thattommyhall2
Contributor
Contributor

Single Point Of Failure For MSCS Clusters

Am I right in saying that the LUN containing any RDM files is a SPOF in the MSCS setup as as per the MSCS howto pdf?

0 Kudos
3 Replies
vmmeup
Expert
Expert

It could be. Depends on your SAN and how it is configured. Typically you will have redundant HBA's, Switches, and controllers along with a RAID 1, or 5 configuration for the spindels, but yes if your Array is tanked then you loose the LUN, you could cluster arrays and take remove that point of failure.

Sid Smith-----

VCP, VTSP, CCNA, CCA(Xen Server), MCTS Hyper-V & SCVMM08

  • Don't forget to award points for correct and helpful answers.;-)

Sid Smith ----- VCP, VTSP, CCNA, CCA(Xen Server), MCTS Hyper-V & SCVMM08 [http://www.dailyhypervisor.com] - Don't forget to award points for correct and helpful answers. 😉
thattommyhall2
Contributor
Contributor

I guess you could use any LUN mirroring the SAN provides too, we have redundant SPs, HBAs and switching for the SAN, just struck me the LUN is SPOF in our current setup.

Cheers.

Tom

0 Kudos
kastlr
Expert
Expert

Hi,

don't forget the filesystem and application data.

Depending on the failure condition, it might happen that the HW survives without an issue but the filesystem and/or application data need extra maintenance tasks.


Hope this helps a bit.

Greetings from Germany. (CET)

Hope this helps a bit.      Greetings from Germany. (CET)