Script Extracts and Examples (PowerCLI): Difference between revisions

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m (→‎Daily ESX Up/Down Check: Added link to Store_Password_Securely)
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=== Daily ESX Up/Down Check ===
=== Daily ESX Up/Down Check ===
Simple script that runs every morning just before I start work to provide a basic sanity check email to glance through over the first tea of the day.
Simple script that runs every morning just before I start work to provide a basic sanity check email to glance through over the first tea of the day.
See the following page for details on how to [[Power_Shell#Store_Password_Securely Store Password Securely]] (as I have done, loaded though the files specified by <code>$UserFile</code> and <code>$PassFile</code> in the script below).


<source lang="Powershell" enclose="div">
<source lang="Powershell" enclose="div">
Line 868: Line 870:
$EmailRecipients = "person1@domain.com,person2@domain.com"
$EmailRecipients = "person1@domain.com,person2@domain.com"
$EmailSender = "VI-Mgmt@domain.com"
$EmailSender = "VI-Mgmt@domain.com"
$UserFile = "User.fil"
$PassFile = "Pass.fil"


$smtp = New-Object Net.Mail.SmtpClient -arg "smtp-server.domain.com"
$smtp = New-Object Net.Mail.SmtpClient -arg "smtp-server.domain.com"
Line 883: Line 888:
}
}


$pass = Get-Content "Cred.fil" | ConvertTo-SecureString  
$pass = Get-Content $PassFile -errorAction Stop | ConvertTo-SecureString  
$cred = New-Object System.Management.Automation.PsCredential("MPADGLOBAL\simonstrutt",$pass)
$user = Get-Content $UserFile -errorAction Stop
$cred = New-Object System.Management.Automation.PsCredential($user, $pass)


foreach ($vc in $ToCheck) {
foreach ($vc in $ToCheck) {

Revision as of 14:25, 16 January 2012

Looking for examples of how to launch from command line or scheduler - see Getting_Started_(PowerCLI) > Scheduling

Virtual Machine

VM's with Host and Cluster List

$vms = Get-VM | sort -property Name
foreach ($vm in $vms)
{
     $vm | Get-Cluster | Select-Object @{Name="VM"; Expression={$vm.name}},@{Name="Current Host"; Expression={$vm.host}},Name
}

VM's Inventory CSV

$start = Get-Date

# Create table for output
# Name	DC	OS	UUID	IP	Cluster		ESX's

$table = New-Object system.Data.DataTable "Results"

$col1 = New-Object system.Data.DataColumn Name,([string])
$col2 = New-Object system.Data.DataColumn DC,([string])
$col3 = New-Object system.Data.DataColumn OS,([string])
$col4 = New-Object system.Data.DataColumn UUID,([string])
$col5 = New-Object system.Data.DataColumn MgmtIP,([string])
$col6 = New-Object system.Data.DataColumn Cluster,([string])
#$col7 = New-Object system.Data.DataColumn ESXs,([string])

$table.columns.add($col1)
$table.columns.add($col2)
$table.columns.add($col3)
$table.columns.add($col4)
$table.columns.add($col5)
$table.columns.add($col6)
#$table.columns.add($col7)

$duration = (New-TimeSpan $start (Get-Date)).TotalSeconds
"Created table after $duration secs"

# Get VMs object
$vms = Get-VM | Sort -property Name

$duration = (New-TimeSpan $start (Get-Date)).TotalSeconds
"Got object list of VM's after $duration secs"

foreach ($vm in $vms)
{
	$row = $table.NewRow()
	
	$row.Name = (Get-VM -Name $vm).Name
	$row.DC = (Get-Datacenter -VM $vm).Name
	$row.OS = (Get-VMGuest -VM $vm).OSFullName
	$row.UUID = %{(Get-View $vm.Id).config.uuid}
	$row.MgmtIP =  [string]::join(" ", ((Get-VMGuest -VM $vm).IPAddress))			# Need to join potential list of IP's
	$row.Cluster = (Get-Cluster -VM $vm).Name
	
	$table.Rows.Add($row)
	"Added row for $vm"
}

$duration = (New-TimeSpan $start (Get-Date)).TotalSeconds
"Populated table after $duration secs"

$table | Format-Table
$table | Export-Csv -path result.csv

VM's with Snapshots Running

Be aware that there's a bug in the way Get-Snapshot handles VM's in VI4, in that for the snapshot size it tends to report the maximum size a snapshot file could become, not the actual size that it is. As a result there is a workaround to found here - http://blogs.vmware.com/vipowershell/2010/09/snapshot-size.html. I've found that this reports smaller sizes for VI3 snapshots as well (which match the actual disk usage in the few occasions I've bothered to check). 

$OutputFile = "VM-Snapshot.csv"

function Log ($text) {
    [int]$duration = (New-TimeSpan $start (Get-Date)).TotalSeconds
    Write-Host "$duration secs | $text"
}

function Log-NoNewLine ($text) {
    [int]$duration = (New-TimeSpan $start (Get-Date)).TotalSeconds
    Write-Host "$duration secs | $text" -nonewline
}

$start = Get-Date

$table = New-Object system.Data.DataTable "Results"
$table.columns.add((New-Object system.Data.DataColumn Name,([string])))
$table.columns.add((New-Object system.Data.DataColumn Folder,([string])))
$table.columns.add((New-Object system.Data.DataColumn Snap,([string])))
$table.columns.add((New-Object system.Data.DataColumn Created,([datetime])))
$table.columns.add((New-Object system.Data.DataColumn Size_MB,([single])))
$table.columns.add((New-Object system.Data.DataColumn PowerState,([string])))

Log("Getting list of VMs to check...")
$VMs = Get-VM | Where {$_.PowerState -eq "PoweredOn"} | Sort -Property Name
Log ("Got list of " + ($VMs.Count) + " VMs to check")

$VMno = 0
$VMtot = $VMs.Count

foreach ($vm in $VMs) {
    $VMno = $VMno + 1
    Log-NoNewLine "[$VMno/$VMtot] $vm - "
    
    $Snaps = Get-Snapshot -VM $vm
    if ($Snaps) {
        foreach ($snap in $snaps) {
            $row = $table.NewRow()
            $row.Name = $vm.Name 
            $row.Folder = Get-Folder -Id $vm.FolderId
            $row.Snap = $snap.Name
            $row.Created = $snap.Created
            $row.Size_MB = $snap.SizeMB
            $row.PowerState = $snap.PowerState
            Write-Host $row.Snap "| Created" $row.Created "| Size" $row.Size_MB "MB | " $row.PowerState
        }
    } else {
        Write-Host "No snapshot"
    }
}

if ($table.rows.Count) {
    Log "Completed, writing out table..."
     
