RAID Backup
Working perfectly!
Usually, a person needs a backup when their disk drive fails. All disk drives fail sometime - there is no escape from that truth. But there are other reasons for keeping good backups:
- Total disaster, such as a fire or flood that destroys the whole computer and all nearby backups.
- Deliberate mischief, such as a virus that deletes important files.
- Accidental deletion or modification of one or more files.
I’m sure there are more reasons, but if we cover these we’ll probably have the rest covered.
Drive Failure:
Disk drive failure can mostly be avoided by using two mirrored drives in a configuration known as RAID 1. RAID means Redundant Array of Independent Drives, and has several well-defined levels. RAID 1 is a simple comfiguration with two drives which always contain exactly the same information, hence the term “mirrored.” If either drive fails, the other simply becomes the system’s sole drive and takes over without a hitch. Since the probability of two drives failing at once is very small, RAID 1 pretty well covers that problem. The new computer here employs RAID 1.
Total Disaster:
If the building burns…
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Written by Don on December 2nd, 2007 with no comments.
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