Reply to post: Re: @ACs ... Seriously?

Re: @ACs ... Seriously?

Seconded.

Raid is for Data protection using inexpensive disks. This PCIe flash device? NOT INEXPENSIVE. (I *might* mirror them if I was super paranoid, but that's just pissing money down the drain)

Now, you want to use them for a classic data cache tiering scenario:

PCIe Flash cards for "hot" tier of storage ( VDI boot storm reduction, super high end database usage, etc.)

Enterprise SSD in raid 1 or 5 for "Warm" tier(Frequently accessed databases and other files)

Multiple Giant Raid 6 Array of spinning rust for "cold" storage.

I've managed to get lucky- the storage arrays we have at $employer are hybrid SSD and spinning rust drives; the SSDs act as the 'hot' and 'warm' tiers, whereas the spinning rust is a raid 6/ triple parity array of slow, large SAS drives. We've not had an I/O problem with them at all in the ~4 years we've had them in use.