My Book Mirror Edition RAIDs your data
There's no such thing as too much protection for your valuable files. Although external hard drives can provide backup copies of files on your hard drive, what if you use external drives for primary storage? Sure, you can use yet another external backup drive, but a better solution might be a RAID array with two drives. Western Digital offers such a system with its new My Book Mirror Edition ($549.99).
More on preventing RAID problems
Mix and match a bit with the drives in your arrays, and avoid whenever possible using drives from the same manufacturing lot. And to be safe, implement RAID 6 that allows recovery from two failed drives instead of the one failed drive that RAID 5 protects you against.
Preventing RAID problems
Using RAID storage is supposed to help anticipate such catastrophes by providing a level of fault tolerance for your storage subsystem. But even RAID can have
its problems, especially when you use some newer high-capacity hard drives in
the near-terabyte range that have less than stellar reputations for reliability.
A colleague found this out recently when one of the drives in his RAID 6 array
failed after only a year of use. Since RAID 6 provides an extra level of redundancy
over RAID 5 and can survive the loss of two drives without data loss, my colleague
felt it was safe to contact the manufacturer and request a replacement drive
for the one that failed.
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