Thanks @stuartiannaylor, good to know. I’ve setup linux raid over SATA and used backup drives via USB3.0 (or higher) but haven’t tried to combine the two.
Interestingly in my latest rollout, I performance tested RAID6 and RAID10 as I hadn’t previously implemented those before deploying a RAID5 array. The write throughput was similar (within 10MB/s for an array writing at around 550MB/s to 7200rpm drives), while the available space was 33% greater. Single client sustained wifi throughput is rarely above 100MB/s, however multiple simultaneous clients can nearly reach the array write limits.
I’ve also used rsync
for years when RAID wasn’t an option but redundancy was vital. This can be as simple as employing cron
to periodically mount and sync to a backup drive then unmounting.
I’m looking forward to testing some ideas on the Rock5. I have a few old 320GB laptop drives that could be a part of my low cost test bench.
Cheers!