    $table | Format-Table
    $table | Export-Csv -path $OutputFile
    
    #Send via email
    $smtp = New-Object Net.Mail.SmtpClient -arg "smtpserver"
    $msg = New-Object Net.Mail.MailMessage
    $attach = New-Object Net.Mail.Attachment($OutputFile)
    
    $msg.From = "from"
    $msg.To.Add = "to"
    $msg.Subject = "Snapshots found running!!"
    $msg.Body = "$table.rows.Count snapshots found to be running, see attachment for further info"
    
    $smtp.Send($msg)
    $attach.Dispose()
}

Log "Completed!"

To implement the Get-Snapshot size bug, download the workaround file from the link above. I've placed it in a sub-folder called lib, hence I've included it into my main script by using... 

. .\lib\getsnapshotsize-1.ps1

...then I've just replaced Get-Snapshot with CalculateVMSnapshotsSizeMB

VM's Effective CPU Shares

Calculates the effective relative CPU shares of VM's contained within resource pools. Can only handle resource pool depth of 1. 

function Log ($text) {
    [int]$duration = (New-TimeSpan $start (Get-Date)).TotalSeconds
    Write-Host "$duration secs | $text"
}
$start = Get-Date

Log "Initialising output tables..."

$tSummary = New-Object system.Data.DataTable "Summary Results"
$tSummary.columns.add((New-Object system.Data.DataColumn Name,([string])))
$tSummary.columns.add((New-Object system.Data.DataColumn CPU_Shares,([int])))
$tSummary.columns.add((New-Object system.Data.DataColumn VMs,([int])))
$tSummary.columns.add((New-Object system.Data.DataColumn Weighted,([single])))

$tDetail = New-Object system.Data.DataTable "Detailed Results"
$tDetail.columns.add((New-Object system.Data.DataColumn Res_Pool,([string])))
$tDetail.columns.add((New-Object system.Data.DataColumn VM,([string])))
$tDetail.columns.add((New-Object system.Data.DataColumn Res_CPU_Shares,([int])))
$tDetail.columns.add((New-Object system.Data.DataColumn VM_CPU_Shares,([int])))
$tDetail.columns.add((New-Object system.Data.DataColumn Eff_VM_Shares,([single])))

Log "Getting resource pools..."
$ResPools = Get-ResourcePool

ForEach ($ResPool in $ResPools) {
    $VMs = Get-VM -Location $ResPool -NoRecursion | Where {$_.PowerState -eq "PoweredOn"}
    If (!$VMs) {         #Skip any resource pools with no VM's
        Log ("Skipping " + $ResPool.Name + " (no VMs)")
        Continue
    }
    $rSummary = $tSummary.NewRow()
    
    Log ("Analysing " + $ResPool.Name + "...")
    $rSummary.Name = $ResPool.Name
    $rSummary.CPU_Shares = $ResPool.NumCpuShares
    
    If (!$VMs.Count) {   # If only 1 VM in ResPool we don't get a normal array returned (so !VMs.Count is NULL)
        $rSummary.VMs = 1
    } else {
        $rSummary.VMs = $VMs.Count
    }
    $rSummary.Weighted = $rSummary.CPU_Shares / $rSummary.VMs
    $tSummary.Rows.Add($rSummary)
    
    # Get each VM's shares
    $totShares = 0
    $VMshares = @{}
    ForEach ($vm in $VMs) {
        $VMShares[$vm.Name] = ($vm | Get-VMResourceConfiguration).NumCpuShares
        $totShares += $VMShares[$vm.Name]
    }
    
    # Work out each VM's proportional CPU share
    ForEach ($vm in $VMs) {
        $rDetail = $tDetail.NewRow()
        
        $rDetail.Res_Pool = $ResPool.Name
        $rDetail.VM = $vm.Name
        $rDetail.Res_CPU_Shares = $ResPool.NumCpuShares
        $rDetail.VM_CPU_Shares = $VMShares[$vm.Name]
        If ($ResPool.Name -eq "Resources") {
            $rDetail.Eff_VM_Shares = $rDetail.VM_CPU_Shares
        } else {
            $rDetail.Eff_VM_Shares = $ResPool.NumCpuShares * ($rDetail.VM_CPU_Shares / $totShares)
        }
        $tDetail.Rows.Add($rDetail)
    } 
}

Log "Done! Writing results out..."
$tSummary | Export-Csv -path ESX-ResPoolInfo-Summary.csv
$tDetail | Export-Csv -path ESX-ResPoolInfo-Detail.csv
$tSummary

Ping All VM's On ESX

Useful sanity check prior to and after network level changes 

$esxToFind = "MyESX*"

$ESX = get-vmhost $esxToFind
if (!$ESX) {
    Write-Host "ERROR: No ESX found with name matching expression $esxToFind" -Background Red -ForegroundColor DarkRed
    Exit
}

# Get list of VM's on $ESX
$VMs = $ESX | get-vm | Where {$_.PowerState -eq "PoweredOn"} | Sort -property Name 
$objPing = New-Object system.Net.NetworkInformation.Ping

Foreach ($VM in $VMs) {
    Write-Host $VM.Name.PadRight(20) -nonewline
    
    # Get guest's primary IP address
    $ip = (Get-VMGuest -VM $vm).IPAddress[0]
    if (!$ip) {
        Write-Host "NULL - Skipping test" -Background DarkYellow -ForegroundColor Yellow
        Continue
    }
    Write-Host $ip.PadRight(17) -nonewline
    if ($ip -eq '0.0.0.0') {
        Write-Host "Skipping" -Background DarkYellow -ForegroundColor Yellow
        Continue
    }
        
    [string]$res = $objPing.Send($ip).Status
    if ($res.CompareTo("Success")) {                    # Returns 1 if $res doesn't match "Success" !!
        Write-Host $res -BackgroundColor DarkRed -ForegroundColor Red
    } else {
        Write-Host $res -BackgroundColor DarkGreen -ForegroundColor Green
    }
}

Enable Change Block Tracking

This script enables CBT for all VM's managed by the vCentre its run on. It runs through all VM’s managed by the VC and determines which can be changed, then run through and changes them.

