Yes this has been covered, but IMO there is not such thing as too many backup threads. I get really frustrated when people post "My hard drive died and I don't have a backup, how do I recover my ENTIRE recording archive" threads.
Anyway...here is my backup strategy:
1. Raw masters / Finished Edits on a hard drive in my main computer, backed up automatically nightly to:
2. Hard drive on my backup/media server, manually backed up semi-monthly to:
3. External hard drive and stored at my brothers house.
That is the "3-2-1" backup strategy. 3 copies of everything, 2 on-site, 1 off-site.
I'm am thinking about adding a 4th copy that I will either store in my safe deposit box, or send to my parents house since my brother lives just a mile from me. If there was a flood, we might both get taken out.
It's also important to note to TEST your backups on a regular basis. A backup is not a backup if it is corrupt.
I use Microsoft SyncToy 2 to make my automatic backups. I manually copy files to my off-site backup.
Oh, if you aren't already doing so, upgrade to SyncToy 2.1. SyncToy 2 has been known to cause data corruption issues when backing up to drives over a network.
http://www.microsoft.com/downloads/details.aspx?familyid=c26efa36-98e0-4ee9-a7c5-98d0592d8c52&displaylang=enMy strategy is similar to yours, except only 1 drive is on all the time. If the drives aren't spinning I figure there's less of a chance of them failing (I hope...)
-2TB drive in my main PC. Audio masters stored here...original recordings and edited copies. FLAC is streamed throughout the house from this drive.
-Offline 2TB drive #1. Plugged in and synchronized with a Robocopy script whenever I make an addition to the main drive.
-Offline 2TB drive #2. Also synchronized with a Robocopy script. Stored at a remote location. Backup drives 1 and 2 are swapped regularly, to keep the drive at the remote location up to date. I'll just bring the synchronized backup drive to that location and bring the un-synchronized drive home.
The backup drives are bare drives, plugged into the Thermaltake BlacX for quick synchronizing.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153071&cm_re=thermaltake_blacx-_-17-153-071-_-ProductThese are decent cases for storing bare drives:
http://www.wiebetech.com/products/cases.phpedit: robocopy...
robocopy E:\ H:\ /MIR /XD "System Volume Information" /LOG+:D:\logs\e_backup.txt /NP /TEE
another edit: I use disk monitoring software called Hard Disk Sentinel. It sits in the system tray and does periodic diagnostics on all hard drives, tells you power on time, estimated lifespan, etc. You can set it up to alert you in different ways (email, popup, etc) if it detects any issues with the drives.