Optane or NAND for SLOG of home lab ZFS in 2021

Dear forum!

Would you consider the

Intel Optane SSD DC P4801X 100GB, U.2

still as a good choice as SLOG device for a home lab ZFS?

RaidZ2 with dedup on x570 with 128GB EEC Ram and 500GB L2ARC (Western Digital WD_BLACK SN750 NVMe SSD 500GB, M.2)

Or recommend an pci-e 4.0 NAND SSD?

Thanks a lot!

I always vote for Optane.

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I am a little bit concerned because of the relatively low write speed of 1GB/s

Enough for now (10G ethernet)

But is this a realistic bottleneck that could be avoided by using NAND Flash?

It seems that the write endurance has gone up significantely.

As far as I know about ZFS the SLOG does not get hit for every write. Only synchronous writes.

So unless you’re running a database transaction workload it should be fine.

Someone else may know more than I do about that though.

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What speed are you getting out of your array? nevermind, you would not ask about a bottleneck if you were not expecting to encounter one

I believe the experts, people on the forum that know more about zfs than I, say that the slog isnt a write cache, therefore it should not determine/limit your zpools write speed.

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