Based on the work by ICT-Freak found at http://ict-freak.nl/2009/12/14/powercli-enable-changed-block-tracking/ 

$log = "VM-EnableCBT.log"

# =====================================================================================================
# Functions...

function Log ($text) {
    [int]$duration = (New-TimeSpan $start (Get-Date)).TotalSeconds
    Write-Host "$duration secs | $text"
}

Function EnableChangeTracking{
    param($vmObj)
    $vmView = Get-View -VIObject $vmObj
    
    Log ($vmObj.Name + " - Reconfiguring VM for CBT...")
    $vmConfigSpec = New-Object VMware.Vim.VirtualMachineConfigSpec
    $vmConfigSpec.ChangeTrackingEnabled = $true
    $task = $vmView.ReconfigVM_Task($vmConfigSpec)
    Wait-Task -Task (Get-VIObjectByVIView -MORef $task) -ErrorAction "SilentlyContinue"
    Sleep 1

    Log ($vmObj.Name + " - Creating temp snapshot...")
    $snap = New-Snapshot -Name "Temp snapshot to apply CBT" -VM $vm
    
    Sleep 1

    Log ($vmObj.Name + " - Removing temp snapshot...")
    Remove-Snapshot -Snapshot $snap -Confirm:$false
    Log ($vmObj.Name + " - Completed")
}

# ======================================================================================================
# The actual script...

$start = Get-Date

Start-Transcript -Path $log
Log "Started script run at $start"

$VMsToDo = @()

$VMs = Get-VM | Sort -Property Name
foreach ($vm in $VMs) {
    if (!(($vm.ExtensionData.Config.Extraconfig |?{$_.Key -eq "ctkEnabled"}).Value) -and $vm.Version.ToString() -eq "v7") {
        $VMsToDo += $vm
        Log ($vm.Name + " - Added to ToDo list")
    } else {
        if ((($vm.ExtensionData.Config.Extraconfig |?{$_.Key -eq "ctkEnabled"}).Value)) {
            Log ($vm.Name + " - CBT already enabled")
        } elseif ($vm.Version.ToString() -ne "v7") {
            Log ($vm.Name + " - Not v7, VM hardware version needs to be upgraded !!!")
        } 
    }
            
}
Log ("Found " + $VMsToDo.Count + " to enable")

foreach ($vm in $VMsToDo) {
    EnableChangeTracking $vm
}

Log("All completed")
Stop-Transcript

VM's Recently Created

I run the following script twice a week (via a scheduled task), to generate a report of VM's recently created, as a catch-all reminder to check VM backup's, monitoring, etc etc have been set-up as required. The number of days history it searches through can either be altered in the script (the $days parameter), or passed as a command line parameter when run as a scheduled task.

The script borrows heavily from http://get-admin.com/blog/how-to/vmware/powercli-get-every-vm-added-to-vcenter-in-the-last-30-days/, which is where the real genius of the script comes from.

I use a username and password file for credentials, see Store Password Securely for more info, plus a CSV with a list of vCentres in (one column with a heading of "vc"). 

$UserFile = "User.fil"
$PassFile = "Pass.fil"                           # Encrypted file to store password in
$VC_List = "ESX-Check.csv"
$EmailTo = "you@domain.com"
$days = 2
$NotFoundText = "Not found/gone?"

# Library funcs
function Log ($text) {
    [int]$duration = (New-TimeSpan $start (Get-Date)).TotalSeconds
    Write-Host "$duration secs | $text"
}

$start = Get-Date
Start-Transcript -Path VMs-Created.log -Append
Log("Started script at $start hrs")

if (!$args[0]) {
    Log "No argument passed, using default of VM's created in last $days days."
} else {
    $days = $args[0]
    Log "Checking for VM's created in last $days days."
}

# Load VMware PS Snapin
Log("Loading VMware PowerShell Snapin...")
Add-PsSnapin *VMware*


# Functions ===================================================================================================================================

function Get-Container ($objVM) {
    # Returns either the containing vApp or Folder

    if ($objVM.VApp) {
        Return $objVM.VApp.Name
    } else {
        Return $objVM.Folder.Name
    }
}
    

function Get-VMsCreated ([int]$LastDays) {
    # Modified from http://get-admin.com/blog/how-to/vmware/powercli-get-every-vm-added-to-vcenter-in-the-last-30-days/

    $EventFilterSpecByTime = New-Object VMware.Vim.EventFilterSpecByTime
    if ($LastDays) {
        $EventFilterSpecByTime.BeginTime = (get-date).AddDays(-$($LastDays))
        $EventFilterSpecByTime.EndTime = get-date
    }
    $EventFilterSpec = New-Object VMware.Vim.EventFilterSpec
    $EventFilterSpec.Time = $EventFilterSpecByTime
    $EventFilterSpec.DisableFullMessage = $False
    $EventFilterSpec.Type = "VmCreatedEvent","VmDeployedEvent","VmClonedEvent","VmDiscoveredEvent","VmRegisteredEvent"
    $EventManager = Get-View EventManager
    $NewVmTasks = $EventManager.QueryEvents($EventFilterSpec)
    
    $VMs = @()
 
    Foreach ($Task in $NewVmTasks)
    {
        # If VM was deployed from a template/cloned from VM then record which template/VM.
        If ($Task.Template -and ($Task.SrcTemplate.Vm)) {
             $srcMachine = (Get-View $Task.SrcTemplate.Vm -Property name).Name
        } elseif ($Task.SourceVm.Vm) {
            $srcVM = Get-VM -Id $Task.SourceVm.Vm
            $srcMachine = (Get-Container $srcVM) + "\" + $srcVM.Name
        } Else {
            $srcMachine = $null
        }
        
        # Create output
        $vmCreated = "" | Select VC_Name, VM_Path, VM_Name, Created, ByUser, Method, Source
        $vmCreated.VC_Name = $vc.vc
        try {
            $vmCreated.VM_Path = Get-Container (Get-VM -Id $Task.Vm.Vm -errorAction stop)
            if ($vmCreated.VM_Path -eq "vm") {
                $vmCreated.VM_Path = "(root)"
            }
            
        } catch {
            Log("VM not found " + $Task.Vm.name)
            $vmCreated.VM_Path = $NotFoundText
        }
            
        #$vmCreated.VM_Path = Get-Container (Get-VM -Id $Task.Vm.Vm)
        $vmCreated.VM_Name = $Task.Vm.name
        $vmCreated.Created = $Task.CreatedTime
        $vmCreated.ByUser = [regex]::Replace($Task.UserName, "YourDomain\\", "")
        $vmCreated.Method = $Task.gettype().name     # VmDeployedEvent - from template, VmClonedEvent - from existing VM, VmCreatedEvent - from scratch/Convertor import
        $vmCreated.Source = $srcMachine
        $VMs += $vmCreated
    } 
    
    $VMs
}

# Business =================================================================================================================================

# Load list of VC's
try {
    $VCs = Import-CSV $VC_List
} catch {
    Log("ERROR: Failed to load list of vC's")
    Exit
}

