On Sat, Jan 17, 2015 at 10:44 PM, Peter Toth <[email protected]>
wrote:

> Out of interest (not trying to steal the thread) what is the best practice
> with the number of slog devices, there are different ideas out there. Is
> one slog sufficient or should they be mirrored in a pair?
>

I believe mirroring is the best practice so that if one SSD dies, you don't
lose any data before the slog has time to write to the zpool.  My
experience with SSDs is that when they fail they are just gone; unlike an
HDD where you can often tease data off a drive that zfs kicks out of the
pool.   Also; when a single slog dies, you lose your zpool and it's a real
pain to rebuild it.



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