[Veritas-bu] RedHat/Linux NetBackup Media Server ".h" tape driver Perfor

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RedHat/Linux Guru's
 
Has anyone modified their system(s) on a media server as described
below and seen improved backup performance results?
 
Improving Performance:

The st tape driver has internal buffers that have a default size of
32K. Performance may be enhanced if they are set to match the default
block size used by bptm. The default block size for bptm is 64K. Edit
the st_options.h file as shown below:

You also may need to change the following entry to have a smaller value
depending on
the available system memory:

#define ST_MAX_BUFFERS 4

Follow the Red Hat guidelines for incorporating these source changes
into your system.

Original Value New Value
#define ST_BUFFER_BLOCKS 32 #define ST_BUFFER_BLOCKS 64
 
Thanks,
Scott


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<DIV>RedHat/Linux Guru's</DIV>
<DIV>&nbsp;</DIV>
<DIV>Has anyone modified their system(s) on a media server as described =
below and seen improved backup performance results?</DIV>
<DIV>&nbsp;</DIV>
<DIV>Improving Performance:<BR></DIV>
<DIV>The st tape driver has internal buffers that have a default size of =
32K. Performance may be enhanced if they are set to match the default =
block size used by bptm. The default block size for bptm is 64K. Edit the =
st_options.h file as shown below:<BR></DIV>
<DIV>You also may need to change the following entry to have a smaller =
value depending on<BR>the available system memory:<BR></DIV>
<DIV>#define ST_MAX_BUFFERS 4<BR></DIV>
<DIV>Follow the Red Hat guidelines for incorporating these source changes =
into your system.<BR></DIV>
<DIV>Original Value New Value<BR>#define ST_BUFFER_BLOCKS 32 #define =
ST_BUFFER_BLOCKS 64</DIV>
<DIV>&nbsp;</DIV>
<DIV>Thanks,</DIV>
<DIV>Scott<BR></DIV></BODY></HTML>

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[Veritas-bu] RedHat/Linux NetBackup Media Server ".h" tape driver Performance Tunning