# Load password credential from encrypted file
$pass = Get-Content $PassFile | ConvertTo-SecureString
$user = Get-Content $UserFile
$cred = New-Object System.Management.Automation.PsCredential($user, $pass)

# Disconnect any existing VI Server sessions (otherwise you can end up with duplicate VM's)
if ($DefaultVIServers.Count) {
    Log("Disconnect existing vCentre server connections...")
    Disconnect-VIServer -Server * -Force -Confirm:$false
}

$VMsCreated = @()

# Get VM's from each VC
foreach ($vc in $VCs) {
    #if ($vc.vc -eq "lab-manager") {
    #    Log("Skipping " + $vc.vc)
    #    Continue
    #}
    Log("Checking for VMs on " + $vc.vc)
    try {
        $VCconn = Connect-VIServer -Server $vc.vc -Credential $cred -errorAction stop
    } catch [VMware.VimAutomation.ViCore.Types.V1.ErrorHandling.InvalidLogin] {
        Log("ERROR: Unable to connect to " + $vc.vc + ", invalid logon error !!")
        Log("Abandoning further script processing in order to prevent potential account lockout.")
        Exit
    } catch {
        Log("ERROR: Unable to connect to " + $vc.vc)
        Log($_)
        Continue
    }
    
    $VMsCreated += Get-VMsCreated $days
    Log("VMs created count now " + $VMsCreated.Length)
    Disconnect-VIServer -Server $VCconn -Confirm:$false
}

$VMsCreated

# Create HTML for email
[string]$msgHTML = "<!-- Genenerated by $ScriptName at " + (Get-Date).ToString() + " hrs -->`n"
$msgHTML += "<html xmlns='http://www.w3.org/TR/REC-html40'>`n`n<head>`n<meta http-equiv=Content-Type content='text/html; charset=uk'`n>"
$msgHTML += "<meta name=Generator content='VMs Recently Created script'>`n<meta name=Author content='Simon Strutt'>`n</head>`n`n"
$msgHTML += "<body style='font-family: arial; font-size: 12;'>`n"
$msgHTML += "The following VM's have been created in the last $days days (ie since " + ((Get-Date).AddDays(-$days)).ToString("HH:mm \h\r\s\, ddd dd-MMM-yyyy") + "),"
$msgHTML += " and backup jobs may need to be updated as a result.<br><br>`n"
if (!$VMsCreated.Length) {
    $msgHTML += "None !!"
} else {
    $msgHTML += "<table border=1 style='border-width: 1px; border-spacing: 1; border-color: black; background-color: #faf0e6; font-family: arial; font-size: 11;'>`n"
    $msgHTML += "<tr style='border-width: 2px; border-color: black; background-color: #fcf7f8;'><th>vCentre<th title='vApp or parent folder'>Container<th>VM<th>Created<th>By User<th>Method<th>Source`n"
    foreach ($vm in $VMsCreated) {
        if ($vm.Created) {
            $msgHTML += "<tr><td>" + $vm.VC_Name
            if ($vm.VM_Path -eq $NotFoundText) {
                $msgHTML += "<td>" + $vm.VM_Path + "<td>" + $vm.VM_Name
            } else {
                $msgHTML += "<td style='font-weight: bold;'>" + $vm.VM_Path + "<td style='font-weight: bold;'>" + $vm.VM_Name
            }
            $msgHTML += "<td style='text-align: right;'>" + ($vm.Created).ToString("HH:mm ddd dd-MM-yy") + "<td>" + $vm.ByUser + "<td>" + $vm.Method + "<td>" + $vm.Source + "`n"
        }
    }
    $msgHTML += "</table><br><br>`n"
    $msgHTML += "Generated by script: " + ($MyInvocation.MyCommand.Name) + "<br>`n"
    $msgHTML += "Sent from machine  : $env:computername</body></html>"
}

# Send email
$smtp = New-Object Net.Mail.SmtpClient -arg "mailrelay.uk.michaelpage.local"
$msg = New-Object Net.Mail.MailMessage
        
$msg.From = "VI-Mgmt@sandfordit.com"
$msg.To.Add($EmailTo)
$msg.Subject = "VMs created in last $days days"
$msg.IsBodyHTML = $true
$msg.Body = $msgHTML
  
$smtp.Send($msg)

Stop-transcript

ESX

ESX NIC Info

Provides a list of all vmnic speeds for ESX's connected to vCentre 

$ESXs = Get-VMHost

Foreach ($esx in $ESXs) {
    Write-Host $esx.Name $esx.State
    $pNICs = (Get-VMHost -Name "MyESX*" | Get-View).Config.Network.Pnic

    $result = @{}
    Foreach ($pNIC in $pNICs) {
        $result[$pNIC.Device] = $pNIC.LinkSpeed.SpeedMB
    }
    $result = $result.GetEnumerator() | Sort-Object -Property Name
    $result
    Write-Host
}

ESX Log Tail

Note that the below only seems to work for ESX3.5, I gave up trying to get it work for both v3 and v4, its a lot easier to just enable ESXi Tech Support Mode and tail the log

Pointless for ESX (you can just use tail from the Service Console on the appropriate log), but a godsend it you're using ESXi (and have got used to tailing ESX logs). 

$PollInterval = 1000     # msec (default - can be overrided by user)

#Get ESX to poll
$ESXs = Get-VMHost | Sort-Object -Property Name
Write-Host "`nWhich ESX's log do you want to tail?"
$num = 0
foreach ($esx in $ESXs) {
    Write-Host "[$num]" $ESXs[$num].Name
    $num++
}
$num = 0
$num = Read-Host "? [$num] "
$ESX = Get-VMHost $ESXs[$num]
Write-Host " "

# Get Log keys to look at
$keys = Get-LogType -VMHost $ESX
Write-Host "`nWhich log do you want to tail?"
$num = 0
foreach ($key in $keys) {
    Write-Host "[$num]" $keys[$num].Key
    $num++
}
$num = 0
$num = Read-Host "? [$num] "
$logKey = $keys[$num].Key

# Set polling interval
$PollInterval = Read-Host "`nWhat polling interval do you want to use (msec)? [$PollInterval]"

Write-Host "`nStarting log tail (press Ctrl+C to escape)...`n"

# First pass of log
$ESXLog = Get-Log $LogKey -VMHost $ESX

#Display last $lines
$LineNo = $ESXLog.LastLineNum - $lines
While ($LineNo -le $ESXLog.LastLineNum) {
    Write-Host $ESXlog.Entries[$LineNo]
    $LineNo++
}

#Polling loop
While (1) {
    Start-Sleep -Milliseconds $PollInterval
    try {
        $ESXLog = Get-Log $logKey -VMHost $ESX -StartLineNum $LineNo
    } catch {
        if (Select-String -InputObject $_ -pattern "The 0 argument is less than the minimum allowed range of 1" -Quiet) {
            Write-Host "ESX log is rolling over..."
            $ESXLog = Get-Log $logKey -VMHost $ESX
        } else {
            Write-Host "UNEXPECTED ERROR: $_"
            Exit
        }
    }
    $ESXlog.Entries
    $LineNo = $ESXLog.LastLineNum
}

ESX Discovered Networks Hint

This function provides the discovered network hints for the network interface its passed. Bear in mind that its just a hint, for an ESX to be aware of a particular vLAN it needs to see traffic. If there's no traffic it will show nothing.

