Veritas-bu

[Veritas-bu] 4 LTO Tape Drives

2003-03-06 11:37:00
Subject: [Veritas-bu] 4 LTO Tape Drives
From: jonw AT n2h2 DOT com (jonw AT n2h2 DOT com)
Date: Thu, 6 Mar 2003 08:37:00 -0800
This is a multi-part message in MIME format.

------_=_NextPart_001_01C2E3FE.9C90935C
Content-Type: text/plain;
        charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Keep in mind that your PCI bus could also become a bottleneck.   If you =
plan to move all that SCSI and network traffic though a single, 32-bit =
PCI bus, you will probably saturate it.   Hopefully you have a 64-bit =
PCI bus and cards or multiple PCI busses . (or other HW architecture =
that supports this type of throughput)

-----Original Message-----
From: Donaldson, Mark [mailto:Mark.Donaldson AT experianems DOT com]
Sent: Thursday, March 06, 2003 8:11 AM
To: 'Karl.Rossing AT Federated DOT CA'; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] 4 LTO Tape Drives



LTO has a native speed of 15 MB/sec.  I've never seen ours burst past 25 =
MB/sec.  So your Gigabit ethernet should be able to drive all four =
drives at max speed.

LVD SCSI is only good for 80MB/sec - I'd recommend two busses with two =
tape drives each.=20

$.02=20
-M=20

-----Original Message-----=20
From: Karl.Rossing AT Federated DOT CA [ mailto:Karl.Rossing AT Federated DOT 
CA]=20
Sent: Thursday, March 06, 2003 8:53 AM=20
To: veritas-bu AT mailman.eng.auburn DOT edu=20
Subject: [Veritas-bu] 4 LTO Tape Drives=20


I'm thinking of getting a StorageTek L40 library with 4 LVD LTO1 tape=20
drives.=20

We don't run a SAN. We do network backups. Our backbone is a 1GB fiber.=20

Can the 1GB fiber master server drive the 4 LTO1 drives at full speed?=20
What has your experience been?=20

Thanks,=20

Karl=20
_______________________________________________=20
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu=20
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu=20


------_=_NextPart_001_01C2E3FE.9C90935C
Content-Type: text/html;
        charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!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>RE: [Veritas-bu] 4 LTO Tape Drives</TITLE>

<META content=3D"MSHTML 6.00.2716.2200" name=3DGENERATOR></HEAD>
<BODY>
<DIV><SPAN class=3D314292816-06032003><FONT face=3DArial color=3D#0000ff =
size=3D2>Keep=20
in mind that your PCI bus could also become a bottleneck.&nbsp;&nbsp; If =
you=20
plan to move all that SCSI and network traffic though a single, 32-bit =
PCI bus,=20
you will probably saturate it.&nbsp;&nbsp; Hopefully you have a 64-bit =
PCI bus=20
and cards or multiple PCI busses . (or other HW architecture that =
supports this=20
type of throughput)</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> Donaldson, Mark=20
  [mailto:Mark.Donaldson AT experianems DOT com]<BR><B>Sent:</B> Thursday, =
March 06,=20
  2003 8:11 AM<BR><B>To:</B> 'Karl.Rossing AT Federated DOT CA';=20
  veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> RE: [Veritas-bu] =
4 LTO=20
  Tape Drives<BR><BR></FONT></DIV>
  <P><FONT size=3D2>LTO has a native speed of 15 MB/sec.&nbsp; I've =
never seen=20
  ours burst past 25 MB/sec.&nbsp; So your Gigabit ethernet should be =
able to=20
  drive all four drives at max speed.</FONT></P>
  <P><FONT size=3D2>LVD SCSI is only good for 80MB/sec - I'd recommend =
two busses=20
  with two tape drives each.</FONT> </P>
  <P><FONT size=3D2>$.02</FONT> <BR><FONT size=3D2>-M</FONT> </P>
  <P><FONT size=3D2>-----Original Message-----</FONT> <BR><FONT =
size=3D2>From:=20
  Karl.Rossing AT Federated DOT CA [<A=20
  =
href=3D"mailto:Karl.Rossing AT Federated DOT 
CA">mailto:[email protected]=
A</A>]</FONT>=20
  <BR><FONT size=3D2>Sent: Thursday, March 06, 2003 8:53 AM</FONT> =
<BR><FONT=20
  size=3D2>To: veritas-bu AT mailman.eng.auburn DOT edu</FONT> <BR><FONT =
size=3D2>Subject:=20
  [Veritas-bu] 4 LTO Tape Drives</FONT> </P><BR>
  <P><FONT size=3D2>I'm thinking of getting a StorageTek L40 library =
with 4 LVD=20
  LTO1 tape </FONT><BR><FONT size=3D2>drives.</FONT> </P>
  <P><FONT size=3D2>We don't run a SAN. We do network backups. Our =
backbone is a=20
  1GB fiber.</FONT> </P>
  <P><FONT size=3D2>Can the 1GB fiber master server drive the 4 LTO1 =
drives at=20
  full speed? </FONT><BR><FONT size=3D2>What has your experience =
been?</FONT> </P>
  <P><FONT size=3D2>Thanks,</FONT> </P>
  <P><FONT size=3D2>Karl</FONT> <BR><FONT=20
  size=3D2>_______________________________________________</FONT> =
<BR><FONT=20
  size=3D2>Veritas-bu maillist&nbsp; -&nbsp;=20
  Veritas-bu AT mailman.eng.auburn DOT edu</FONT> <BR><FONT size=3D2><A=20
  href=3D"http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu"=20
  =
target=3D_blank>http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu=
</A></FONT>=20
  </P></BLOCKQUOTE></BODY></HTML>

------_=_NextPart_001_01C2E3FE.9C90935C--

<Prev in Thread] Current Thread [Next in Thread>