topic Re: Service Guard Install in Operating System - HP-UX

Service Guard Install

MikeL_4 — Fri, 01 Oct 2004 10:44:20 GMT

I am installing Service Guard for two new servers that we will be implementing.

Do I also install the Quorum Server depot ??

and what is the Quorum software used for ??

Re: Service Guard Install

melvyn burnard — Fri, 01 Oct 2004 10:50:09 GMT

The Quorum Server is used a method of supplying the cluster lock mechanism without using a shared disc. You install the QS software on another host that is NOT part of the cluster.#
see:
http://docs.hp.com/hpux/ha/#Quorum%20Server

Re: Service Guard Install

Sridhar Bhaskarla — Fri, 01 Oct 2004 10:54:52 GMT

Hi,

Quorum server plays the role of lock disk. I heard that lock disk will eventually be replaced by Quorum server. Quorum services will come into picture where there is a 'tie' due to communication failures between the servers. If you don't have dedicated heartbeats, I suggest you go with the traditional lock disk configuration.

-Sri

Re: Service Guard Install

melvyn burnard — Fri, 01 Oct 2004 10:59:39 GMT

one thing to note is that the QS server wiull be able to serve 100 nodes, or 50 clusters, whichever limit is reached first.
Also, if you were to increase the cluster size to above 4 nodes, you would HAVE to remove the cluster lock disc, whereas you can have the quorum server for clsuters that have up to the full 16 node configuration.

Re: Service Guard Install

Geoff Wild — Fri, 01 Oct 2004 11:45:25 GMT

Quorom needed if more then 4 nodes in cluster.

Just a FYI, follow th MC/SG install in:

http://docs.hp.com/hpux/onlinedocs/B3936-90079/B3936-90079.html

or pdf:

http://docs.hp.com/hpux/pdf/B3936-90079.pdf

Rgds...Geoff

Re: Service Guard Install

MikeL_4 — Fri, 01 Oct 2004 11:46:36 GMT

Thanks all