So I got a price quote on Netapp's Flash drives that you stick into a
Flash Pool and having my eyebrows rise off my forehead. Of course
Netapp's prices are/were no worse than EMC's prices for single SSD
drives, etc. Basically crazy expensive in both cases.
Now I'm entertaining the silly idea of just using a mix of SAS and
SATA drives in a flash pool instead. Get *some* of the advantages,
but lots cheaper pricing. Esp using those big fat slow 4Tb drives in
the dual drive sleds. Front them with a bunch of SAS disks and it
should do quite nicely.
God knows there shouldn't be any technical reason this can't work,
it's just a matter of moving blocks from one raidgroup in an aggregate
to another. But the Netapp technical sales guy was surprised by the
suggestion.
I'm loving the transition of SSDs into the enterprise space, because
it's forcing all kinds of changes on the vendors that are long
overdue. Just putting a pair of mirrored SSDs into a server is a big
boost. Using it to cache is good too.
What do others think?
John