[sending again fro a different account, since last-nights send did’t go thru]
I have a ZIL/Slog composed of a mirrored-pair of Intel DC P3700 SSDs, which
have power loss protection (PLP).
I’m entertaining the idea of obtaining some SSDs for a zpool storing “hot data”
(web, email, etc.) separate from another zpool for “cool data” (large media
files, backups, etc.). I plan to partition the 400GB P3700 and use half for
each zpool.
For the SSDs, there appears to be roughly three categories:
1) DRAM-less (e.g., Crucial BX500)
2) DRAM w/o PLP (e.g., WD Red SA500, SanDisk Ultra 3D)
3) DRAM w/ PLP (e.g., Synology SAT5200, IronWolf 110)
Would DRAM-less be best for this application, so that the SSDs don’t lie to the
ZIL about having persisted data to NAND?
Some might say that category (3) are the best drives, but wouldn’t many of
their features be redundant in this application, and it'd be cheaper to
centralize the PLP-function than having it in each drive the the zpool?
Thanks,
Kent
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