Veritas-bu

[Veritas-bu] Exchange

2002-04-10 08:14:48
Subject: [Veritas-bu] Exchange
From: JR.Redelinghuys AT mgxgroup DOT com (JR Redelinghuys)
Date: Wed, 10 Apr 2002 14:14:48 +0200
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Hi
=20
We upgraded 1 x NT master server and 3 x NT media servers from NBU 3.2 =
to NBU 3.4.1 with patch 341_2. The exchange database extention was also =
installed before the patches. We created exchange backups - database =
backups & mailbox backups.
=20
The following was implemented on the master and/or media servers:
1. SIZE_DATA_BUFFERS - 65536
    NUMBER_DATA_BUFFERS - 32
    NUMBER_DATA_BUFFERS_RESTORE - 32
2. DISABLE_RESOURCES_BUSY
3. Fragment size of 2000 on the storage units.
4. LTO standalone tape drives ( 1 per media server )
=20
The problem is that we are getting 10 m/s throughput on the database =
backup but only 1 or 2 m/s throughput on the mailbox backups.=20
We also only got 28 gig on a 100 gig LTO tape (that should give us 200 =
gig compressed) before it asked for another tape. We did a bpexpdate on =
the tape before we used the tape.
=20
Some errors we found in the all logs entry - FS_ACCESS_DENIED /  =
FS_OBJECT_CORRUPT. Would these errors course the backup to run slower ? =
We did give the technotes on these errors to the exchange administrator.
=20
What else can we look at to increase the backup speed of the mailboxes?

JR Redelinghuys=20
MGX - Software Engineer=20
Tel  - +27 82 459 1091=20
(W) - +27 11 695 2191=20
(H)  - +27 11 976 1212=20

 =20

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Diso-8859-1">
<TITLE>MGX Stationery</TITLE>

<META content=3D"MSHTML 5.00.3103.1000" name=3DGENERATOR>
<META content=3DFrontPage.Editor.Document name=3DProgId></HEAD>
<BODY aLink=3D#000000 background=3Dcid:621414111@10042002-34ee =
link=3D#000000=20
style=3D"BACKGROUND-POSITION: right top; BACKGROUND-REPEAT: no-repeat; =
COLOR: #000000; FONT-FAMILY: Arial; FONT-SIZE: 10pt; MARGIN-LEFT: 20px; =
MARGIN-TOP: 125px"=20
vLink=3D#000000>
<DIV><SPAN class=3D621414111-10042002>Hi</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D621414111-10042002>We upgraded 1 x NT master server =
and 3 x NT=20
media servers from NBU 3.2 to NBU 3.4.1 with patch 341_2. The exchange =
database=20
extention was also installed before the patches. We created exchange =
backups -=20
database backups &amp; mailbox backups.</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D621414111-10042002>The following was implemented on =
the master=20
and/or media servers:</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002>1. SIZE_DATA_BUFFERS - =
65536</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002>&nbsp;&nbsp;&nbsp; =
NUMBER_DATA_BUFFERS -=20
32</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002>&nbsp;&nbsp;&nbsp;=20
NUMBER_DATA_BUFFERS_RESTORE - 32</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002>2. =
DISABLE_RESOURCES_BUSY</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002>3. Fragment size of 2000 on the =
storage=20
units.</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002>4. LTO standalone tape drives ( 1 =
per media=20
server )</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D621414111-10042002>
<DIV><SPAN class=3D621414111-10042002><STRONG>The problem is that we are =
getting=20
10 m/s throughput on the database backup but only 1 or 2 m/s throughput =
on the=20
mailbox backups</STRONG>. </SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002>We also only&nbsp;got 28&nbsp;gig =
on a=20
100&nbsp;gig LTO tape (that should give us 200&nbsp;gig compressed) =
before it=20
asked for another tape. We did a bpexpdate on the tape before we used =
the=20
tape.</SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D621414111-10042002>Some errors we found in the all =
logs entry -=20
FS_ACCESS_DENIED /&nbsp; <SPAN=20
style=3D"FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 10pt; =
mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; =
mso-fareast-language: EN-US; mso-bidi-language: =
AR-SA">FS_OBJECT_CORRUPT.=20
<FONT size=3D3>Would these errors course the backup to run slower ? We =
did give=20
the technotes on these errors to the exchange=20
administrator.</FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=3D621414111-10042002><SPAN=20
style=3D"FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 10pt; =
mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; =
mso-fareast-language: EN-US; mso-bidi-language: =
AR-SA"></SPAN></SPAN>&nbsp;</DIV>
<DIV><FONT size=3D3><SPAN class=3D621414111-10042002><SPAN=20
style=3D"FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 10pt; =
mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; =
mso-fareast-language: EN-US; mso-bidi-language: AR-SA">What=20
else can we look at to increase the backup speed of the=20
mailboxes?</SPAN></SPAN></FONT></DIV></SPAN></DIV>
<P>JR Redelinghuys <BR>MGX - Software Engineer <BR>Tel&nbsp; - +27 82 =
459 1091=20
<BR>(W) - +27 11 695 2191 <BR>(H)&nbsp; - +27 11 976 1212 </P>&nbsp;=20
</BODY></HTML>

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