If and only if you a. Have full, on-site backups b. Are fairly sure of your abilities and monitoring then I can suggest RAIDZ1. I have a pool of 3x3 drives, which ships its snapshots a few U down in my rack to the backup target that wakes up daily, and has a pool of 3x4 drives, also in RAIDZ1.
In the event that I suffer a drive failure in my NAS, my plan of action would be to immediately start up the backup, ingest snapshots, and then replace the drive. That should minimize the chance of a 2nd drive failure during resilvering destroying my data.
Truly important data, of course, has off-site as well.
If and only if you a. Have full, on-site backups b. Are fairly sure of your abilities and monitoring then I can suggest RAIDZ1. I have a pool of 3x3 drives, which ships its snapshots a few U down in my rack to the backup target that wakes up daily, and has a pool of 3x4 drives, also in RAIDZ1.
In the event that I suffer a drive failure in my NAS, my plan of action would be to immediately start up the backup, ingest snapshots, and then replace the drive. That should minimize the chance of a 2nd drive failure during resilvering destroying my data.
Truly important data, of course, has off-site as well.