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[Veritas-bu] improving backup speed on NT backups

2000-11-14 16:02:27
Subject: [Veritas-bu] improving backup speed on NT backups
From: Bob Bakh bbakh AT veritas DOT com
Date: Tue, 14 Nov 2000 13:02:27 -0800 
Simply put
NO

But you can manipulate them from the NetBackup Configuration GUI on the NT
administrator interface.

Bob

-----Original Message-----
From: W. Curtis Preston [mailto:curtis AT colltech DOT com]
Sent: Tuesday, November 14, 2000 12:12 PM
To: David A. Chapa; Bob Bakh; Keahey, Ricky L; Long, Matt;
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] improving backup speed on NT backups


What about all the other registry settings on NT?  Is there any way to use 
the standard bp.conf file to set options like these?  (Like the OTM 
entries, for example.)

At 10:43 AM 11/14/00 -0600, David A. Chapa wrote:
>no, actually you don't have to put it in the registry, but just as the Unix
>product, you can put it in veritas\netbackup\db\config.
>
>Since I am a fan of consistency (and hate modifying my Operations Manuals),
>I prefer to stay out of the registry as much as possible.
>
>The default, 4 buffers at 64K typically is sufficient.  However, I have
>found at one of my client's that the server was having a hard time filling
>up the buffers, and as a result I was seeing network timeout, etc.
>
>My solution was to increase the number of buffers to 8 and reduce the size
>to 32K.
>
>This has had very positive results for all machines in the NT domain.
>
>David Chapa
>DataStaff, Inc.
>
>
>-----Original Message-----
>From: veritas-bu-admin AT Eng.Auburn DOT EDU
>[mailto:veritas-bu-admin AT Eng.Auburn DOT EDU]On Behalf Of Bob Bakh
>Sent: Tuesday, November 14, 2000 10:20 AM
>To: David A. Chapa; Keahey, Ricky L; Long, Matt;
>veritas-bu AT mailman.eng.auburn DOT edu
>Subject: RE: [Veritas-bu] improving backup speed on NT backups
>
>
>actually it's
>
>\HKEY_Local_Machine\SOFTWARE\VERITAS\NetBackup\CurrentVersion\Config
>
>add a new string
>
>SIZE_DATA_BUFFERS with the value in bytes maximum 65536 because NT only
>allows 64k buffers
>
>NUMBER_DATA_BUFFERS I usually keep it a power of 8, 1,2,4,8,16,32,64
>
>but I'm anal
>
>Bob
>
>-----Original Message-----
>From: David A. Chapa [mailto:david AT datastaff DOT com]
>Sent: Friday, November 10, 2000 8:10 AM
>To: Keahey, Ricky L; Long, Matt; veritas-bu AT mailman.eng.auburn DOT edu
>Subject: RE: [Veritas-bu] improving backup speed on NT backups
>
>
>\veritas\netbackup\db\config\SIZE_DATA_BUFFERS
>and NUMBER_DATA_BUFFERS
>
>do not have any trailing spaces in these files, no comments, etc.
>
>Here is the technote on the two parameter files
>
>http://seer.support.veritas.com/docs/183702.htm
>
>
>David
>
>-----Original Message-----
>From: Keahey, Ricky L [mailto:ricky.l.keahey AT intel DOT com]
>Sent: Friday, November 10, 2000 10:00 AM
>To: 'David A. Chapa'; Long, Matt; veritas-bu AT mailman.eng.auburn DOT edu
>Subject: RE: [Veritas-bu] improving backup speed on NT backups
>
>
>I am having this same issue except it is in a SAN environment and some of
my
>media servers.  I have been looking for the place to change these settings,
>but can't find them.  Can you point me in the right direction.  I have a
>total NT environment.
>
>Thanks,
>Rick
>
>-----Original Message-----
>From: David A. Chapa [mailto:david AT datastaff DOT com]
>Sent: Friday, November 10, 2000 7:29 AM
>To: Long, Matt; veritas-bu AT mailman.eng.auburn DOT edu
>Subject: RE: [Veritas-bu] improving backup speed on NT backups
>
>
>Matt:
>
>Create /usr/openv/netbackup/logs/bptm on your media server that is backing
>up your NT machines
>
>Run some test backups and review this log.
>
>You will want to look for a line
>
>waited for full buffer
>
>-or-
>
>waited for empty buffer (this **MAY** mean an increase in data buffers
could
>be used)
>
>this will let you know how long it waited for a buffer to be filled prior
to
>writing to tape.
>
>If there are considerable delays you may want to investigate the network
>between your media server and your NT clients.  Typical problems are
>AUTO-NEGOTIATE on your NT machines and AUTO-NEGOTIATE on switches in the
>closet.  If all of that checks out, and you still aren't satisfied with the
>results, you **MAY** want to look at the NUMBER_DATA_BUFFER and
>SIZE_DATA_BUFFERS config options for tuning your performance.  Please keep
>in mind, that  you want to make sure that you don't adversely affect you
>current clients.  Believe it or not, in the most recent NT environment that
>I have been architecting, I found that I needed to reduce the SIZE of the
>databuffer and increase the NUMBER of the data buffers.  This seems to have
>increased the speed, I need to follow up with my client to review the
actual
>results but the preliminary numbers looked good.
>
>Just my two cents worth
>
>David
>
>-----Original Message-----
>From: veritas-bu-admin AT Eng.Auburn DOT EDU
>[mailto:veritas-bu-admin AT Eng.Auburn DOT EDU]On Behalf Of Long, Matt
>Sent: Thursday, November 09, 2000 11:07 AM
>To: veritas-bu AT mailman.eng.auburn DOT edu
>Subject: [Veritas-bu] improving backup speed on NT backups
>
>
>Hello,
>
>         Does anyone know how to improve network performance for NT client
>backups?  Currently,  I am seeing about 4 to 5 mps per second on my UNIX
>servers but I am only seeing lass than a 1 mps for my NT systems.  Any
>recommendations out there for this scenario?  Thanks
>
>1       nt_filesystem   nt_incrimental nodename         master_server
>87538   100%    200.075 11/08/2000 5:09:24 PM   00:09:37        11/08/2000
>5:19:01 PM
>
>Matt Long
>Systems Administration
>Marriott International
>301-696-2690
>
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---
W. Curtis Preston, Principal Consultant at Collective Technologies
Email: curtis AT colltech DOT com                (Best way to contact me)
Work : 408 452 5555                       (Leave a message.)
Pager: 800 946 4646, pin#1436065        (If urgent.)

Tap into the Collective Intellect (TM): http://www.colltech.com
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