* John R. Jackson <[EMAIL PROTECTED]> (Mon, Jul 30, 2001 at 05:04:47PM -0500)
> >Does anyone know if that puppy is supported by amanda ?
> If it's SCSI, Amanda can do it (or it should be able to so we'll make it).
It is,
the thing is that it's a taperobot/tapechanger, and I remember reading
discussions that getting that to work is not always a trivial issue.
And Ill likely only have a week to set it all up (and do a whole lot more)
so I'd prefer not to have to spent too much time tinkering with the scsi
changer configs ;)
>>Does anyone have any recommendations for backing up this amound of data ?
> Just a couple of general theories:
> * Make sure no one "disk" (disklist entry) gets out of line.
> Ignoring the tape overflow issue, it would still be a bad thing
> to have 1.9 TBytes of your 2.0 TBytes in one file system. The day
> Amanda decides to do that full dump during the dumpcycle is going
> to be bad every time it rolls around (we have one config like that
> here and it's a nuisance).
Hence gnutar and calcsize ;)
seriously, it's gonna be a bunch of linux boxes each with 100 - 150G of
diskspace (2 IDE drives of 50 - 75G)
> * Extend your dumpcycle so Amanda can spread the full dumps out.
> Yes, that means more tapes.
> * Run in parallel (yes, more drives and more tapes). We backup up
> well over 2 TBytes and this (plus a 28 day dumpcycle) is how we
> survive.
What kind of tapedrives do you use ?
> If you don't have enough clients (i.e. they are silly enough to put
> the whole 2 TBytes on a single server), I have a minor patch to let
> more than one amandad run at a time so you can have multiple tape
> servers working at the same time.
Do you need a patch for that ?
Im running 3 amandads on the same machine every night
(all 3 to different tapedrives ), and each client is running multiple
clients (or at least can run ) at the same time.
> * Do the math :-). You're familiar with Amanda and know how it behaves.
> Write up some scenarios for splitting up the data and do rough
> estimates of the timing. Then play with the variables (dumpcycle,
> holding disk space, number of configs, drive speed, etc).
Yes,
I'll have to do that anyway
Ill need to make a cost/benefit analysis of the various scenarios .
Gerhard, <@jasongeo.com> == The Acoustic Motorbiker ==
--
__O If your watch is wound, wound to run, it will
=`\<, If your time is due, due to come, it will
(=)/(=) Living this life, is like trying to learn latin
in a chines firedrill
