Storage Unit - 

Storage Unit Name - NDMP
Storage Unit Type - NDMP
Storage Device - TLD(0) - HCART 3
Media Server - (it is our master server)
Maximum Current Write Drives -2 
Reduve fragment size is unchecked. 

The master/media server is Win2k3 - SP1

The tape drives that are attached are HP Ultrium 3 drives.

New VX Logs - I am not quite sure what those are, but we have enabled
robust logging on the master server. I will try disabling the logging
and see if speeds improve at all.


Regards,

-cj
Courtenay Jones
SBS Unix Admin


-----Original Message-----
From: Len Boyle [mailto:Len.Boyle at sas.com] 
Sent: Monday, November 27, 2006 9:23 PM
To: Jones, Courtenay; Veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Netbackup 6.0/Windows Master Server/NDMP/LTO3

Hello Courtenay,

A few questions. 

Which storage unit, with what os and what os level are you using for the
NDMP backups? Is the tape drive, of which make and model, attached to
the storage unit

What level do you have the new vx logs set to?

We found out the hard way that a high debug level with the new vx logs
can cause an extreme slow down of NDMP backups running on netapp R200's.
The larger the file count, small files are worst. 
A NDMP backup of a few heavy files will not slow down.


There are other reasons for a slow down. 

One test that you can run, is to run the ndmp backup on the storage unit
without netbackup. This helps one know if the storage unit/tape system
are having the problem or if it is netbackup/networking etc issues. 

len

-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Jones,
Courtenay
Sent: Monday, November 27, 2006 11:46 AM
To: Veritas-bu at mailman.eng.auburn.edu
Subject: [Veritas-bu] Netbackup 6.0/Windows Master Server/NDMP/LTO3

We are currently deploying Netbackup 6.0. We are working on optimizing
on our NDMP backup. We currently have a Windows 2003 master server
performing the NDMP backups to a HP ESL 712 (LTO 3 drives). Our write
rates are currently only about 70 MB/s. Can anyone make suggestions for
trying to increase write speeds to tape?


Regards,

-cj
Courtenay Jones
SBS Unix Admin


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