MC/ServiceGuard, IBM Shark and SDD

[Sherry Strohmeyer]

Is anyone aware of an HP "Service Guard Support Matrix" I have a copy of the ibm ESS support matrix that shows IBM's ESS is supported in an MC Service Guard ENV however, not when using IBM's SDD virtual path software. This IBM doc is from this month but I would like to see something from HP on this.

Thanks

[Geoff Wild]

This is the only thing I can find:

http://docs.hp.com/hpux/onlinedocs/4076/SG%20SGeRAC%20EMS%20Support%20Matrix_10-3-03.htm

You will probably have to contact your HP Account Rep or place a Software Support service call.


Rgds...Geoff

[John Poff]

Hi,

I can confirm this. We run an MC/SG cluster with two nodes that used to be attached to an IBM ESS Shark disk array. We heard that SDD wouldn't work in an MC/SG cluster and that is correct. We tried it and it failed. The SDD software replaces your cXtXdX disk devices with vpath1, vpath2, etc. These vpathXX devices are fine with LVM on a standalone box, but MC/SG doesn't like them, and the cluster configuration will complain about them and fail. One reason why we now live on an XP1024 disk array.

Been there, tried that, still got the Shark fin. :)

JP

[melvyn burnard]

The IBM SHARK array can be used in a Serviceguard cluster, but os not officially "supported". This means it may work ok, but then again may not. It has not been tested by the division responsible for Serviceguard, hence it is not "supported".

[Gord Moore]

See page 13 of the IBM interoperability guide.

http://www.storage.ibm.com/disk/ess/pdf/interop.pdf

SDD is not supported on ServiceGuard. PVLinks works fine.

[Jasja Verbeek]

Hi,

We have several sharks connected to our clusters. it's not "supported" by HP , but we got "support" from IBM that it should work. (without SDD !)

We have different kinds of sharks.

I don't know what will happen when there's a firmware upgrade or something and the disk connections are gone...

Good luck,

Jasja