[Veritas-bu] Clarification - Policies
2006-08-29 17:15:36
Subject: |
[Veritas-bu] Clarification - Policies |
From: |
JMARTI05 at intersil.com (Martin, Jonathan (Contractor)) |
Date: |
Tue, 29 Aug 2006 17:15:36 -0400 |
I setup two identical policies on my master server TEST1 and TEST2 and
pointed them at one of my Linux servers, at a specific test directory
/test. I then touched two files, test1 and test2 in that directory and
fired off TEST1 w/ a FULL. It backed up both files. The, without
modifying these files I fired off the TEST2 policy with the same
selection list but an incremental. Theoretically if it was using the
same date/time stamp for the last "full" it shouldn't backup these two
files again. Unfortunately it did, so it would appear that the
date/time stamp method used by NBU is policy specific?
Can anyone confirm?
-Jonathan
-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Darren
Dunham
Sent: Tuesday, August 29, 2006 3:39 PM
To: Veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Clarification - Policies
> The archive bit which the full and differential backups clear is a
> facility of the file system. Whether you are running NTFS or EXT3 the
> archive bit is kept per file at the file system level.
I have never heard of ext3 (or any unix filesystem) with an archive bit.
Did you mean NTFS and FAT?
> It doesn't
> matter WHAT backup software you use to clear the archive bit,
> incremental backups will only backup files with the archive bit set
> and fulls will backup EVERYTHING. The only difference is that full
> and differential backup RESET the archive bit if it is set.
> Essentially, anytime you change a file (open it, save it) the archive
> bit gets set to "1" or "please back me up." When a full or
> differential backup comes along it backs up the file and clears the
> archive bit. This really has nothing to do with Netbackup or
> policies. You can run simple backups via windows backup and it still
> uses the same archive bit. At one point I was using WinZip to clear
> archive bits and rub remote backups while a tape library was down.
Or you can ask netbackup to not use the archive bit.
--
Darren Dunham ddunham at taos.com
Senior Technical Consultant TAOS http://www.taos.com/
Got some Dr Pepper? San Francisco, CA bay area
< This line left intentionally blank to confuse you. >
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