Comment Re:Same as always (Score 1) 680
If your data is too large to transfer over your internet connection, I think you need at least 3 drives. That way, you never have ALL your drives in the same place at the same time, even when backing up. You don't want some power surge to take out your main drive and your off-site backup on the one day the off-site backup is on-site for data transfer.
I keep two drives at home and one at work. Once a week I backup my main drive to the on-site backup. Once a month I bring the backup drive to work and bring the work drive home. Before and after each back-up, I check data integrity using ZFS (I scrub the main drive before back-up, and the back-up drive after back-up). Although you can use any method you like to detect corruption, you definitely need some mechanism to prevent copying a newly corrupted JPG over your good backups.
Sadly, all of the above was learned from real life failures.
I keep two drives at home and one at work. Once a week I backup my main drive to the on-site backup. Once a month I bring the backup drive to work and bring the work drive home. Before and after each back-up, I check data integrity using ZFS (I scrub the main drive before back-up, and the back-up drive after back-up). Although you can use any method you like to detect corruption, you definitely need some mechanism to prevent copying a newly corrupted JPG over your good backups.
Sadly, all of the above was learned from real life failures.