I lost my data trying to back it up
Getting backup right is extremely important, that is why you need proper tools. For the last 10 years I have been using ZFS snapshots and replication. I keep 180 days with snapshots on the remote backup and 30 days for the local.
I use it to take backup of virtual machines, different databases including "running", sql servers. And of course important files, documents and photos.I've also configured a daily mail with a log about how the backup/snapshot/replication went. Even if it went fine. So if I don't get mail, I know something is up and can fix it asap.I have never slept so well after doing this with ZFS, even backup for Windows SQL Server with iSCSI volumes works great!More people should do backup with ZFS!