bsnowd
Contributor
Contributor

ESXi 6.5 - RAID 10 datastore - (10K RPM hard disks) with SSD drive as host cache - benefit?

Hello,

I have a client setting up a new server.  They are using local 10K RPM hard disks in a RAID 10 configuration for the datastore.

I suggested getting an enterprise level 128GB SSD drive to use for host caching and wanted to get some input if that would still be helpful in this environment.

From what I have been reading, it might only be useful for an all SSD datastore.  

They have Essentials Plus licenses.

Thank you in advance.

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a_p_
Leadership
Leadership

Unless I'm mistaken, "Flash Read Cache" requires Enterprise Plus licensing.

Anyway, with a local RAID, you should definitely get a RAID controller which has a BBU/BBWC/FBWC cache option, to allow for write-back operation, rather than write-through without cache!

André

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