[Veritas-bu] What Kb/sec do you get with your LTO2 Drive

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That's not great.  We sometimes get 3300KB/sec with LTO-1.  We've spiked up
to 40MB/sec on occaision.  That's using very compressable data (Oracla
database files) on SAN-attached fiber.
 
Did you tune your SIZE_DATA_BUFFERS and NUM_DATA_BUFFERS?  I have no idea
what the gen-2 values are..and of course, Veritas won't tell you ;)  The
only way of figuring out the best values is to run a lot of test cases.
 
-- 
 Drew Fabbro [fabbro.andrew AT cnf DOT com] 
 Unix Systems Group 
 Desk: 503-450-3374 
 Cell: 503-701-0369 

-----Original Message-----
From: Karl.Rossing AT Federated DOT CA [mailto:Karl.Rossing AT Federated DOT 
CA] 
Sent: Friday, July 18, 2003 1:02 PM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] What Kb/sec do you get with your LTO2 Drive



I'm getting about 3300KB/sec. 

Sun e250 Solaris 8 with an L8 LTO2 tape drive. I'm backing up 3GB of locally
attached data. 

I'm not sure if that is gewd. 

What do you get? 

Thanks 

Karl


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<DIV><SPAN class=248404420-18072003><FONT face=Arial color=#0000ff 
size=2>That's 
not great.&nbsp; We sometimes get 3300KB/sec with LTO-1.&nbsp; We've spiked up 
to 40MB/sec on occaision.&nbsp; That's using very compressable data (Oracla 
database files) on SAN-attached fiber.</FONT></SPAN></DIV>
<DIV><SPAN class=248404420-18072003><FONT face=Arial color=#0000ff 
size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=248404420-18072003><FONT face=Arial color=#0000ff size=2>Did 
you tune your SIZE_DATA_BUFFERS and NUM_DATA_BUFFERS?&nbsp; I have no idea what 
the gen-2 values are..and of course, Veritas won't tell you ;)&nbsp; The only 
way of figuring out the best values is to run a lot of test 
cases.</FONT></SPAN></DIV>
<DIV><FONT face="Courier New" size=2></FONT>&nbsp;</DIV>
<DIV><FONT face="Courier New" size=2>--</FONT> <BR><FONT face="Courier New" 
size=2>&nbsp;Drew Fabbro [fabbro.andrew AT cnf DOT com]</FONT> <BR><FONT 
face="Courier New" size=2>&nbsp;Unix Systems Group</FONT> <BR><FONT 
face="Courier New" size=2>&nbsp;Desk: 503-450-3374</FONT> <BR><FONT 
face="Courier New" size=2>&nbsp;Cell: 503-701-0369</FONT> </DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
  <DIV></DIV>
  <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT 
  face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> 
  Karl.Rossing AT Federated DOT CA [mailto:Karl.Rossing AT Federated DOT CA] 
<BR><B>Sent:</B> 
  Friday, July 18, 2003 1:02 PM<BR><B>To:</B> 
  Veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> [Veritas-bu] What 
Kb/sec 
  do you get with your LTO2 Drive<BR><BR></FONT></DIV><BR><FONT face=sans-serif 
  size=2>I'm getting about 3300KB/sec.</FONT> <BR><BR><FONT face=sans-serif 
  size=2>Sun e250 Solaris 8 with an L8 LTO2 tape drive. I'm backing up 3GB of 
  locally attached data.</FONT> <BR><BR><FONT face=sans-serif size=2>I'm not 
  sure if that is gewd.</FONT> <BR><BR><FONT face=sans-serif size=2>What do you 
  get?</FONT> <BR><BR><FONT face=sans-serif size=2>Thanks</FONT> <BR><BR><FONT 
  face=sans-serif size=2>Karl</FONT></BLOCKQUOTE></BODY></HTML>

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