#vSphere Metro Storage Cluster with vSphere 5.5


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I had a couple of questions around the exact settings for Metro Storage Clusters with 5.5. It was the third time in two weeks I shared the same info about vMSC with  5.5 so I figured I would write a quick blog making the information a bit easier to find through google. Below you can find the settings required for a Metro Storage Cluster with 5.5. Note that in-depth details around operations / testing can be found in this white paper: version 5.x // version 6.0.

  1. VMkernel.Boot.terminateVMOnPDL = True
  2. Das.maskCleanShutdownEnabled = True 
  3. Disk.AutoremoveOnPDL = 0 

I want to point out that if you migrate from 5.0 or 5.1 that Host Advanced Setting “VMkernel.Boot.terminateVMOnPDL” replaces disk.terminateVMOnPDLDefault (/etc/vmware/settings). Das.maskCleanShutdownEnabled is actually configured to “true” by default as of vSphere 5.1 and later, but personally I prefer to set it anyway so that I know for sure it has been configured accurately. Then there is Disk.AutoremoveOnPDL, this setting is new in vSphere 5.5 as discussed here. Make sure to disable it, as PDLs are likely to be temporary there is no point removing the devices and then having to do a rescan to have them reappear, it only slows down your process recovery. (EMC also recommends this by the way, see page 21 of this PDF on vMSC/VPLEX).

vSphere Metro Storage Cluster with vSphere 5.5” originally appeared on Yellow-Bricks.com. Follow me on twitter – @DuncanYB.


Originally Posted: vSphere Metro Storage Cluster with vSphere 5.5

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