[CentOS] Backup server
jfranz at freerun.com
Thu Jan 14 13:11:31 UTC 2010
Sorin Srbu wrote:
> Today I have five 500GB-disks raided on linux machine. Remove one for
> and I have 2TB of real space available. Doing a 0+1, ie 1TB, would indeed be
> better as performance goes, but 1TB of space, well, it just isn't enough
> As it is now, the 2TB shebang is mounted as /backup. Does that count as a
> single filesystem?
If you have any budget at all, invest in bigger drives. 7200 RPM 1 TB
RAID rated drives can be bought for $160 each. Desktop rated 5900 RPM
1.5 TB drives (which you can probably get away with in a dedicated
backup server since you don't care a lot about speed and can tolerate
long pauses for sector repair) can be bought for $110 each. Check Newegg.
Second, to maximize 'depth' of backups you should use a 'Tower of
Hanoi'-like backup system.
If your selected backup software supports either hardlinking or plain
old incremental backups that will keep the size of backups down a lot
while giving you history.
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