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vmware 5.5 / server 2012 / failover clustering

Posted on 2014-08-07
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Hi Experts,

We have been asked to do some work on a file and print failover cluster that is using raw device mappings for its storage.

Part of this work will involve testing that the failover of the file server resource actually works as expected.

Is there any reason as to why it might fail or any caveats that somebody should be aware of?
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Question by:cmatchett
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by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 40247605
The biggest issue you may come across is whether your SAN supports SCSI-3 Reservations, for the RDM, but most SANs supported this function.

The new Failover Cluster Wizard in WIndows 2012, verifies the requirements and compatibility of RDMs for nodes, and tests failover as part of the wizard.

So, it's very straight foward.

Make sure both nodes are on different ESXi hosts, and if using DRS, create an anti-affinity/affinity rule to ensure that both nodes are on different hosts....

BUT.....why A Cluster...

Why not use a single Print Server and File Server on VMware, and use VMware HA ?

Same function.....as far as availability......if a host fails, VM will be restarted automatically.....

Setup for Failover Clustering and Microsoft Cluster Service - ESXi 5.0/vCenter Server 5.0
http://pubs.vmware.com/vsphere-50/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-50-mscs-guide.pdf


http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004617

or is this requirement for Patching?
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by:cmatchett
ID: 40247644
Dunno why i said file and print, it's only a file server cluster.  This cluster is already configured and operational, we have been asked to test it.

The only reason i can think of that somebody would want a cluster is for patching reasons.  Like you say, it's already highly available because it is virtual machine that is protected by HA.

A highly available print server in MS terms now is a single virtual machine that is highly available.  No longer any support for clustering of the printer spooler.
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Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 40247666
Two methods for testing, as testing is already now completed in the Creation through the wizard.

1. Power OFF the VM (not shutdown) Power OFF! This is a hard failure, and Node 2, should take over when failover occurs.

2. Other Test, is to POWER OFF the HOST, the VM is on!
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