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Forum Newbie
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Last Login: Thursday, November 13, 2008 11:24 AM
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I am new to this VSA technology so I have what may be a stupid question. What happens if the ESX server that is hosting the VSA VM suddenly crashes? Does the storage volume controlled by this VSA become unaccessible?
Ken
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Supreme Being
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Depends on if the VSA is clustered with other VSA or not.
If it is just the single VSA on an ESX host than anything that takes the VSA offline also takes the VSAs volumes offline.
If it is a VSA clustered with other VSA and the volumes are at least set for 2 way replication (mirrored, default) then any individual VSA going offline does not take the volumes offline. The volumes continue to be hosted by the other VSA nodes in the cluster.
Hope that helps.
Adam C
Product Manager
LeftHand Networks
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Forum Newbie
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Last Login: Thursday, November 13, 2008 11:24 AM
Posts: 2,
Visits: 6
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Adam,
Thanks for that info. What happens to the datastore that is controlled by VSA if one of the ESX servers goes offline and leaves the hard drives unaccessible to the VSA?
Ken
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Supreme Being
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Last Login: Yesterday @ 2:22 PM
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| I'm not quite sure I understand your question. You mean if you lose a VSA permanently due to some failure of the disks or VMFS underneath it? If so then similar answer to before. If it was a single VSA with no others clustered with it and the data drive of the VSA is destroyed somehow then you have lost what was on the VSA. If it was a VSA clustered with others and your data was at least 2 way replicated (mirrored, the default) then you can repair the VSA and just turn it back on, SAN/iQ will resynchronize the data automatically, or replace it with another VSA. Your data is still there and should have stayed online. One of the most important points of clustering nodes is to make a redundant SAN.
Adam C
Product Manager
LeftHand Networks
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