[Veritas-bu] Re-use of used DLT4000 tapes?

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Hello.

Does anyone know if it is worth it to re-use DLT IV tapes
that were previously used in a system with DLT4000 drives?
We have a new system with DLT7000 drives and I would
like to reuse the old tapes, if possible.  If it is not worth
it, we can buy new ones.  However, this can be expensive.
Both the old and the new systems use Netbackup.

I wasn't sure if there was some kind of header or something
written to the tape when used in the DLT4000 drives that
would make it inefficient to use in the DLT7000 drive.  Time
is of the essense (of course) with us when doing a backup/restore
and if it will slow things down, we will just use new media.

Should we just import the old tapes into our robot and then
expire them before using?  Should we "degauze" (sp?) them first?

Any opinions or previous experiences would be appreciated.

Toni Blackwelder
Unix Support
Nortel Networks
trblack AT nortelnetworks DOT com

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<P><FONT SIZE=2 FACE="Arial">Hello.</FONT>
</P>

<P><FONT SIZE=2 FACE="Arial">Does anyone know if it is worth it to re-use DLT 
IV tapes</FONT>
<BR><FONT SIZE=2 FACE="Arial">that were previously used in a system with 
DLT4000 drives?</FONT>
<BR><FONT SIZE=2 FACE="Arial">We have a new system with DLT7000 drives and I 
would</FONT>
<BR><FONT SIZE=2 FACE="Arial">like to reuse the old tapes, if possible.&nbsp; 
If it is not worth</FONT>
<BR><FONT SIZE=2 FACE="Arial">it, we can buy new ones.&nbsp; However, this can 
be expensive.</FONT>
<BR><FONT SIZE=2 FACE="Arial">Both the old and the new systems use 
Netbackup.</FONT>
</P>

<P><FONT SIZE=2 FACE="Arial">I wasn't sure if there was some kind of header or 
something</FONT>
<BR><FONT SIZE=2 FACE="Arial">written to the tape when used in the DLT4000 
drives that</FONT>
<BR><FONT SIZE=2 FACE="Arial">would make it inefficient to use in the DLT7000 
drive.&nbsp; Time</FONT>
<BR><FONT SIZE=2 FACE="Arial">is of the essense (of course) with us when doing 
a backup/restore</FONT>
<BR><FONT SIZE=2 FACE="Arial">and if it will slow things down, we will just use 
new media.</FONT>
</P>

<P><FONT SIZE=2 FACE="Arial">Should we just import the old tapes into our robot 
and then</FONT>
<BR><FONT SIZE=2 FACE="Arial">expire them before using?&nbsp; Should we 
&quot;degauze&quot; (sp?) them first?</FONT>
</P>

<P><FONT SIZE=2 FACE="Arial">Any opinions or previous experiences would be 
appreciated.</FONT>
</P>

<P><FONT SIZE=2 FACE="Arial">Toni Blackwelder</FONT>
<BR><FONT SIZE=2 FACE="Arial">Unix Support</FONT>
<BR><FONT SIZE=2 FACE="Arial">Nortel Networks</FONT>
<BR><FONT SIZE=2 FACE="Arial">trblack AT nortelnetworks DOT com</FONT>
</P>

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