Slow Backups

[metcalfep]

Trying to backup a 270GB file Server using a Windows 2003 media server Netbackup v4.5 FP_5
In-Line duplication is in use

Master Server is a SUN Server running Sunos 5.8
Master server is running v4.5 FP_5
Client is running v4.5 FP_5

Client Server is Windows NT4 SP6a
Compaq Proliant 6500 2 x Pentium Pro , 512MB RAM
Mcafee anti-virus is running
Server is 270GB with 8GB free
700,000 files

All Veritas performance tuning recommendations have been applied

SIZE_DATA_BUFFERS 65536
NUMBER_DATA_BUFFERS 128
NUMBER_BUFFER_SZ 132096

Communications buffers on the clients have been set to 129
VSP has been disabled

Servers Network card, Cisco Switch, Master and Media Server are all using 100MB/Full Duplex

Arcserve backs up the same server at a rate of 3500 kb/sec (210MB/Minute
Veritas Backups are very slow approx 1000KB/sec (60MB/Minute)

Arcserve backs up fine, Veritas does not any ideas why?

Suggestions so far
Fragmented hard disk
Anti virus running

Why does Arcserve backup at a resonable speed and Veritas netbackup does not?

 

[comtec17]

Turn off anti-virus before the backup.

 

[metcalfep]

I am not allowed to turn off the anti-virus

Anyhow Arcserve backs the server up with the Anti-virus turned on why can't Veritas Netbackup

 

[metcalfep]

I think I have found the problem

Veritas Netbackup does not like backing up small files
The server in Question as directories of 50MB with 3000 files inside all of 1K in size

To Fix:
Exclude that directory from the Main Policy
Create a new Policy with the excluded directory in it and Multi-stream that directory - this way for example six files will be written six at once and as one finishes another will start