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Difference between revisions of "VCP4"
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→Create and Configure VMware Clusters: Added EVM
m (→Enable a Fault Tolerant Virtual Machine: Initial update) |
m (→Create and Configure VMware Clusters: Added EVM) |
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| Line 304: | Line 304: | ||
* HA monitors VM to detect if they've hung / stopped responding, and resets VM if both | * HA monitors VM to detect if they've hung / stopped responding, and resets VM if both | ||
** VM Tools heartbeat lost in interval | ** VM Tools heartbeat lost in interval | ||
** No VM I/O in interval (default 120 secs, | ** No VM I/O in interval (default 120 secs, reconfig at cluster level <code> das.iostatsInterval </code> | ||
* Default 60 secs no h/beat, max 3 resets in 24 hrs (High sensitivity 30 secs and 1hr, Low 120 secs and 7 days) | * Default 60 secs no h/beat, max 3 resets in 24 hrs (High sensitivity 30 secs and 1hr, Low 120 secs and 7 days) | ||
* VM Monitoring should be suspending during network changes | * VM Monitoring should be suspending during network changes | ||
''' | '''High Availability''' | ||
* Uses the following networks for HA communication | * Uses the following networks for HA communication | ||
** ESX - All Service Console networks | ** ESX - All Service Console networks | ||
** ESXi - All VMkernel networks (not VMotion network if alternatives available) | ** ESXi - All VMkernel networks (not VMotion network if alternatives available) | ||
'''Distributed Power Management''' | |||
* Uses current load and VM resource reservation to calculate required number of powered-up ESXs | |||
* ESX power-on achieved by WOL, IPMI or iLO | |||
** IMPI or iLO: Must specify IP, MAC etc for each ESX | |||
** WOL: VMotion NIC must support WOL, and VMotion switchport must be set to Auto (as WOL often not supported by NIC at 1GB) | |||
* Must test ESX in and out of Standby Mode before enabling DPM | |||
'''Enhanced VMotion Compatibility''' | |||
* Hides additional CPU features in a cluster (ie features one ESX in a cluster has but another doesn't) | |||
* Requires no VM's to be running on the cluster (as the CPU type will effectively be changed) | |||
* Generally works for similar manufacture make & model CPU's with different stepping levels | |||
== Enable a Fault Tolerant Virtual Machine == | == Enable a Fault Tolerant Virtual Machine == | ||