Our full on this server ran on Friday-Saturday and is a valid backup, at
least according to the db.  On the 26th, the backup of the drive in
question contained roughly 96.86 GB in 564266 files.  The
differential-incrementals from the days since:

28th: 195661 files, 69.63 GB
29th: 202196 files, 69.51 GB
30th: 199555 files, 71.47 GB 

Realistically, it's highly unlikely that we have a delta of 72% per day
for the first two, and a delta of 74% the third (in terms of capacity).
34% files delta between full and day one of D-I, 36% day 2 and 35% day
three.  Has anyone experienced a delta that high in
differential-incrementals?  It seems quite high.

Jason

> -----Original Message-----
> From: veritas-bu-bounces at mailman.eng.auburn.edu 
> [mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf 
> Of WEAVER, Simon
> Sent: Thursday, August 31, 2006 1:55 AM
> To: Brooks, Jason; veritas-bu at mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] Archive bit and disk defrag tools
> 
> 
> Jason
> Its possible unless the full backup did not fully complete 
> before the differential/Incr was being done.
> 
> Regards
> 
> Simon Weaver
> 3rd Line Technical Support
> Windows Domain Administrator 
> 
> EADS Astrium Limited, B23AA IM (DCS)
> Anchorage Road, Portsmouth, PO3 5PU
> 
> Email: Simon.Weaver at Astrium-eads.net
> 
> 
> 
> -----Original Message-----
> From: Brooks, Jason [mailto:brooksje at longwood.edu]
> Sent: 30 August 2006 14:07
> To: veritas-bu at mailman.eng.auburn.edu
> Subject: [Veritas-bu] Archive bit and disk defrag tools
> 
> 
> Folks,
>       Have you ever experienced a defrag utility resetting the archive
> bit?  It appears that we may.  We had a server last night 
> backup about 95%
> of it's file store on it's internal disk (defragged by 
> diskkeeper) while a
> SAN drive backed up about 5% (not managed by diskkeeper).  
> This was all on a
> Differentil-Incermental schedule.  The client is set to use 
> the archive bit
> for differentials, so we're wondering if diskkeeper may have reset the
> archive bit, or actually set it on numerous files, on defrag. 
>  Also, the
> defrag would have ran in-between backups.
> 
> Jason
> 
> ------------
> Jason Brooks
> Computer Systems Engineer
> IITS - Longwood University
> voice - (434) 395-2916
> fax - (434) 395-2035
> mailto:<brooksje at longwood.edu> 
> 
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