ESX and CLARiiON read/write cache settings

[dp_tn]

So I am in the unique position of having a couple of CX3-80's almost completely dedicated to my ESX farm.

Does anyone know of any best practices or recommendations on setting the read and write cache on the SPs?

[whynotq · Accepted solution]

as far as I've seen there are no recommendations from EMC, I have tended to set them up along the same lines as i do when attaching a NAS Head to one, that is to give ~400mb to Read and the rest to write. But what i would say is you have soooooooooo much available on the 3-80 i'd set write cache to it's maximum and then see how much Read cache you can asign afterwards.

[dp_tn]

Since there doesn't seem to be an official EMC statement on it, and you can't really tailor it to any specific workload, treating it like a NAS device seems to be the best bet.

The max write cache seems to be 3GB so I have allocated remaining cache to read.

Thanks for the input!