Veritas-bu

[Veritas-bu] Archive bit and disk defrag tools

2006-08-31 10:29:07
Subject: [Veritas-bu] Archive bit and disk defrag tools
From: simon.weaver at astrium.eads.net (WEAVER, Simon)
Date: Thu, 31 Aug 2006 15:29:07 +0100
Jason
Yes I have, when the full appears to have completed, when in fact it did not
!

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: 31 August 2006 15:06
To: WEAVER, Simon; veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Archive bit and disk defrag tools


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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This email is for the intended addressee only.
If you have received it in error then you must not use, retain, disseminate or 
otherwise deal with it.
Please notify the sender by return email.
The views of the author may not necessarily constitute the views of Astrium 
Limited.
Nothing in this email shall bind Astrium Limited in any contract or obligation.

Astrium Limited, Registered in England and Wales No. 2449259
Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England