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what's the speed can you get from your LTO1 Drives?=20
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu =
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Lewick, =
Taylor
Sent: Friday, January 14, 2005 12:02 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Is Anyone mixing host streams across different =
drive types
So I just configured and started testing our new LTO2 tape drives, We =
had/have some DLT and LTO1 drives...
And at first I didn't see a big increase, but then I figured it was the =
layout of the files I was backing up. Meaning, I wasn't backing up a =
few large files (like oradata directories), so I tested one of these =
filesystems, and I am getting 40,000-45,000 KB sec speed. Needless to =
say I am quite happy with that...
=20
Does anyone out there take the time to isolate filesystems like these, =
and create multiple policies for a host and a class of tape drive.
=20
For instance, say we have host squid who is a large DB server.
=20
Does anyone break out squid into policies like
=20
Squid-Nightly-Full-LT02
Files...
New Stream
/u01/oradata/really-big_files
New Stream
/u02/oradata/really-big_files
=20
Squid-Nightly-Full-LT01
Files...
New Stream
/all_other_files
=20
NetBackup should allow you to do this in the GUI, in the NEW_STREAM =
directive you should be able to specify which storage group you want to =
use, although this could keep one job running for a long time if it is =
waiting for a drive while another stream has finished, but a waiting job =
isn't really a bad thing...
=20
I would imagine, this is less important to someone who has a virtual =
disk library, because that extends your backup window to your tapes to =
nearly 24 hours.
But if you don't yet use backup to disk, it might be worth it to break =
out a hosts filesystems to different drive types. Just curious if =
anyone does this now?
=20
Taylor
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<DIV><SPAN class=3D250142423-14012005><FONT face=3D"Comic Sans MS" =
color=3D#0000ff=20
size=3D2>what's the speed can you get from your LTO1 Drives? =
</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B>=20
veritas-bu-admin AT mailman.eng.auburn DOT edu=20
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]<B>On Behalf Of =
</B>Lewick,=20
Taylor<BR><B>Sent:</B> Friday, January 14, 2005 12:02 PM<BR><B>To:</B> =
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> [Veritas-bu] Is =
Anyone=20
mixing host streams across different drive types<BR><BR></FONT></DIV>
<DIV class=3DSection1>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">So I just =
configured=20
and started testing our new LTO2 tape drives, We had/have some DLT and =
LTO1=20
drives…</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">And at =
first I didn’t=20
see a big increase, but then I figured it was the layout of the files =
I was=20
backing up. Meaning, I wasn’t backing up a few large files =
(like oradata=20
directories), so I tested one of these filesystems, and I am getting=20
40,000-45,000 KB sec speed. Needless to say I am quite happy =
with=20
that…</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Does anyone =
out there=20
take the time to isolate filesystems like these, and create multiple =
policies=20
for a host and a class of tape drive.</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">For =
instance, say we=20
have host squid who is a large DB server.</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Does anyone =
break out=20
squid into policies like</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial">Squid-Nightly-Full-LT02</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial">Files…</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">New=20
Stream</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial">/u01/oradata/really-big_files</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">New=20
Stream</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial">/u02/oradata/really-big_files</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial">Squid-Nightly-Full-LT01</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3D"Times New Roman" size=3D3><SPAN=20
style=3D"FONT-SIZE: 12pt"> <FONT color=3Dnavy><SPAN=20
style=3D"COLOR: navy">Files…</SPAN></FONT></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">New=20
Stream</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial">/all_other_files</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">NetBackup =
should=20
allow you to do this in the GUI, in the NEW_STREAM directive you =
should be=20
able to specify which storage group you want to use, although this =
could keep=20
one job running for a long time if it is waiting for a drive while =
another=20
stream has finished, but a waiting job isn’t really a bad=20
thing…</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I would =
imagine, this=20
is less important to someone who has a virtual disk library, because =
that=20
extends your backup window to your tapes to nearly 24 =
hours.</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">But if you =
don’t yet=20
use backup to disk, it might be worth it to break out a hosts =
filesystems to=20
different drive types. Just curious if anyone does this=20
now?</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial">Taylor</SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>
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