Adapted from the following article on the VMware site blog http://blogs.vmware.com/vipowershell/2010/02/how-to-find-out-what-vlans-your-esx-hosts-can-really-see.html 

function Get-ObservedIPRange {
	param(
		[Parameter(Mandatory=$true,ValueFromPipeline=$true,HelpMessage="Physical NIC from Get-VMHostNetworkAdapter")]
		[VMware.VimAutomation.Client20.Host.NIC.PhysicalNicImpl]
		$Nic
	)

	process {
		$hostView = Get-VMHost -Id $Nic.VMHostId | Get-View -Property ConfigManager
		$ns = Get-View $hostView.ConfigManager.NetworkSystem
		$hints = $ns.QueryNetworkHint($Nic.Name)

		foreach ($hint in $hints) {
			foreach ($subnet in $hint.subnet) {
				$observed = New-Object -TypeName PSObject
				$observed | Add-Member -MemberType NoteProperty -Name Device -Value $Nic.Name
				$observed | Add-Member -MemberType NoteProperty -Name VlanId -Value $subnet.VlanId
				$observed | Add-Member -MemberType NoteProperty -Name IPSubnet -Value $subnet.IPSubnet
				$observed | Add-Member -MemberType NoteProperty -Name BitRatePerSec -Value $nic.BitRatePerSec
				Write-Output $observed
			}
		}
	}
}

# Example use:


$result = Get-VMHost MyESX* | Get-VMHostNetworkAdapter | Where {$_.Name -Match ".*vmnic*"} | Get-ObservedIPRange | Sort-Object -Property Device, VlanId
$result | Export-Csv -path ESX-vLANs-Observed.csv

ESX CDP Info

Adapted from posted by LucD on VMware forum http://communities.vmware.com/message/977487 

Get-VMHost | Sort -Property Name | %{Get-View $_.ID} | %{$esxname = $_.Name; Get-View $_.ConfigManager.NetworkSystem} | %{
  foreach($physnic in $_.NetworkInfo.Pnic){
    $pnicInfo = $_.QueryNetworkHint($physnic.Device)
    foreach($hint in $pnicInfo){
      Write-Host $esxname $physnic.Device $hint.connectedSwitchPort.DevId $hint.connectedSwitchPort.PortId
    }
  }
}

ESX BIOS, NIC and HBA Driver Versions

Getting BIOS, NIC and HBA driver versions is dependant on what's reported to the ESX by the hardware vendor's CIM provider. This script was written using various HP servers and may well only work for them. 

# ===============================================================
# ESX Inventory Getter
# ===============================================================
# Simon Strutt        November 2010
# ===============================================================
#
# Version 1
# - Initial Creation
#
# Version 2 - Dec 2010
# - Added BiosVer, CpuCores, CpuModel, HbaModel, NicModel
# - Bugfix: Corrected VC connection handling
# - Removed dependancy on obseleted properties (from upgrade to PowerCLI v4.1.1)
#
# Limitations
# - Tested on HP DL380 (G7), BL465 (G7), BL495 (G6), BL685 (G5)
# - Supports 1 distinct HBA model, 2 distinct NIC models
#
# ================================================================

$start = Get-Date
$OutputFile = "ESXs.csv"
$VC_List = "ESX-Check.csv"
$UserFile = "User.fil"
$PassFile = "Pass.fil"                           # Encrypted file to store password in
$Results = @()

# Include library files
. .\lib\Standard.ps1

Start-Transcript -Path ESX-Inventory.log
Log "Started script run at $start"

# Function-U-like ===================================================================================

Function Get-NicDriverVersion ($view, $driver) {
    # Gets the CIM provided driver version (tallies up driver name with CIM software component)
    $result = ($view.Runtime.HealthSystemRuntime.SystemHealthInfo.NumericSensorInfo | Where {$_.Name -like $driver + " driver*"} | Get-Unique).Name
    $result = ([regex]::Matches($result, "(\b\d)(.*)(?=\s)"))[0].Value         # HP regex to extract "2.102.440.0" for example
    $result
}

# =================================================================================================== 

# Load list of VC's
try {
    $VCs = Import-CSV $VC_List
} catch {
    Log "ERROR: Failed to load list of vC's"
    Exit
}

# Load password credential from encrypted file
$pass = Get-Content $PassFile | ConvertTo-SecureString
$user = Get-Content $UserFile
$cred = New-Object System.Management.Automation.PsCredential($user, $pass)

foreach ($vc in $VCs) {
    
    # Connect to VC
    try {
        Log("Connecting to " + $vc.vc)
        $VCconn = Connect-VIServer -Server $vc.vc -Credential $cred -errorAction "Stop"
    } catch [VMware.VimAutomation.ViCore.Types.V1.ErrorHandling.InvalidLogin] {
        Log("Unable to connect to vCentre, invalid logon error !!")
        Log("Abandoning further script processing in order to prevent potential account lockout.")
        Break
    } catch {
        Log("Unable to connect to vCentre - " + $_)
        Continue
    }
    
    # Get ESX objects
    Log("Getting list of ESXs to check on " + ($vc.vc) + "...")
    $ESXs = Get-VMHost -Server $vc.vc | Sort -property Name
    Log("Got list of " + ($ESXs.Count) + " ESXs to check") 
    
    ForEach ($ESX in $ESXs) {
        $row = "" | Select VC, Cluster, Name, IP, Version, Make, Model, BiosVer, CpuCores, CpuModel, HbaModel, HbaDriver, HbaDriverVer, Nic1Model, Nic1Driver, Nic1DriverVer, Nic2Model, Nic2Driver, Nic2DriverVer
        Log($ESX.Name)
        
        # Store objects which get re-used for efficiency
        $ESXview = Get-View -VIObject $ESX
        $VMHostNetworkAdapter = Get-VMHostNetworkAdapter -VMHost $esx 
        
