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Multiple sites with two-node clusters + FOM

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raadek
Honored Contributor

Multiple sites with two-node clusters + FOM

Hi,

Can someone share their thoughts on the scenario described below?

- multiple remote sites, each one of them independent
- goal: deliver as much local resiliency as possible (site-to-site fail-over is out of scope / not required)
- two physical servers (with internal storage only) with vSphere 4 Advanced at each site
- two VSAs at each site
- two Windows VMs at each site - to be protected by vSphere Fault Tolerance

My understanding of P4000 fail-over process is that Failover Manager is a must for the above to work (correct me if that's not the case)

And this is what I think regarding FOM hosting:
1) A third physical box running FOM at each site (desktop with VMware Player? Server with ESXi?)
OR
2) Multiple instances of FOM installed on one ESX server at the central site. Each FOM instance will access their relevant VSA clusters & maintain quorums remotely over WAN links.

Comments please?

Regards,
Radek
Don't panic! [THGTTG]
5 REPLIES
ajamil786
Frequent Advisor
Solution

Re: Multiple sites with two-node clusters + FOM

You would need a FOM at each site to maintain quorum in case of a failure. For FOM hosting,option 1 would work. Option 2 ill create a single point of failure and latency.
Fran Garcia
Frequent Advisor

Re: Multiple sites with two-node clusters + FOM

Why don't you run a FOM in the ESXs you already have? If you install on a local disk (not a iSCSI LUN) you'll have a functional VM even if there's a storage outage. Run 2 FOMs (one in each ESX) for extra security :-) .
Mark...
Honored Contributor

Re: Multiple sites with two-node clusters + FOM

Hi,
You may wish to know that you can only have 1 FOM or a VM per management group.
Mark...
if you have nothing useful to say, say nothing...
raadek
Honored Contributor

Re: Multiple sites with two-node clusters + FOM

Guys,

Many thanks for your replies.

Long story short, HP/LHN confirmed that a third physical box running FOM at each site is required to maintain resiliency.

Regards,
Radek
Don't panic! [THGTTG]
raadek
Honored Contributor

Re: Multiple sites with two-node clusters + FOM

Thread closed
Don't panic! [THGTTG]