Hello all

We have a fairly well established Hyper-V 2012 R2 private cloud, in the main it works very well but we have had occasional issues with Storage displaying in the VMM GUI.

Previously, one of our SMI-S storage arrays went 'Not responding' and all the information and 'capacity' shown in VMM for that array provider disappeared.  We managed to resolve that with the vendor by restarting the SMI-S process on the array itself.

However this time all the Logical Units have disappeared from the Fabric part of the UI.  The Providers all show as responding, and the LUs are showing in the Properties for our HV Host Clusters and the Hosts themselves.  Most importantly, everything is still working.

However, the fact that the capacity in VMM has disappeared means that we are unable to create new Logical Units currently, so just leaving it to see if it appears isn't really an option.

We've tried multiple Rescans and Refreshes on the providers, restarting VMM Agent on two of the storage providers which are SOFS clusters, rebooting VMM itself and also using the /clearcache switch on the VMM Console.  No joy.

The Get-SCStorageLogicalUnit powershell command is not returning anything, but I'm not 100% sure it ever has, and Get-SCStoragePool returns all the pools, although with 'OperationalStatus: Unknown' and 'HealthStatus: Warning'.

There are no relevant entries in Event viewer that I can see.

Any ideas?

Regards
Ralf

• Edited by Ralf.Larsen Friday, September 04, 2015 10:07 AM

UPDATE: I just noticed that in the Arrays view under Storage in Fabric, the two arrays were showing Pools 1 (0 managed).

Sure enough, when I went into properties I could see the storage pools under each, and after managing them they are once again appearing in Classifications and Pools, and I can create Logical Units from them.

What I'm really not sure of is why VMM appears to have taken it upon itself to unmanage the two pools!

Regards
Ralf

UPDATE: I just noticed that in the Arrays view under Storage in Fabric, the two arrays were showing Pools 1 (0 managed).

Sure enough, when I went into properties I could see the storage pools under each, and after managing them they are once again appearing in Classifications and Pools, and I can create Logical Units from them.

What I'm really not sure of is why VMM appears to have taken it upon itself to unmanage the two pools!

Regards
Ralf

• Proposed as answer by Elton_JiMicrosoft contingent staff, Moderator 21 hours 55 minutes ago

UPDATE: I just noticed that in the Arrays view under Storage in Fabric, the two arrays were showing Pools 1 (0 managed).

Sure enough, when I went into properties I could see the storage pools under each, and after managing them they are once again appearing in Classifications and Pools, and I can create Logical Units from them.

What I'm really not sure of is why VMM appears to have taken it upon itself to unmanage the two pools!

Regards
Ralf

• Proposed as answer by Elton_JiMicrosoft contingent staff, Moderator Thursday, September 10, 2015 9:15 AM