        # Get the basics
        $row.VC = $vc.vc
        $row.Cluster = $ESX.Parent
        $row.Name = $ESX.Name.Split(".")[0]
        $row.IP =  ($VMHostNetworkAdapter | Where {$_.ManagementTrafficEnabled -eq "True" -or $_.DeviceName -like "vswif*" -or $_.Name -eq "vmk0"}).IP
        $row.Version = $ESX.Version + " (" + $ESX.Build + ")"
        $row.Make = $ESX.Manufacturer
        $row.Model = $ESX.Model
        
        # Now onto the more ESX version / hardware specfic stuff (new versions of hardware will require further work below)
        
        # BIOS
        if ($ESXView.Hardware.BiosInfo) {     # Works on some systems 
            $row.BiosVer = $ESXview.Hardware.BiosInfo.BiosVersion + " " + $ESXview.Hardware.BiosInfo.ReleaseDate.ToString("yyyy-MM-dd")   # Need date for HP servers as they use same version no for diff versions!
        } else {
            $row.BiosVer = ($ESXview.Runtime.HealthSystemRuntime.SystemHealthInfo.NumericSensorInfo | Where {$_.Name -like "*BIOS*"}).Name
            $row.BiosVer = ([regex]::Matches($row.BiosVer, "[A-Z]\d{2} 20\d{2}-\d{2}-\d{2}"))[0].Value           # HP regex to extract "A19 2010-09-30" for example
        }
        
        # CPU info
        $row.CpuCores = $ESXview.Hardware.CpuInfo.NumCpuCores.ToString() + " (" + $ESXview.Hardware.CpuPkg.count + "x" + $ESXview.Hardware.CpuPkg[0].ThreadId.count + ")"
        $row.CpuModel = $ESX.ExtensionData.Summary.Hardware.CpuModel
        
        # HBA info (script assumes only one HBA model in use)
        $row.HbaModel = ($ESX.ExtensionData.Config.StorageDevice.HostBusAdapter | Where {$_.Key -like "*FibreChannel*"})[0].Model
        $row.HbaDriver = ($ESX.ExtensionData.Config.StorageDevice.HostBusAdapter | Where {$_.Key -like "*FibreChannel*"})[0].Driver     # Includes version for ESX3
        $row.HbaDriverVer = ($ESXview.Runtime.HealthSystemRuntime.SystemHealthInfo.NumericSensorInfo | Where {$_.Name -like "*" + $row.HbaDriver + "*"}).Name
        $row.HbaDriverVer = ([regex]::Matches($row.HbaDriverVer, "(\b\d)(.*?)(?=\s)"))[0].Value
        
        # NIC info (script only supports two distinct NIC types)
        $nics = $ESXview.Hardware.PciDevice | Where {$_.ClassId -eq 512} | Select VendorName, DeviceName, Id | Sort-Object -Property DeviceName -Unique
        if ($nics.count) {
            $row.Nic1Model = $nics[0].VendorName + " " + $nics[0].Devicename
            $row.Nic2Model = $nics[1].VendorName + " " + $nics[1].Devicename
            
            # Use PCI ID to match up NIC hardware type with driver name
            $row.Nic1Driver = ($VMHostNetworkAdapter | Where {$_.ExtensionData.Pci -eq $nics[0].Id}).ExtensionData.Driver
            $row.Nic2Driver = ($VMHostNetworkAdapter | Where {$_.ExtensionData.Pci -eq $nics[1].Id}).ExtensionData.Driver
            
            $row.Nic1DriverVer = Get-NicDriverVersion $ESXview $row.Nic1Driver
            $row.Nic2DriverVer = Get-NicDriverVersion $ESXview $row.Nic2Driver
         } else {
            # Annoyingly, $nics is not an array if there's only one NIC type, hence seperate handling
            $row.Nic1Model = $nics.VendorName + " " + $nics.Devicename
            $row.Nic1Driver = ($VMHostNetworkAdapter | Where {$_.ExtensionData.Pci -eq $nics.Id}).ExtensionData.Driver
            $row.Nic1DriverVer = Get-NicDriverVersion $ESXview $row.Nic1Driver
        }
        
        $Results = $Results + $row
    }
    Disconnect-VIServer -Server $VCconn -Confirm:$false
}
$Results | Format-Table *
Log("Writing results to $OutputFile...")
$Results | Export-Csv -path $OutputFile -NoTypeInformation

Log("All completed")
Stop-Transcript

Daily ESX Up/Down Check

Simple script that runs every morning just before I start work to provide a basic sanity check email to glance through over the first tea of the day.

See the following page for details on how to Power_Shell#Store_Password_Securely Store Password Securely (as I have done, loaded though the files specified by $UserFile and $PassFile in the script below). 

#############################################################################################
#
#  ESX Checker
#
#############################################################################################
#
# By Simon Strutt
#
# Version 1 - Aug 10
# - Initial creation
#
# Version 2 - Oct 10
# - Fixed VIServer handling (was never good but stuffed by upgrade to PowerCLI 4.1)
# - Improved email in case of vCentre connection failure
#
# Version 2.1 - Nov 10
# - Minor text changes
#
# Version 2.2 - Nov 10
# - Added InvalidLogon catch to vCentre logon to prevent a/c lockout
#
# Version 3 - Dec 10
# - Truncated displayed ESX hostname (stripped domain)
# - Added "since <datetime>" info to ESX's that aren't in a good state
# - Bugfix: Incorrect email config used when VC list config file load failed
#
# Version 3.1 Jan 11
# - Workaround: Powershell/MS DateTime object returns incorrect (US) date format
#
# Version 3.2 Jan 11
# - Bugfix: Extraneous " hrs" on end of v3.1 fixed datetimes 
#
#############################################################################################

$DateFormat = "%R hrs, %a %d %b %Y"

$EmailBody = "Results of ESX status check as of " + (get-date -uFormat "$DateFormat.`n`n")
$EmailRecipients = "person1@domain.com,person2@domain.com"
$EmailSender = "VI-Mgmt@domain.com"

$UserFile = "User.fil"
$PassFile = "Pass.fil"

$smtp = New-Object Net.Mail.SmtpClient -arg "smtp-server.domain.com"
$VCAlertToSend = 0
$ESXAlertToSend = 0
$start = Get-Date

try {
    $ToCheck = Import-CSV "ESX-Check.csv"
} catch {
    $EmailBody = "ERROR: Failed to load config file, no checks have been done.`n"
    $EmailBody += $_
    $smtp.Send($EmailSender, $EmailRecipients, "ESX-Check: Check failed", $EmailBody)
    Exit
}

