Hi Terese,

You do not mention your hardware platform and disk subsystem but it worth
checking out the I/O performance. We had a sudden increase in elapsed backup
time, which turned out to be nothing to do with NB, but through-put on the
our Hardware RAID had dropped off.  The battery within our hardware RAID
subsystem (Sun A3500) controller expired. This resulted in write cache being
suspended. Write cache had to be re-enabled.  On another occasion, replacing
a faulty drive in the A3500, resulted in LUN's being reconfigured which had
caused a cascade affect where controller and LUN balancing exercise was
required.

Regards Alastair Thorpe.


> -----Original Message-----
> From: Terese Pelletier [SMTP:terese.pelletier AT kodak DOT com]
> Sent: Monday, March 05, 2001 3:01 PM
> To:   veritas-bu AT mailman.eng.auburn DOT edu
> Subject:      [Veritas-bu] Backups very slow
> 
> All,
> 
> We are having a problem with our backups running extremely slow.  This
> just occurred about two weeks ago.  The only change we have made is that
> the amount of data on one of the servers went from 2gb to 140gb.  This
> shouldn't be a problem and we do have larger servers.
> 
> For example.  Our largest server has ~367gb of data and is also the
> netbackup slave with the tape library.  It used to backup in about 24
> hours or so.  It currently has been running 60 hours and has only backed
> up 347gb.
> 
> There are no errors in the logs.  We have verified that there are no
> network issues.
> 
> We are currently running NB 3.1.1ga (waiting for software to go to 3.4).
> 
> Any ideas?
> 
> Thanks,
> Terese
> -- 
> Terese Pelletier               |Internet: terese.pelletier AT kodak DOT com   
>  
> Eastman Kodak Company          |Phone: 716-477-1316             
> Room 6636, Bldg 69, KRL        |Pager: 716-253-7239             
> Rochester, NY 14650-1925       |Fax:   716-477-0127