EVA 8100 & SCSI-3 Persistent Reservation

[Taerg]

Does EVA 8100 support SCSI-3 Persistent Reservation? How can we configure this feature and what CV version should be for this functionality?

[Mikko Niskanen_1]

Aye,

See this:

http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1268820939663+28353475&threadId=1404859

Hope it's what your'e looking for.

[Taerg]

Mikko, thank you. But I need to know if SCSI-3 is supported by EVA 8100 and what CV or firmware is requered.

[Mikko Niskanen_1]

At least EVA 4000 with oldish XCS/CV combination works, don't see why EVA 8100 shouldn't work.

root# scsimgr set_attr -D /dev/rdisk/disk23 -a disable_flags='WCE PR'
Value of attribute disable_flags set successfully
root# scsimgr get_attr -D /dev/rdisk/disk23 -a disable_flags

SCSI ATTRIBUTES FOR LUN : /dev/rdisk/disk23

name = disable_flags
current = PR WCE
default = WCE
saved =

root# scsimgr set_attr -D /dev/rdisk/disk23 -a disable_flags='WCE'
Value of attribute disable_flags set successfully

root# scsimgr get_attr -D /dev/rdisk/disk23 -a disable_flags

SCSI ATTRIBUTES FOR LUN : /dev/rdisk/disk23

name = disable_flags
current = WCE
default = WCE
saved =

[Uwe Zessin]

It is automatically provided in the controller firmware. You cannot configure/enable/disable it for specific hosts. CV-EVA just shows when a reservation has been made.

[Taerg]

Please see errors on win 2008 r2 failover cluster validation.

Here is windows 2008 core team recomendation:

'call your storage vendor and ask them if your storage is compatible AND configured for use with Windows Server 2008 Failover Clustering'

http://blogs.technet.com/askcore/archive/2009/04/15/windows-2008-failover-cluster-validation-fails-on-validate-scsi-3-persistent-reservation.aspx

HP support could not answer my question and recomended to ask in this forum...

[Uwe Zessin]

Did you assign the correct operating system type (Microsoft Windows 2008) to those servers in CV-EVA?

While you cannot really make fine-grained configuration changes (the details of the CUSTOM bitmask are not documented), the OS type is a predefined configuration setup for a single operating system and tells the EVA how to properly interact.

[Taerg]

Uwe,
I can only assign 'Microsoft Windows' or 'Microsoft Windows LH' OS types. It can be custom type assigned but than I have to enter 16-bit hex value that I don't know.

We have CV 7.0. May be we should update to 9.2 but I am not sure that this will help.

[Víctor Cespón]

There's a specific mode for Windows 2008, do not select just "Microsoft Windows".

[Uwe Zessin · Accepted solution]

"Microsoft Windows LH" (LH = "Longhorn") was the codename for Windows 2008.

The custom mask is 00000004198009A8.