P4000 MPIO on windows cluster

[Alexra]

Dear all,

in ordenr to update to SAN iQ 9.5 is is required or recommend to install the HP_DSM_Installer_9.5.

Environment is :

Windows Server 2008 Hyper-V Cluster with installed MPIO feature from Microsoft.

regards,

Alexander

[Alexra]

Hi,

has anybody anything to say about it ?

regards,

Alexander

[Bart_Heungens]

Hi,

Before upgrading the storage modules, first update the CMC, then the DSM MPIO software on all connected servers and finally the storage modules itself...

Kr,

Bart

[Emilo]

It is not required it only tells you that to make sure if you do have it implemented that you make sure to upgrade to the new version.

If you dont have it implemented you can ignore this warning.

It does provide better performance but make sure you heed the warning below.

HP P4000 DSM for Microsoft® MPIO
If the HP LeftHand DSM for MPIO is installed on a Windows host that is presented the same LUNs as ESX, this can cause LUN accessibility issues for ESX hosts. This issue occurs due to the unique LUN locking ability of the DSM for MPIO.
The storage stack for ESX will use SCSI-2 Reserve/Release commands or the Atomic Test & Set (ATS) capability of VAAI to lock a LUN, neither of which works with the HP Lefthand DSM for MPIO.
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1030129