$pass = Get-Content $PassFile -errorAction Stop | ConvertTo-SecureString 
$user = Get-Content $UserFile -errorAction Stop
$cred = New-Object System.Management.Automation.PsCredential($user, $pass)

foreach ($vc in $ToCheck) {
    Write-Host "Checking ESXs on" $vc.vc
    $VChasBadESX = 0
    try {
        $VCconn = Connect-VIServer -Server $vc.vc -Credential $cred -NotDefault -errorAction "Stop"
    } catch [VMware.VimAutomation.ViCore.Types.V1.ErrorHandling.InvalidLogin] {
        $EmailBody += ($vc.vc).ToUpper() + "`t" + "Unable to connect to vCentre, invalid logon error !!`n`n"
        $EmailBody += "Abandoning further script processing in order to prevent potential account lockout.`n"
        $VCAlertToSend = 1
        Break
    } catch {
        $EmailBody += ($vc.vc).ToUpper() + "`t" + "Unable to connect to vCentre, ESX's not checked !!`n"
        $VCAlertToSend = 1
        Continue
    }
    $ESXs = Get-VMHost -Server $vc.vc | Where {$_.State -ne "Connected"} | Sort -property Name
    if ($ESXs) {
        foreach ($ESX in $ESXs) {
            # Attempt to work out when ESX went into its bad state
            Switch ($ESX.State) {
                NotResponding {
                    $events = Get-VIEvent -Entity $ESX -Types Error | Where {$_.fullFormattedMessage -like "*is not responding*"}
                }
                Maintenance {
                    $events = Get-VIEvent -Entity $ESX -MaxSamples 1000 | Where {$_.fullFormattedMessage -like "*has entered maintenance mode*"}
                }
                Disconnected {
                    $events = Get-VIEvent -Entity $ESX -MaxSamples 1000 | Where {$_.fullFormattedMessage -like "*Disconnected from*"}
                }
                Default {
                    $events = 0
                }
            }
            If ($events) {
                $SinceString = " since " + (Get-Date $events[0].CreatedTime -uFormat $DateFormat)
            } else {
                $SinceString = ""
            }
                    
            $EmailBody += $vc.vc + "`t" + ($ESX.Name.Split(".")[0]).ToUpper() + "`t" + $ESX.State + $SinceString + "`n"
            $ESXAlertToSend = 1
            $VChasBadESX = 1
        }
    }
    if (!$VChasBadESX) {
        $EmailBody += $vc.vc + "`t" + "All good`n"
    }
    Disconnect-VIServer -Server $VCconn -Confirm:$false
}

$end = Get-Date

$EmailBody += "`n`n`nCheck started      : " + (Get-Date $start -uFormat $DateFormat) + "`n"
$EmailBody += "Check finished     : " + (Get-Date $end -uFormat $DateFormat) + "`n" 
$EmailBody += "Generated by script: " + ($MyInvocation.MyCommand.Name) + "`n"
$EmailBody += "Sent from machine  : $env:computername"

$EmailBody
Write-Host "Sending email..."
if ($VCAlertToSend) {
    $smtp.Send($EmailSender, $EmailRecipients, "ESX-Check: Unable to connect to some/all vCentres", $EmailBody)
} elseif ($ESXAlertToSend) {
    $smtp.Send($EmailSender, $EmailRecipients, "ESX-Check: Some ESX's are NOT CONNECTED", $EmailBody)
} else {
    $smtp.Send($EmailSender, $EmailRecipients, "ESX-Check: All connected OK", $EmailBody)
}
if (-not $?) {
    Write-Host "SMTP send failed!!"
    Start-Sleep(30000)
}

Storage

VM's with Datastores List

List of Virtual Machines, and their datastores (with usage) 

$datastoreExp = @{N="Datastore"; E={ ($_ | get-datastore | select-object -first 1).Name }}
$diskSizeExp = @{N="Total Disk"; E={ ($_ | get-harddisk | measure-object -property CapacityKB -sum).Sum }}
get-vm | select Name, $datastoreExp, $diskSizeExp | sort -property Datastore,"Total Disk"

VM Storage Usage

Total storage usage (including any snapshots, logs, etc, etc), not just the VMDK files. Adapted from post by Arnim van Lieshout http://www.van-lieshout.com/2009/07/how-big-is-my-vm/ 

function Get-VMDiskUsage($vm2do)
{
    #Initialize variables
    $VMDirs =@()
    $VMSize = 0

    $searchSpec = New-Object VMware.Vim.HostDatastoreBrowserSearchSpec
    $searchSpec.details = New-Object VMware.Vim.FileQueryFlags
    $searchSpec.details.fileSize = $TRUE

    Get-View -VIObject $vm2do | % {
        #Create an array with the vm's directories
        $VMDirs += $_.Config.Files.VmPathName.split("/")[0]
        $VMDirs += $_.Config.Files.SnapshotDirectory.split("/")[0]
        $VMDirs += $_.Config.Files.SuspendDirectory.split("/")[0]
        $VMDirs += $_.Config.Files.LogDirectory.split("/")[0]
        #Add directories of the vm's virtual disk files
        foreach ($disk in $_.Layout.Disk) {
            foreach ($diskfile in $disk.diskfile){
                $VMDirs += $diskfile.split("/")[0]
            }
        }
        #Only take unique array items
        $VMDirs = $VMDirs | Sort | Get-Unique

        foreach ($dir in $VMDirs){
            $ds = Get-Datastore ($dir.split("[")[1]).split("]")[0]
            $dsb = Get-View (($ds | get-view).Browser)
            $taskMoRef  = $dsb.SearchDatastoreSubFolders_Task($dir,$searchSpec)
            $task = Get-View $taskMoRef 

            while($task.Info.State -eq "running" -or $task.Info.State -eq "queued"){$task = Get-View $taskMoRef }
            foreach ($result in $task.Info.Result){
                foreach ($file in $result.File){
                    $VMSize += $file.FileSize
                }
            }
        }
    }

    # VM disk usage in GB
    $VMSize/1048576000
}
Get-VMDiskUsage (Get-VM "MyVM")

ESX Storage Events

Creates a CSV of storage events (eg path up/downs). Useful in order to be analyse storage events, for example if you need to tally up to SAN logs etc. Note the get-VIEvent is limited to 1000 results, which will typically get 1 - 2 days worth depending on your infrastructure. To get a longer history would require multiple calls to get-VIEvent using the -Start and -Finish parameters 

$OutputFile = "ESX-EventsStorage.csv"

