Veritas-bu

[Veritas-bu] LTO3 Tape Drives and LTO2 media - no improvement

2006-03-28 06:10:46
Subject: [Veritas-bu] LTO3 Tape Drives and LTO2 media - no improvement
From: jim222mcd AT gmail DOT com (Jim McD)
Date: Tue, 28 Mar 2006 22:10:46 +1100
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Hi

That's exactly what we did - the same hcart type.   Similarey when we get
LTO3 media then we will differentiate.  Early day(s).

Cheers Jim


On 3/28/06, Paul Keating <pkeating AT bank-banque-canada DOT ca> wrote:
>
> Yes, Jim, that has been my experience.
>
> We put our new LTO3 drives in the same robot as our existing LTO3 drives,
> and all media is LTO2, all drives and media are configured as "HCART2"
>
> If they are not configured the same, (ie, you configure HCART2=3DLTO2 and
> HCART3=3DLTO3) NBU will not put an LTO2 tape in an LTO3 drive.
>
> the idea is to maintina backward compatibility....the LTO3 drive writes t=
o
> the LTO2 tape as if it were an LTO2 drive, so that if the tape is later
> inserted into an LTO2 drive it will continue to be able to be read from a=
nd
> written to.
>
> once you add LTO3 tapes, you then need to change the config of the LTO3
> drives to type "HCART3" and make sure all LTO3 tapes inserted into the
> library are configured the same, otherwise you will end up with all sorts=
 of
> problems when NBU puts a LTO3 tape in an LTO2 drive.
>
> Paul
>
>
>
>  -----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 *Jim McD
> *Sent:* March 26, 2006 7:19 AM
> *To:* Veritas-bu AT mailman.eng.auburn DOT edu
> *Subject:* [Veritas-bu] LTO3 Tape Drives and LTO2 media - no improvement
>
> Hi
>
> Is this correct ?
>
> My understanding is when LTO-2 tapes are put into a LTO3 tape drive the
> tape drive takes on all the attributes of an LTO2 tape drive hence transf=
er
> rates, density, etc are identical to an LTO2 tape drive.  Hence in a libr=
ary
> you can have mixed LTO-3 & LTO2 tape drives and if all the media is LTO2
> media then you will see no difference.   Only when you start using LTO3
> media then things will get better for both backup and recovery.
>
> Apparently LTO-3 tapes have a smart-card type of chip in them.
>
> Regards Jim
>
>
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
> La version fran=E7aise suit le texte anglais.
>
>
> -------------------------------------------------------------------------=
-----------
>
> This email may contain privileged and/or confidential information, and th=
e
> Bank of
> Canada does not waive any related rights. Any distribution, use, or
> copying of this
> email or the information it contains by other than the intended recipient
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> unauthorized. If you received this email in error please delete it
> immediately from
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.
>
>
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> confidentielle.
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> diffusion,
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>

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Hi <br>
<br>
That's exactly what we did - the same hcart type.&nbsp;&nbsp; Similarey
when we get LTO3 media then we will differentiate.&nbsp; Early day(s).<br>
<br>
Cheers Jim <br>
<br><br><div><span class=3D"gmail_quote">On 3/28/06, <b class=3D"gmail_send=
ername">Paul Keating</b> &lt;<a href=3D"mailto:pkeating@bank-banque-canada.=
ca">pkeating AT bank-banque-canada DOT ca</a>&gt; wrote:</span><blockquote 
class=
=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, 204, 204); margin=
: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div style=3D"direction: ltr;">




