Just a note ... we use SSDs as write cache in ZFS at rsync.net and although you <i>should</i> be able to withstand a SLOG failure, we don&#x27;t want to deal with it so we mirror them.<p>My personal insight, and I think this should be a best practice, is that if you mirror something like an SLOG, you should source two <i>entirely different</i> SSD models - either the newest intel and the newest samsung, or perhaps previous generation intel and current generation intel.<p>The point is, if you put the two SSDs into operation at the exact same time, they will experience the exact same lifecycle and (in my opinion) could potentially fail exactly simultaneously.  There&#x27;s no &quot;jitter&quot; - they&#x27;re not failing for physical reasons, they are failing for logical reasons ... and the logic could be identical for both members of the mirror...