> However, when you hit a failure that SSD becomes a single root cause of data loss from several disks when losing that SSD (unlike a read cache). In theory yo

> However, when you hit a failure that SSD becomes a single root cause of data loss from several disks when losing that SSD (unlike a read cache). In theory you can massively reduce this risk by keeping a copy of the journal in memory so it only corrupts if you have a disk loss and a power outage within a few seconds of each other. But I don't know if the tools available would let you do that properly.