Storage Spaces MPIO Settings
Recently I ran into an interesting configuration and event
log entries on a clustered Storage Spaces configuration.
What I noticed in the Windows Event logs were:
Literally hundreds of Event ID 308 / and 400 in this event
log. Which I was able to find a nice MS
based blog on to understand this was a disk access issue or concern.
When digging further I noticed that MPIO was not configured
for the HA clustered solution the deployment called for.
So installed the MPIO feature as normal. Once installed then access the feature and
the Discover Multi-Paths tab.
Added the Support for SAS Drives and then selected “Add”. This prompted for a reboot, so performed on
one node (after pausing it) and then rinse and repeated for 2nd
node.
After reboot then ran the PowerShell command:
>Get-MSDSMGlobalDefaultLoadBalancePolicy
>Set-MSDSMGlobalLoadBalancePolicy -Policy RR
Which set ALL MPIO devices to RR.
We then completed the testing and are finding this
acceptable.
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