Veritas-bu

[Veritas-bu] Brick-level Exchange Backup Performance

2003-10-07 08:33:24
Subject: [Veritas-bu] Brick-level Exchange Backup Performance
From: apearce AT kforce DOT com (Pearce, Andrew W.)
Date: Tue, 7 Oct 2003 08:33:24 -0400
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I'm using NBU 4.5 FP5 and trying to perform mailbox backups of Exchange 5.5.
The IS is about 150GB and both the Exchange server and NBU media server are
on 1Mb Ethernet.  Tape library is sporting LTO1 drives.  Regular IS/DS
Exchange backups run around 15000KBps (yeah, still trying to squeeze more
out). Mailbox backups run at only 400KBps, and often error out with a 41. 

 

 I have tried breaking up the file list to backup mailboxes alphabetically
(all the A's, then all the B's...) but jobs still die with a 41 when I get
to the Wheel of Fortune letters (R, S, T, L, N, E...).  I have tried
multistreaming several letters at once, I have tried one at a time, and I
have tried one big fat job, but they always run really slow and often throw
41's.

 

Has anybody had similar issues?  Overcome them?

 

Thanks!

 

Andrew


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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>I'm using NBU 4.5 FP5 and trying =
to
perform mailbox backups of Exchange 5.5.&nbsp; The IS is about 150GB =
and both
the Exchange server and NBU media server are on 1Mb Ethernet. =
&nbsp;Tape library
is sporting LTO1 drives. &nbsp;Regular IS/DS Exchange backups run =
around 15000KBps
(yeah, still trying to squeeze more out). Mailbox backups run at only =
400KBps,
and often error out with a 41. <o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>&nbsp;I have tried breaking up the =
file
list to backup mailboxes alphabetically (all the A's, then all the =
B's...)
but jobs still die with a 41 when I get to the Wheel of Fortune letters =
(R, S,
T, L, N, E...).&nbsp; I have tried multistreaming several letters at =
once,
I have tried one at a time, and I have tried one big fat job, but they =
always
run really slow and often throw 41's.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Has anybody had similar =
issues?&nbsp;
Overcome them?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Thanks!<o:p></o:p></span></font></p=
>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Andrew<o:p></o:p></span></font></p>=


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