The latency of a regular SATA SSD is more than good enough if you want a log of writes to spinning rust. The increased write endurance might be appealing for so

The latency of a regular SATA SSD is more than good enough if you want a log of writes to spinning rust. The increased write endurance might be appealing for something like a ZFS intents log (ZIL). Too small to provide much of an cache, when you can have 256GB of SSD for the same price. It is a pity that the marketing docs don't address how this impacts on write consistency. Instant write sync is the primary advantage of hardware RAID, but still, how much better is this than a normal SSD?