Veritas-bu

[Veritas-bu] LTO1 Capacity 300GB

2003-09-17 11:50:53
Subject: [Veritas-bu] LTO1 Capacity 300GB
From: David_Cornely AT intuit DOT com (Cornely, David)
Date: Wed, 17 Sep 2003 08:50:53 -0700
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I agree.  With testing we've done capacities for AIT-3 have reached upwards
of 800GB for one tape (not a typo) so this doesn't sound outrageous or
unusual.  Depending on data type some of the latest tape technologies out
there can achieve phenomenal compression ratios.
-----Original Message-----
From: David Chapa [mailto:david.chapa AT adic DOT com]
Sent: Wednesday, September 17, 2003 08:25
To: Iwan Sulistyawan; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] LTO1 Capacity 300GB


That's entirely possible if the data you are backing up is HIGHLY
compressible.
 
I've seen similar results at a handful of clients while I was a consultant.
 
-----Original Message-----
From: Iwan Sulistyawan [mailto:iwan AT indosat-m3 DOT com] 
Sent: Tuesday, September 16, 2003 9:10 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] LTO1 Capacity 300GB
 
Hi..
I just starting to use veritas netbackup with LTO generation 1
on paper the capacity is only 100GB (Native) or 200GB (compressed)
 
But when I check my tape,  It say the capacity almost 300GB (Native)
is it normal or something wrong with my media server??..
 
fyi, backup status is succes.. and I also can restore some directory from it
successfully. 
 
 
[ root @spdpdb:admincmd]# ./bpmedialist 
Server Host = spdpdb
 
 id     rl  images   allocated        last updated      density  kbytes
restores
           vimages   expiration       last read         <------- STATUS
------->
----------------------------------------------------------------------------
----
A00000   6      1   09/06/2003 12:41  09/06/2003 12:41   hcart  299173536
4
                1   03/10/2004 12:41  09/10/2003 18:01    FULL
 
A00001   6      2   09/06/2003 12:41  09/06/2003 12:41   hcart  322593986
0
                2   03/10/2004 12:41        N/A       
 
 
best regards,
Iwan Sulisytawan

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<DIV><SPAN class=3D401454915-17092003><FONT face=3DArial =
color=3D#0000ff size=3D2>I=20
agree.&nbsp; With testing we've done capacities for AIT-3 have reached =
upwards=20
of 800GB for one tape (not a typo) so this doesn't sound outrageous or=20
unusual.&nbsp; Depending on data type some of the latest tape =
technologies out=20
there can achieve phenomenal compression ratios.</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> David Chapa=20
  [mailto:david.chapa AT adic DOT com]<BR><B>Sent:</B> Wednesday, September =
17, 2003=20
  08:25<BR><B>To:</B> Iwan Sulistyawan;=20
  veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> RE: [Veritas-bu] =
LTO1=20
  Capacity 300GB<BR><BR></FONT></DIV>
  <DIV class=3DSection1><!-- Converted from text/plain format -->
  <P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">That's =
entirely=20
  possible if the data you are backing up is HIGHLY=20
  compressible.<o:p></o:p></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"><o:p>&nbsp;</o:p></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've seen =
similar=20
  results at a handful of clients while I was a=20
  consultant.<o:p></o:p></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"><o:p>&nbsp;</o:p></SPAN></FONT></P>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DTahoma =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original=20
  Message-----<BR><B><SPAN style=3D"FONT-WEIGHT: bold">From:</SPAN></B> =
Iwan=20
  Sulistyawan [mailto:iwan AT indosat-m3 DOT com] <BR><B><SPAN=20
  style=3D"FONT-WEIGHT: bold">Sent:</SPAN></B> Tuesday, September 16, =
2003 9:10=20
  PM<BR><B><SPAN style=3D"FONT-WEIGHT: bold">To:</SPAN></B>=20
  veritas-bu AT mailman.eng.auburn DOT edu<BR><B><SPAN=20
  style=3D"FONT-WEIGHT: bold">Subject:</SPAN></B> [Veritas-bu] LTO1 =
Capacity=20
  300GB</SPAN></FONT></P>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt"><o:p>&nbsp;</o:p></SPAN></FONT></P>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial">Hi..</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">I just starting to use =
veritas=20
  netbackup with LTO generation 1</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">on paper the capacity =
is only=20
  100GB (Native) or 200GB =
(compressed)</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt">&nbsp;<o:p></o:p></SPAN></FONT></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">But when I check my =
tape,&nbsp; It=20
  say the capacity almost 300GB =
(Native)</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">is it normal or =
something wrong=20
  with my media server??..</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt">&nbsp;<o:p></o:p></SPAN></FONT></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">fyi, backup status is =
succes.. and=20
  I also can restore some directory from it successfully.=20
  </SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt">&nbsp;<o:p></o:p></SPAN></FONT></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt">&nbsp;<o:p></o:p></SPAN></FONT></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT =
face=3D"Courier New"=20
  size=3D2><SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier =
New'">[ root=20
  @spdpdb:admincmd]# ./bpmedialist <BR>Server Host =3D=20
  spdpdb</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt">&nbsp;<o:p></o:p></SPAN></FONT></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT =
face=3D"Courier New"=20
  size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier =
New'">&nbsp;id&nbsp;&nbsp;&nbsp;&nbsp;=20
  rl&nbsp; images&nbsp;&nbsp;=20
  allocated&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; last=20
  updated&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; density&nbsp; kbytes=20
  =
restores<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
=20
  vimages&nbsp;&nbsp; expiration&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
last=20
  read&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;------- =
STATUS=20
  =
-------&gt;<BR>---------------------------------------------------------=
-----------------------<BR>A00000&nbsp;&nbsp;=20
  6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp;&nbsp; 09/06/2003 12:41&nbsp;=20
  09/06/2003 12:41&nbsp;&nbsp; hcart&nbsp;=20
  299173536&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
  =
4<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;=20
  1&nbsp;&nbsp; 03/10/2004 12:41&nbsp; 09/10/2003 =
18:01&nbsp;&nbsp;&nbsp;=20
  FULL</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt">&nbsp;<o:p></o:p></SPAN></FONT></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT =
face=3D"Courier New"=20
  size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier =
New'">A00001&nbsp;&nbsp;=20
  6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2&nbsp;&nbsp; 09/06/2003 12:41&nbsp;=20
  09/06/2003 12:41&nbsp;&nbsp; hcart&nbsp;=20
  322593986&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
  =
0<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;=20
  2&nbsp;&nbsp; 03/10/2004 =
12:41&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
  N/A&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt">&nbsp;<o:p></o:p></SPAN></FONT></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
  size=3D3><SPAN style=3D"FONT-SIZE: =
12pt">&nbsp;<o:p></o:p></SPAN></FONT></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">best=20
  regards,</SPAN></FONT><o:p></o:p></P></DIV>
  <DIV>
  <P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Iwan=20
  =
Sulisytawan</SPAN></FONT><o:p></o:p></P></DIV></DIV></BLOCKQUOTE></BODY>=
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