$Results = @()
$events = Get-VIEvent -MaxSamples 1000 | Where {$_.EventTypeID -like "esx.*.storage.*"}
foreach ($event in $events) {
    $row = "" | Select Date, Host, EventID, Device, Datastore, Path
    $row.Date = $event.CreatedTime
    $row.Host = $event.Host.Name.Split(".")[0]
    $row.EventID = $event.EventTypeID
    # Allow for Argument Keys being mixed up between "problem" aka fault start and "clear" aka fault end events
    $row.Device = $event.Arguments[0].Value
    if ($row.EventID -like "esx.problem.*") {
        $row.Datastore = $event.Arguments[2].Value
        $row.Path = $event.Arguments[1].Value
    } elseif ($row.EventID -like "esx.clear.*") {
        $row.Datastore = $event.Arguments[1].Value
        $row.Path = $event.Arguments[2].Value
    } else {
        Write-Host "ERROR: Unexpected EventTypeID - " $row.EventID
    }
    $Results = $Results + $row
}
$Results | Format-Table *
$Results | Export-Csv -path $OutputFile -NoTypeInformation

ESX Datastore to LUN Mapping (ESX3)

Its bizarrely difficult to be able to map VMware presented datastore names to the underlying LUN's, despite the fact that its readily available via the VI Client. The following was adapted from the work of Catman found in this forum thread - http://communities.vmware.com/thread/240466#240466. As I expect to maybe want some of the other fields available during the working my notes from working through this are to be found here 

# Thieved and adapted from the good work by catman...
# http://communities.vmware.com/thread/240466#240466

$objESX = Get-VMHost "My_ESX*"

# Get .NET views for host and storage system
$objViewESX = Get-View -id $objESX.id
$objViewESXstorageSys = Get-View -id $objViewESX.ConfigManager.StorageSystem

# Get FC HBAs
$HBAs = $objViewESXstorageSys.StorageDeviceInfo.HostBusAdapter | Where-Object {$_.Key -like "*FibreChannelHba*"}

foreach ($hba in $HBAs) {
    # Enumerate LUNs
    $LUNcount = $objViewESXstorageSys.StorageDeviceInfo.MultiPathInfo.Lun.Length
    
    for ($LUNidx = 0; $LUNidx -lt $LUNcount; $LUNidx++ ) {
        $objScsiLUN = $objViewESXstorageSys.StorageDeviceInfo.MultiPathInfo.Lun[$LUNidx]
        
        # Enumerate paths on LUN
        $PathCount = $objScsiLUN.Path.Length
        
        for ($PathIdx = 0; $PathIdx -lt $PathCount; $PathIdx++) {
            $objSCSIpath = $objViewESXstorageSys.StorageDeviceInfo.MultiPathInfo.Lun[$LUNidx].Path[$PathIdx]
            
            # Only care about one path, active on current HBA
            if (($objSCSIpath.PathState -eq "active") -and ($objSCSIpath.Adapter -eq $hba.Key)) {
                # Now get the disk that we want
                $objSCSIdisk = $objViewESXstorageSys.StorageDeviceInfo.ScsiLun | Where-Object{ ($_.CanonicalName -eq $objScsiLUN.Id) -and ($_.DeviceType -eq "disk") }
                
                # Now get the datastore info for disk
                $MountCount = $objViewESXstorageSys.FileSystemVolumeInfo.MountInfo.Length
                
                for ($MountIdx = 0; $MountIdx -lt $MountCount; $MountIdx++ ) {
                    if ($objViewESXstorageSys.FileSystemVolumeInfo.MountInfo[$MountIdx].Volume.Type -eq "VMFS" ) {
                        $objVolume = $objViewESXstorageSys.FileSystemVolumeInfo.MountInfo[$MountIdx].Volume
                        
                        $ExtentCount = $objVolume.Extent.Length
                        
                        for ($ExtentIdx = 0; $ExtentIdx -lt $ExtentCount; $ExtentIdx++ ) {
                            $objExtent = $objVolume.Extent[$ExtentIdx]
                            
                            # Match extent name to disk name
                            if ($objExtent.DiskName -eq $objSCSIdisk.CanonicalName) {
                                Write-Host($objSCSIdisk.Vendor + " " + $objSCSIdisk.Model + " " + $objSCSIdisk.CanonicalName + "`t" + $objVolume.Name)
                            }
                        }
                    }
                }
            }
        }
    }
}

Gives an output a bit like this... 

HP       HSV200           vmhba1:0:20   VMFS-DS-08
HP       HSV200           vmhba1:0:7    VMFS-DS-01
HP       HSV200           vmhba1:0:22   VMFS-DS-10
HP       HSV200           vmhba1:0:8    VMFS-DS-02
HP       HSV200           vmhba1:0:10   VMFS-DS-03
HP       HSV200           vmhba1:0:18   VMFS-DS-07
HP       HSV200           vmhba1:0:21   VMFS-DS-09
HP       HSV200           vmhba1:0:12   VMFS-DS-05
HP       HSV200           vmhba1:0:11   VMFS-DS-04
HP       HSV200           vmhba1:0:3    VMFS-DS-Templates
HP       HSV200           vmhba1:0:2    VMFS-DS-ISOs
HP       HSV200           vmhba1:0:30   VMFS-DS-SCRATCH
HP       HSV200           vmhba1:0:13   VMFS-DS-06

ESX Datastore to LUN Mapping (ESX4)

Produces a similar output to the above, but works for ESX4 servers. 

function Get-DS-LUNs-v4 ($objESXs) {
    foreach ($cluster in (Get-View -ViewType "ClusterComputeResource")) {
      $vmhostsview = $cluster.host | % { Get-View $_ }
      $vmhostview  = $vmhostsview | Select -first 1
      $ScsiLuns    = $vmhostsview | % { $_.Config.StorageDevice.ScsiLun } | Select -unique *
      $UUIDs       = $ScsiLuns | Select -unique UUID
      $Datastores  = $vmhostsview | % { $_.Config.FileSystemVolume.MountInfo } | % { $_.Volume } | Select -Unique *
      $HostLUN     = $vmhostsview | % { $_.Config.StorageDevice.ScsiTopology.Adapter } | % { $_.Target | % { $_.LUN } } | Select -unique *
      foreach ($UUID in $UUIDs) {
        $Lun = $ScsiLuns | ? { $_.UUID -eq $UUID.UUID } | Select -first 1
        $objVolume               = "" | Select Datastore, Make, Model, LUN

        $objVolume.LUN       = ($HostLUN | ? { $_.ScsiLun -eq $Lun.Key } | select -unique LUN).LUN
        $objVolume.Make        = $Lun.Vendor
        $objVolume.Model         = $Lun.Model
        foreach ($vol in $Datastores) {
          if ($vol.extent | % { $_.diskname -eq $Lun.CanonicalName}) {
            $objVolume.Datastore  = $vol.Name
          }
        }
        $objVolume
      }
    }
}
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