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I'm running a Slack 10.1 server with some critical apps/data that i can't afford to lose at any given time for more then an hour. Right now the only method of backup that i have is rsync and offline backups of my critical data. Although, in the case of something like a disk failure right now i'd be out for a day (which i really can't afford). I started reading up on doing a RAID array for redundancy, but it sounded quite complex.
Basically what i need is some suggestions for disaster recovery to get me back up and going ASAP in the case of a disk failure.
RAID is your best bet, every server admin should know how to use RAID
just make sure you understand it before you start to use it on production systems, there software RAID, and hardware RAID make sure you understand the differences before you implement either one.
Thanks for the suggestions. Would setting up a hardware raid configuration be much more complex then the afformentioned software one? If i'm going to spend the time w/ the project i'd rather have a hardware setup if it will be 'better'.
the only RAIDs i would bother looking at on this site are
RAID-0
RAID-1
RAID-5
the other RAIDs are never used
Also, I wouldnt say software RAID is really bad, if you have never used RAID before, I would try out software RAID on some sorta test machine, just to get an idea.
Here are some HOWTOS i found on The Linux Documentation Project
You're looking at high-availability systems. I would strongly urge the use of RAID1 on drives and having a redundant server on standby. Also keep spare parts locally.
There is no reason a disk failure should take you down for a full day. I routinely bring machines back up in 3 hours from disk failures WITHOUT RAID.
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