Ever since I got the WD My Book Studio II, I keep all my photos in it as it is a RAID device. A 2TB device provides 1TB of storage when it is in RAID 1 mode (mirrored) and I quickly approach running out of room with RAW files being part of what I keep. Luckily I have a couple slightly bigger capacity compatible drives to let me upgrade the external unit with.
After opening the case from the top and unscrewing the top retaining plate the original 1TB drives can be pulled out. They are very snug so it took a little bit of force to extract them from the case, like pulling teeth :P
Here is what the case look like without the drives. It is pretty minimalistic. One logic board right in the middle in between the drives. SATA connections at the bottom. There are rubber feet to cushion the drives as well.
The original 1TB drives are at the top, I am replacing them with the 1.5TB drives. They have to be the Caviar Green drives, probably for power consumption and heat dissipation reasons.
Here they are all assembled. I am going to put the spare 1TB drives into my Linux server as another RAID 10 set :) More on that here.
After connecting the drive back to my iMac, the WD Drive Manager automatically recognizes the new drive configuration and sets it up automatically with maximum capacity mode (RAID 0). Just be forewarned that all the data in the drives would be wiped clean!
I changed it to RAID 1 (mirrored) mode and now I have half the capacity, but total data redundancy. After copying all the photos back on it, I still have 50% space left, so I should be good for another year or so :)
How do you keep your data safe? What do you do to prevent data loss from hardware failure?