[TriLUG] New computer...finally!
igor at igorpartola.com
Sun Dec 4 20:19:15 EST 2011
Doesn't RAID also help with data integrity? If a failed primary disk
corrupted some files that later got backed up, you may have no way of
getting originals back, from what I understand.
On Dec 4, 2011 7:32 PM, "Alan Porter" <porter at trilug.org> wrote:
> > Basically, I'm looking for a desktop with at least 4
> > cores and 6-8GB of memory and 2 drives in a RAID1 for OS.
> Remember, RAID is not a backup strategy. Fat-finger a command
> like "rm -rf /" and you'll lose two RAID copies just as fast
> as you'd lose one on a non-RAID disk.
> RAID is for high availability. If you lose a disk, a RAID
> system can keep running while you hunt down a replacement
> disk. If uptime is important to you, then RAID is the way
> to go.
> What's much more likely for home use is the need for a backup
> strategy. In that case, you'd be better off setting up the
> two disks as separate partitions, and run something like
> rsback to make TimeMachine-like copies from the primary to
> the backup drive. This would give you the ability to restore
> a deleted or changed file from one of many snapshots in the
> If you lost a disk using the non-RAID primary/backup strategy,
> you would lose a little time replacing the bad disk, and also
> while copying files from one to the other. But that's not
> catastrophic for a home system.
> Again, RAID != backup. For home, I would choose "backup".
> # ɹǝʇɹoԀ uɐl∀
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