[OpenAFS] tapeconfig capacity parameter still limited to 2TB?
Howard Jr, Russell A
russ@cs.pitt.edu
Mon, 18 May 2015 16:48:15 +0000
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Over the summer, we are upgrading our tape library from LTO-4 to LTO-6 and =
would like to take advantage of the full capacity of the new tapes.
The tapeconfig documentation indicates that the max tape size supported is =
2TB. Is this still the case?
Our current drive is LTO-4 with a native uncompressed capacity of 800 GB an=
d a compressed capacity of 1.6TB. For our current backups, we specified th=
e tape capacity in the tapeconfig file as 1600G. This has allowed us to ut=
ilize the full capacity of the LTO-4 tapes. Our new tape drive will have a=
native uncompressed capacity of 2.5TB and a compressed capacity of 6.25TB.
If the 2TB limit is still in place, we would like to request that it be inc=
reased to at least 6.25TB (or larger to support future tape capacity increa=
ses). Once our new tape drive arrives, we are willing to test any patches =
to help facilitate an increase in the tape size limit.
--
Russ Howard
Systems/Programmer III
Computer Science Department
University of Pittsburgh
6209 Sennott Square
412-624-8834
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<p class=3D"MsoNormal">Over the summer, we are upgrading our tape library f=
rom LTO-4 to LTO-6 and would like to take advantage of the full capacity of=
the new tapes.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">The tapeconfig documentation indicates that the max =
tape size supported is 2TB. Is this still the case?<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Our current drive is LTO-4 with a native uncompresse=
d capacity of 800 GB and a compressed capacity of 1.6TB. For our curr=
ent backups, we specified the tape capacity in the tapeconfig file as 1600G=
. This has allowed us to utilize the full
capacity of the LTO-4 tapes. Our new tape drive will have a native u=
ncompressed capacity of 2.5TB and a compressed capacity of 6.25TB.<o:p></o:=
p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">If the 2TB limit is still in place, we would like to=
request that it be increased to at least 6.25TB (or larger to support futu=
re tape capacity increases). Once our new tape drive arrives, we are =
willing to test any patches to help facilitate
an increase in the tape size limit.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoPlainText">--<o:p></o:p></p>
<p class=3D"MsoPlainText">Russ Howard<o:p></o:p></p>
<p class=3D"MsoPlainText">Systems/Programmer III<o:p></o:p></p>
<p class=3D"MsoPlainText">Computer Science Department<o:p></o:p></p>
<p class=3D"MsoPlainText">University of Pittsburgh<o:p></o:p></p>
<p class=3D"MsoPlainText">6209 Sennott Square<o:p></o:p></p>
<p class=3D"MsoNormal">412-624-8834<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
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