backing up commercial apps

2002-09-21 Thread Neil

Good day guys, 

What is amanda's approach to backup commercial software like Microsoft 
Exchange 5.5 mail server? It's because in Exchange, they have this public 
store and private store files. Commercial backup such as BackupExec can 
backup/restore each mailboxes via agents. 

Will there be any future path that Amanda is looking into? Or is Amanda is 
just really looking into perfecting back up of unix filesystem? I also heard 
that backing up registry of the Windows Oses is a bit crappy at the moment. 

Any comments will be greatly appreciated. 

Thanks so much again. 

Ronneil



Re: backing up commercial apps

2002-09-21 Thread Jon LaBadie

On Sat, Sep 21, 2002 at 07:44:31AM -0500, Neil wrote:
 Good day guys, 
 
 What is amanda's approach to backup commercial software like Microsoft 
 Exchange 5.5 mail server? It's because in Exchange, they have this public 
 store and private store files. Commercial backup such as BackupExec can 
 backup/restore each mailboxes via agents. 
 
 Will there be any future path that Amanda is looking into? Or is Amanda is 
 just really looking into perfecting back up of unix filesystem? I also 
 heard that backing up registry of the Windows Oses is a bit crappy at the 
 moment. 
 Any comments will be greatly appreciated. 


First, amanda doesn't backup anything.  It manages backups.

Using your terminology from above, amanda uses agents to do the
actual backing up.  The common agents that amanda uses are gnutar
and various unix dump-style programs.

Amanda was developed on unix, with no intention to deal with
non-unix systems.  IIRC, the only reason that amanda started 
doing windows (pun intended) was that the freeware package,
samba, included a gnutar-like capability, which could pull
files from a windows host to a unix host.

As a manager, amanda just schedules and runs these agents.
Any capabilities and particularly any deficiencies, are those
of the agents.

For example, gnutar, backing up unix systems has undesireable
affects on file time stamps.  Dump-style programs have limitations
of only doing incrementals on entire file systems.  Samba has
limitations of ...

You get what you pay for.

-- 
Jon H. LaBadie  [EMAIL PROTECTED]
 JG Computing
 4455 Province Line Road(609) 252-0159
 Princeton, NJ  08540-4322  (609) 683-7220 (fax)



Re: backing up commercial apps

2002-09-21 Thread Mitch Collinsworth


On Sat, 21 Sep 2002, Neil wrote:

 What is amanda's approach to backup commercial software like Microsoft
 Exchange 5.5 mail server? It's because in Exchange, they have this public

Jon's reply is a good description of amanda itself.  Haven't checked
into it yet but I've heard there's another project at sourceforge
that's working on a native windows client for amanda.  It may well be
better than doing the samba thing.

 Will there be any future path that Amanda is looking into? Or is Amanda is
 just really looking into perfecting back up of unix filesystem? I also heard
 that backing up registry of the Windows Oses is a bit crappy at the moment.

Well as Jon pointed out amanda isn't perfecting any filesystem's backup.
That's the filesystem maintainer's job.  Amanda just wants to make it
easier for you to run backups so you can spend more time doing something
else.  Those of us wanting to backup fs's and db's that amanda doesn't
already do are building bridges between amanda's architecture and the
backup tools used by the things we want to backup.

Registry backup is a challenge for most windows backup schemes.  There
is a tool somewhere (sorry, don't recall the name) that will snapshot
the registry into a quiescent file.  If you want to get a good backup
of the registry, find this tool and schedule it to run before your
backup starts.  Then backup the registry dump file.  This is pretty much
the same scheme used to backup most any database regardless of OS.

-Mitch