VCenter 4.1 Disk Latency Question

[JohnLong]

Hello All,

Can anyone piont me in the right direction to what should be maxiumum "Highest Latency" that is reported back from vsphere that would be considered acceptable before disk performance would be adversely affected on the host machines? We get figures back of 16.980ms, we notice disk access seems to be sluggish. I read in another post that anything over 15ms is considered high, would this be the case? Our disk storage is from a SAN stoage system.

Any information would be helpful or even point me in the right direction to some chart performance guide.

Thanks

J

[rsicilia]

Hi John, a disk latency inferior to 20 ms is a good scenario.

The default treshold for Storage DRS is 20 ms of latency in the Datastore, so 16 ms is a good responce.

Bye

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Rocco Sicilia

http://www.roccosicilia.it