> > Er, eek?!? > > I was mentioning RAID 0 as an absolute last resort > can't-afford-anything-else option. > > You realize that RAID 0 *masively* increases the chance of total loss of > data across the entire array if one drive develops a fault, right? It's > not just "chance_of_disk_failure * n drives" either - the chance of any > one drive in a set failing is much larger, since you're really computing > the chance of *no* disk in the set failing. > > Because RAID 0 stripes data, if you lose one disk you lose all data in > the array. > > The absolute minimum I'd ever consider is a RAID 5 array - and for more > than about six disks, that gets pretty dangerous too and I switch to > RAID 6 for anything important. > > If you must use RAID 0, you need to have regular S.M.A.R.T testing > running on the drives to detect media errors - so you need smartd > configured and running. You should have that on any RAIDed server > anyway, but it's utterly crucial for risky RAID 0 setups. > > You also need to know that if tomorrow all that data is gone, you don't > actually mind. >
Well, I thought the server was setup with Raid 0, then I thought for sure it was Raid1, either way looks like the server is not setup correctly, according to cat /proc/mdstat So either a drive failed or the server was never setup correctly. So RAID 5 or 6, huh? I'm looking into it. We do have 3 different full backups, but wouldn't want to start using them. > OK, that would've been good to know. You want to manage volumes quite > differently if you're using removable HDDs. Oh yeah, how so? 2 Volumes per external hdd is not a good idea? Or is the problem more of mounting and unmounting the drives each week via a script? We seldom restore files and 8/10 files needing restoring are from the previous day. We have a mirror backup that I use restore the files, so incremental backups are fine for us. Thanks again for all your help, it is greatly appreciated. +---------------------------------------------------------------------- |This was sent by ikkysle...@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +---------------------------------------------------------------------- ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users