I am currently installing a couple of Hitachi AMS 2100 SANs for presenting storage to ESX. The stripe size options for creating RAID5 LUs on the AMS are 64/256/512kb, with 256 being the default. Does it make a great deal of difference which is selected, what would be the best performance for ESX? Also is there any configuration required in ESX to ensure best performance? Thanks
Hi Bazza,
Let me know if you find out, I asked a similar question just before you
http://communities.vmware.com/thread/225662
I came across this looking for the same question you are. I asked around and the answer I got was "the default of 256k is the best for 99% of cases, especially with VMware VMFS partitions". The only time we would consider deviating from this is in a situation where we have a very predictable large sequential block workload (not typical with VMware VMFS') and possibly with things like video streaming where the controllers were struggling to write the data quick enough.
I hope this helps others looking for the same info.
R Hinder