raid 1 is a backup (mirror) so do not need backup s/w??

[famreeks]

Hi , Trying to get my understanding correct . I have 2 x 3 TB drives and If I was to raid the device it will mean that I have a mirror copy of what is on the 1st 3Tb drive on the 2nd  3tb Drive. Correct. As such the I do not need to have back up software as such. If I back up from my PC HDD with back up software to the Live DUO that is in RAID then it is backed up again as a mirror! 

Does all this make sense?

Cheers

[Swiftkidd]

Yeah it makes sense, Although it might be best to keep an additional copy for peace of mind. Caviar Green drives are budget drives and have a very high failure and return rate.. I've had 3 die in 3 years and I have 2 x 4TB units delievered recently both brand new and one of the units is faulty as B compartment hard drive has a tendcy to get stuck and is currently stuck solid with-in the unit. I had it out once now it stuck solid again.

[TonyPh12345 · Accepted solution]

RAID is NOT the same as "Backup."

It's a mirror.

If you accidentally delete a file, it's gone.

Backups allow recovery from mistakes. RAID does not.