Can other readers share what your NUMBER and SIZE_DATA_BUFFERS are in
/usr/openv/netbackup/db/config?

My master server is a Sun 450, 1 GB RAM, 2x 400 MHz processing. 
Shared Memory MAX is set to 1GB in /etc/system. Six tape drives.

I recently noticed my backups were going pretty slow and I realized I
didn't have these two files in place, thus I was using the default
8x32KB buffers. I remembered from my NetBackup class that almost
everyone increases the size of the buffers and usually decreases the
numbers, but maintains a great increase in the total size of the
buffer (size times number).

I tried 4 buffers 1048576 bytes (2^20 = 1 MB) big. I noticed a
speedup in backups, but some NT clients started throwing errors.

Most of the errors are 174, a media manager error, which doesn't make
a lot of sense; and a few error 41 (network connection timeout).

But I haven't fully diagnosed the errors net in the log files. I'm
more interested in what other installations use for the buffer settings.

=====
Jim VandeVegt
vandevegt AT yahoo DOT com vandevegt AT avaya DOT com
http://members.xoom.com/vandevegt
Toilet paper should come off the front!

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