<html><div style='background-color:'><P>Hi there,</P>
<P>I am facing a problem that a significant performance degrade on backup with
NetBackup (4.5 GA) after installed Veritas Volume </P>
<P>Manager 3.2 on a Solaris box with DTL backup drive directly connected.</P>
<P>The problem doesn't occur only on a RAID 5 volume but on regular volume too.
</P>
<P>I duplicated a same set of data which in total size 111,119,520 kbytes with
2885449 files in a RAID 5 volume and regular </P>
<P>volume respectively, here are the backup results:</P>
<P>-- RAID 5 vol.: elasped time 14:34:46, thoughput 191 KB/Sec</P>
<P>-- Regular vol.: elasped time 16:11:44, thoughput 212 KB/Sec</P>
<P>Before installing VM, the backup throughput is about 3 to 5.5 MB/Sec.</P>
<P>I read this TechNote <A
href="http://seer.support.veritas.com/docs/240607.htm";>http://seer.support.veritas.com/docs/240607.htm</A>
and have done the suggested configuration but no </P>
<P>improvement at all. It even spent longer backup time (17:32:57).</P>
<P>Any idea is welcome.</P>
<P>Regards,<BR>Chadwick Leung</P>
<P><BR><BR><BR> </P>
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