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Date:      Tue, 25 Jul 2000 10:22:37 -0700 (PDT)
From:      Linh Pham <lplist@q.closedsrc.org>
To:        "Jason C. Wells" <jcwells@nwlink.com>
Cc:        Meagan Jia Pi <meagan@e-lingo.com>, freebsd-questions@FreeBSD.ORG
Subject:   Re: Backup Solution
Message-ID:  <Pine.BSF.4.21.0007251016110.5286-100000@q.closedsrc.org>
In-Reply-To: <Pine.SOL.3.96.1000725101459.17523B-100000@utah>

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On Tue, 25 Jul 2000, Jason C. Wells wrote:

> On Tue, 25 Jul 2000, Meagan Jia Pi wrote:
> 
> > Currently I am only doing backups using DLT 7000 on critical machines
> > (AIT seems better with bigger capacity and cheaper price?), as you know,
> > it will become a big problem as the company grows or when I make a false
> > judgment on which machines are critical.  Scalability and reliability
> > are very important to us.  Using jukboxes seems to be a very good
> > solution. Has any of you have experience with using juckboxes?
> 
> I would use amanda no matter what hardware I chose. To be fair I do not
> know about commercial solutions that may exist. Also, if you have a slow
> link anywhere in between your hosts a networked backup solution may be
> problematic.
> 
> With Amanda's scheduling capability you might even find that a robot is
> not really necessary, depending on your total disc usage among all hosts.
> E.g.  Assuming a week long dump cycle with a 70GB DLT with hardware
> compression you could handle 490 GB (minus a fudge factor) of allocated
> disc.
> 

Autoloaders are handy if you have to backup a lot of storage and need to
span across multiple tapes (and don't want to babysit the backup). But if
you don't have a lot of stuff to back up, or if the data is highly
compressible, a standard tape drive should be fine.

If redundancy is crucial, you may want to install a tape drive in each
machine. This will reduce the need to backup across the network and in
case one drive goes down, you can use another drive in the other machine
to do a network backup. The downside to this method is the higher up-front
cost.

For our datacenter, we have a 22-slot DLT IV autoloader connected to a
Windows 2000 machine (shh! I know, I know!!!) using Veritas Backup
Exec. It works great for our Windows servers, but doesn't work with the
BSD servers that run Samba.

// Linh Pham
// http://closedsrc.org



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