Review on Red SA500 NAS NAND Internal by David Strawn

I am using multiple WD Red SA500 4TB NAS drives in a ZFS pool with 6 mirrored virtual devices. The overall performance of the pool is excellent, although the average write speed per disk is only about 200 MB/s over two recycles. (I've never seen it surpass 380MB/s.) I'm not sure if that's the sustained write speed of this drive, or if there's a bottleneck (or deliberate throttling) elsewhere. As mentioned in the title, it's still early days - the bath has only been open for a couple of months. In the past few days, ZFS has started showing checksum errors for one of the Samsung EVO 860s that are also in the pool. I replaced it with SA500. I'll try to update this review over time to see how the SA500 fared. Update - September 17, 2020: I now have eight of these SSDs. So far no problems.