[K12OSN] Data Storage - Redundancy and Backup Suggestions

[Krsnendu dasa]

backuppc is a great backup tool worth considering.

On 04/05/07, Daniel Bodanske <daengbo at gmail.com> wrote:
>
> >From the size of your enrollment, I'm going to guess that your budget
> is limited. Hardware raid is significantly more expensive than
> software raid and the less expensive hardware raid systems are simply
> software raid on a chip. Hardware raid does offer you simple swapping
> and rebuilding, though I understand that SATA solves this problem in
> some cases.
>
> Get a SATA card aind out about software raid on Linux here:
> http://www.linux.com/howtos/Software-RAID-HOWTO.shtml
>
> You are specifically interested in section 6 on monitoring. mdadm can
> mail you automatically when errors start.
>
> Good luck,
>
> Dan
>
> On 5/4/07, Martin Woolley <sysadmin at handsworth.bham.sch.uk> wrote:
> > On Friday 04 May 2007 01:38, Nick Fenger wrote:
> > > Hello fellow K12ltsp'ers,
> > >
> > > Currently, all of my student's files (and some of mine) are spinning
> on an
> > > old 80GB drive in the smb-ldap PDC with no backup and no redundancy. I
> can
> > > barely sleep at night.
> > >
> > > We are starting a online student portfolio project next year that will
> add
> > > lots of data that needs to be safely stored, backed up, etc...
> > >
> > > Any suggestions for size, type of drives, should I stick them in the
> PDC
> > > and just use software RAID or do I need some kind of Hardware
> solution?
> > > Should I buy some kind of external drive array? How will I know if
> > > something goes wrong? and what is the best way to backup all of this
> data?
> > >
> > > We are a single site independent charter school with a maximum
> enrollment
> > > of 320 students K-12.
> >
> > Hardware RAID is far superior to software RAID.  What we do is
> > - the students data lives on a file server with a RAID 5 array.
> > - every night this data is copied to another RAID 5 array at the
> opposite end
> > of the school, in a completely separate building. We use rsync.
> > - every night this backup is further backed up to tape.
> > - the tapes are stored in a  third part of the school.
> >
> > The only weakness in our solution is someone is assuming that the wooden
> > bookshelf the tapes live in is fireproof, but I don't worry to much.
> >
> > In theory our recovery strategy is
> > - if the file server dies, the backup server can become the file server.
> > - if the backup server dies, no problems, just get another file server
> and
> > continue the scheme
> > - if an aeroplane crashes and wipes out the whole site, tough, although
> I do
> > have the a tape under the bed at home so we could get back some of the
> > students data (albeit  a month or two out of date).
> > --
> > Regards
> > Martin Woolley
> > ICT Support
> > Handsworth Grammar School
> > Isis Astarte Diana Hecate Demeter Kali Inanna
> >
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