Originally Posted by DuckieHo
Better questions for 2TB of data.... why would you want to run RAID1 backups of it? You are pay a hefty premium for RAID1.
A single RAID1 is less safe than two independent copies. You can lose the unit, drop it in water, get stolen, RAID controller fries, ect..... Basically, RAID1 does not offer very much benefit for backups. RAID1 is for redundancy
.... the ability to continue working in case of a HDD failure. Backups do not require redundancy. Good backup policy requires multiple backups.
If the backup is important, you should have at least two backups.....
The sky could fall, the earth could end, anything could happen, yet the RAID 1 device would still
offer more protection from drive failure than RAID 0.
All I was saying was that I wouldn't trust a RAID 0 external USB device for my backups because there is statistically twice the chance of data loss over a single drive. I stated that I thought it would be neat if this drive could switch to RAID 1 so that you could have statistically half the chance of data loss over a single drive, something I think would be worth the premium. You very clearly do not, I understand that.
To ease you qualms about my backups, I have a copy that goes to S3, and a copy that resides on my server. The failure I had happen was a long time ago, and a hard lesson learned.
Ah, I see the confusion. What I was speaking about in terms of the multiple externals was not about how I performed my backups, but how someone who was trying to just protect their laptop to an external wouldn't want to haul around two drives. I didn't really make that clear, I was speaking hypothetically.
Long story short, I don't trust externals very much as is, and a RAID 0 external makes me trust it even less. I'll bow out of this conversation and let it continue.Edited by SectorNine50 - 1/8/14 at 2:48pm