ibm-information-center/dist/eclipse/plugins/i5OS.ic.rzau9_5.4.0.1/rzau9formattap.htm

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<h1 class="topictitle1">Formatting tape media for use by Linux</h1>
<div><p>This topic discusses how to format tape media.</p>
<div class="section"><p>The tape media formats used by <span class="keyword">i5/OS™</span> and Linux<sup>®</sup> are
mutually exclusive; <span class="keyword">i5/OS</span> uses
labels, Linux requires
a non-labelled tape. Therefore <span class="keyword">i5/OS</span> and Linux servers
cannot share the same tape media.</p>
<div class="note"><span class="notetitle">Note:</span> All new tapes must be initially
formatted using the Initialize Tape (INZTAP) CL command. After the tape has
been formatted using INZTAP, additional formatting can be done by Linux, if required.</div>
<p>From
an <span class="keyword">i5/OS</span> command line,
enter the Initialize Tape (INZTAP) CL command: </p>
<pre>INZTAP DEV(TAP01) NEWVOL(*NONE) NEWOWNID(*BLANK) VOL(*MOUNTED) CHECK(*NO) DENSITY(*DEVTYPE) CODE(*EBCDIC)</pre>
<p>TAP01 is the name of the tape device. Yours might be different. </p>
<p>DENSITY(*DEVTYPE)
gives the best performance; however, if you receive an error with this setting
when trying to initialize the tape cartridge, try using DENSITY(*CTGTYPE).
If you still receive an error, the tape cartridge is incompatible with your
tape drive. </p>
<p>This command produces a non-labelled tape that can be used
by Linux backup
applications. Note that if tapes are used that are not of the default density
for the drive (consult your drive's documentation), you need to reset the
tape density after the iSeries™ partition has been restarted. </p>
<p>To reset
the tape density after an iSeries partition has been restarted, complete the
following steps:</p>
</div>
<ol><li class="stepexpand"><span>Put a spare tape in the drive. Note that the next step erases all
the data on the tape.</span></li>
<li class="stepexpand"><span>Issue the following command: </span> <pre>INZTAP DEV(tape-device-name) CHECK(*NO) Density(*CTGTYPE).</pre>
</li>
<li class="stepexpand"><span>You can now switch the blank tape with the tape that you want to
use for Linux backups.
Backup applications should now work normally. Failure to initialize a blank
tape of the correct density can have unanticipated results. If you regularly
switch tape densities you might need to repeat the above steps
more often than just after an IPL.</span></li>
</ol>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzau9linuxbackup.htm" title="This topic introduces the techniques you can use to perform Linux-centric backup and recovery on an Integrated xSeries Server or Integrated xSeries Adapter running Linux.">Linux-centric backup and recovery</a></div>
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