<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2">Yes,=20
Jim, that has been my experience.</font></span></div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2"></font></span>=
&nbsp;</div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2">We put=20
our new LTO3 drives in the same robot as our existing LTO3 drives, and all =
media=20
is LTO2, all drives and media are configured as &quot;HCART2&quot;</font></=
span></div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2"></font></span>=
&nbsp;</div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2">If=20
they are not configured the same, (ie, you configure HCART2=3DLTO2 and=20
HCART3=3DLTO3) NBU will not put an LTO2 tape in an LTO3 drive.</font></span=
></div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2"></font></span>=
&nbsp;</div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2">the=20
idea is to maintina backward compatibility....the LTO3 drive writes to the=
=20
LTO2&nbsp;tape as if it were an LTO2 drive, so that if the tape is later=20
inserted into an LTO2 drive it will continue to be able to be read from and=
=20
written to.</font></span></div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2"></font></span>=
&nbsp;</div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2">once=20
you add LTO3 tapes, you then need to change the config of the LTO3 drives t=
o=20
type &quot;HCART3&quot; and make sure all LTO3 tapes inserted into the libr=
ary are=20
configured the same, otherwise you will end up with all sorts of problems w=
hen=20
NBU puts a LTO3 tape in an LTO2 drive.</font></span></div></div><div style=
=3D"direction: ltr;"><span class=3D"sg">
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2"></font></span>=
&nbsp;</div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2">Paul</font></s=
pan></div></span></div><div style=3D"direction: ltr;"><span class=3D"e" id=
=3D"q_10a3be71b4133b85_2">
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2"></font></span>=
&nbsp;</div>
<div><span><font color=3D"#800000" face=3D"Arial" size=3D"2"></font></span>=
&nbsp;</div>
<blockquote style=3D"border-left: 2px solid rgb(128, 0, 0); padding-left: 5=
px; margin-left: 5px; margin-right: 0px;">
  <div></div>
  <div align=3D"left" dir=3D"ltr" lang=3D"en-us"><font face=3D"Tahoma" size=
=3D"2">-----Original Message-----<br><b>From:</b>=20
  <a href=3D"mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu" 
target=3D"_bla=
nk" onclick=3D"return top.js.OpenExtLink(window,event,this)">veritas-bu-adm=
in AT mailman.eng.auburn DOT edu</a>=20
  [mailto:<a href=3D"mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu" 
target=
=3D"_blank" onclick=3D"return top.js.OpenExtLink(window,event,this)">verita=
s-bu-admin AT mailman.eng.auburn DOT edu</a>] <b>On Behalf Of </b>Jim=20
  McD<br><b>Sent:</b> March 26, 2006 7:19 AM<br><b>To:</b>=20
  <a href=3D"mailto:Veritas-bu AT mailman.eng.auburn DOT edu" target=3D"_blank" 
on=
click=3D"return top.js.OpenExtLink(window,event,this)">[email protected]=
ng.auburn.edu</a><br><b>Subject:</b> [Veritas-bu] LTO3 Tape=20
  Drives and LTO2 media - no improvement<br><br></font></div>Hi<br><br>Is t=
his=20
  correct ?<br>&nbsp;<br>My understanding is when LTO-2 tapes are put into =
a=20
  LTO3 tape drive the tape drive takes on all the attributes of an LTO2 tap=
e=20
  drive hence transfer rates, density, etc are identical to an LTO2 tape=20
  drive.&nbsp; Hence in a library you can have mixed LTO-3 &amp; LTO2 tape=
=20
  drives and if all the media is LTO2 media then you will see no difference=
.=20
  &nbsp; Only when you start using LTO3 media then things will get better f=
or=20
  both backup and recovery.&nbsp; <br><br>Apparently LTO-3 tapes have a=20
  smart-card type of chip in them. <br><br>Regards Jim=20
<br></blockquote>
</span></div><br>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br><br>La version fran=E7aise=
 suit le texte anglais.<br><br>--------------------------------------------=
----------------------------------------
<br><br>This email may contain privileged and/or confidential information, =
and the Bank of<br>Canada does not waive any related rights. Any distributi=
on, use, or copying of this<br>email or the information it contains by othe=
r than the intended recipient is
<br>unauthorized. If you received this email in error please delete it imme=
diately from<br>your system and notify the sender promptly by email that yo=
u have done so.<br><br>----------------------------------------------------=
--------------------------------
<br><br>Le pr=E9sent courriel peut contenir de l'information privil=E9gi=E9=
e ou confidentielle.<br>La Banque du Canada ne renonce pas aux droits qui s=
'y rapportent. Toute diffusion,<br>utilisation ou copie de ce courriel ou d=
es renseignements qu'il contient par une
<br>personne autre que le ou les destinataires d=E9sign=E9s est interdite. =
Si vous recevez<br>ce courriel par erreur, veuillez le supprimer imm=E9diat=
ement et envoyer sans d=E9lai =E0<br>l'exp=E9diteur un message =E9lectroniq=
ue pour l'aviser que vous avez =E9limin=E9 de votre
<br>ordinateur toute copie du courriel re=E7u.<br><br><br></blockquote></di=
v><br>

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