On Wed, 2005-08-24 at 08:43, Olivier LAHAYE wrote:
> Your solution is working well and it is similar to my current configuration
> (all laptop are syncing their D drive to the home dir of the user that owns
> the laptop on a Filer:user work saved).
> The problem is that due to multiple instances of the same file on the server,
> we run out of space (80 laptops 60GB each even if not full is pretty much).
You have to make a business decision about how much you can spend vs.
the risk involved. I'm happy to keep this intermediate copy on a
big, cheap IDE drive since you would only lose data if this drive
died before the backuppc run AND you lost it on the source machine
in the same time window - and then you would be back to the previous
day's copy from the backuppc server like you would in most other
failure circumstances anyway. In some cases my intermediate copy
is on a Linux software RAID1 mirror because that happened to be set
up anyway in the remote offices.
> So we bought a DELL SCSI Bay that has 1.6TB of storage space for backuppc
> thinking that we would reconver our Filer in project storage only.
If I were buying drives again, I'd probably go with software mirrored
IDE or SATA up to 400 gigs because handling a pair of drives that
can each function standalone on any controller has some advantages in
disaster recovery situations. For something larger, the next choice
would be a 3ware SATA raid contoller (real hardware raid - the cheaper
controllers do the work in bios) and some kind of hot-swap SATA
enclosure. But I'd buy a spare controller at the same time as the
primary because drives used in a hardware raid can only be accessed
by a similar controller and you might need one in a hurry.
> Currently, our vital data from our servers is stored using bacula with
> offsite
> clones and lpatop are backed up with BackupPC while still being synced to our
> Filer (until I find a solution to offsite backup my BackupPC server using my
> available resources).
> Thus in case of hard drive crash, I can quickly recover the hard drive and in
> case of DRP, I have the Offsite Tapes of the Filer.
My backuppc archive currently fits on a single 250 gig drive which I
mirror to an external firewire drive with Linux software raid and
swap periodically. I'm not happy with the Linux firewire/raid handling
but it works well enough to complete a sync and will probably be
fixed eventually.
> My dream would be to have my servers backed-up using BackupPC with a remote
> BackupPC as failover in case of DRP. That would greatly reduce tape usage as
> I would avoid daily tape incrementals, I would reduce tape usage beacause of
> single instance storage and I wouldn't need offsite storage anymore (full
> tape bacups would only be used for long term archiving).
I'm still running amanda for some tapes that are cycled offsite but I
haven't restored from that in years and hope never to have to. I can
plug one of the external drives into my laptop and have instant access
to anything (slightly old...) from backuppc,
--
Les Mikesell
[EMAIL PROTECTED]
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