You might also take a look at your NTFS size... there is
a known NT performance problem (and fix from Redmond) when
you use large disk drives --- check out the knowledge base
at Microsoft, if you're using large (aka, > 9GB) drives.


Don France

Technical Architect, P.A.C.E.
San Jose, CA
mailto:dfrance AT pacbell DOT net
PACE - http://www.pacepros.com
Bus-Ph:   (408) 257-3037



> -----Original Message-----
> From: Nathan King [mailto:nathan.king AT USAA DOT COM]
> Sent: Wednesday, December 08, 1999 9:39 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: long backup time
>
>
> What about the client?
>
> What's the CPU utli % on the client.
>
> Generally on NT anything higher than 70% shows that your CPU
> is somewhat
> constrained.
>
> I've seen significant performance improvements when backing
> up filesystems
> of this type when the client has more cpu horsepower and a faster disk
> subsystem.
>
> The fact that you are getting such a high cache hit rate
> would suggest that
> your ADSM server is performing quite well.
>
> Part of the bottleneck also lies with the NTFS filesystem,
> it's not exactly
> the fastest of filesystems.
> I'd be interested to see if anyone has done a comparison
> between FAT and
> NTFS filesystems in a scenario such as this. That's not a
> suggestion to
> start implementing fat filesystems just a peek at what sort
> of performance
> difference there is.
>
> Nathan
>
>
>
>
>         -----Original Message-----
>         From:   Michael Hack [SMTP:hackmich AT MAINSTOR DOT DE]
>         Sent:   Wednesday, December 08, 1999 10:54 AM
>         To:     ADSM-L AT VM.MARIST DOT EDU
>         Subject:        long backup time
>
>         The ADSM for NT version is 3.1.2.40, the NT client is 3.7.
>
>         I make an incremental backup for the client.
>
>         In the dsmsched.log appears for example:
>
>         12/08/1999 02:53:14 ANS1898I ***** Processed
> 164,000 files *****
>         12/08/1999 02:53:47 ANS1898I ***** Processed
> 164,500 files *****
>         ...
>         12/08/1999 03:29:05 ANS1898I ***** Processed
> 211,000 files *****
>         12/08/1999 03:29:12 ANS1898I ***** Processed
> 211,500 files *****
>
>         ADSM checks 700,000 files on this client and backup 4
> GB and needs
> more
>         then 8 hours!
>
>         The 100 Mbit/s Network is not the bottleneck. The
> selective backup
> with
>         ADSM is much faster.
>
>         The Cache Hit Pct. from the database is over 99.
>
>         Does anybody else have a fileserver with so many
> files and is this
> backup
>         time normal for ADSM/NT or what can I try?
>
>         Michael
>