Amanda or Bacula

[Mike Hogsett]

Yes!  For amanda, the tape must be able to store the compressed dump file
on one tape.

Worst case scenario is that the 120 Gbyte partition is filled with
uncompressable data making the dump file 120Gbytes.  Amanda will need a
tape drive which is capable of storing that on one tape.

 - Mike


> So to clarify just so that I understand correctly:
> 
> 1.  Each filesystem per system to be backed up qualifies as a dumpfile.
> 2.  Multiple dumpfiles per backup
> 3.  Multiple tapes per backup, as long as 1 dumpfile isn't larger than the
> tape.
> 
> One of my systems has a 120 gig drive with about 36gigs (and growing) of
> people's images, documents, etc on it (samba server).  My single tape drive
> is only 20 gigs.  I am assuming this will be a problem for Amanda unless I
> get a bigger tape drive.
> 
> Sincerely,
> 
> Rick Duvall
> ----- Original Message ----- 
> From: "Mike Hogsett" <hogsett at csl.sri.com>
> To: "Rick Duvall" <rduvall at onlinehighways.net>
> Sent: Tuesday, October 14, 2003 10:23 AM
> Subject: Re: Amanda or Bacula
> 
> 
> >
> > > Is this a choice of personal preference, or does one actually work
> > > better than the other in my scenario?
> >
> > I replied earlier to someone else regarding what I do here for backups.
> >
> > My recommendation is to use amanda.  Mostly due to its maturity.  Amanda
> > can use multiple tapes (via a changer or multiple drives), but a single
> > dump file can not span two tapes (this is rarely a problem).
> >
> >  - Michael Hogsett
> >
> > Below is my response Stephane's question.
> >
> > > Date:    Tue, 14 Oct 2003 09:49:22 PDT
> > > To:      "Stephane Raimbault" <segr at hotmail.com>
> > > cc:      questions at freebsd.org
> > > From:    Mike Hogsett <hogsett at csl.sri.com>
> > > Subject: Re: Backup Solutions
> > >
> > > > I am curious as to what people using FreeBSD use for a Backup
> Solution.  Are
> > > > there any Comercial software available for Tape Backup Solutions that
> run wel
> > > > l on FreeBSD?
> > > >
> > > > I'm looking at using a Dell PowerVault 110T LTO tape drive and was
> looking fo
> > > > r software to utilize to backup the 10 servers and growing in my
> server farm.
> > >
> > > I use amanda (/usr/ports/misc/amanda-*) on a Dual Xeon 2.8 Ghz machine
> w/
> > > 2Gbytes of RAM running FreeBSD 4.8.  The machine contains a 3ware ATA
> RAID
> > > card with 6 120Gbyte disks attached and concatinated into a single
> volume
> > > and is used for temporary holding space for the dump files.  The tape
> and
> > > tape changer device is a Dell PowerEdge 122T with an LTO tape drive
> > > connected via an Adaptec SCSI controller.  I use `mtx'
> > > (/usr/ports/misc/mtx) to control the tape changer.  To top it off the
> > > machine interfaces to the network using an Intel 1000baseSX ethernet
> over
> > > fiber network card which is sub-interfaced using VLANs onto all of the
> > > subnets in our switch infrastructure (this means backup traffic doesn't
> > > hit the router).
> > >
> > > This machine backs up approximately 200Gbytes per night.  This consists
> of
> > > 157 partitions accross 64 hosts.  The hosts are a combination of
> Solaris,
> > > Linux, FreeBSD, DEC (OFS/1), and AIX machines.  I get level zero dumps
> of
> > > each partition every 4 days and sometimes more frequently.
> > >
> > > Backups start at 7PM and typically run for about 6 to 8 hours.
> > >
> > > Hope that helps.
> > >
> > >  - Michael Hogsett
> >
> >