[Veritas-bu] 1 week retention periods

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Hi,

 

I've just recently set up Netbackup 4.5 in a site. The client due to a
lack of available tapes has decided to run their policy with a 1 week
retention period.

 

There is one policy with a full backup on the Friday, and a
differential-inc on every other day.

 

The full backups are on one tape.

 

The differentials are appended on a daily basis onto one tape.

 

My question relates to the differential backups. If you have a weeks
worth of differential backups that are appended to the one tape with a 1
week retention period this tape should be available for use after one
week. Once that tape becomes available and is overwritten with a
differential backup for the new week what would happen to the
differential backups that are appended at the end of the week??

 

Would there be any way of recovering these jobs at the end of the week
once the tape becomes available for new backups if a new differential
backup is written to the tape??

 

Cheers,

 

Nick

 


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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi,</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I&#8217;ve just recently set up Netbackup 4.5 in a =
site. The
client due to a lack of available tapes has decided to run their policy =
with a
1 week retention period.</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>There is one policy with a full backup on the Friday, =
and a
differential-inc on every other day.</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>The full backups are on one tape.</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>The differentials are appended on a daily basis onto =
one
tape.</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>My question relates to the differential backups. If =
you have
a weeks worth of differential backups that are appended to the one tape =
with a
1 week retention period this tape should be available for use after one =
week.
Once that tape becomes available and is overwritten with a differential =
backup for
the new week what would happen to the differential backups that are =
appended at
the end of the week??</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Would there be any way of recovering these jobs at =
the end
of the week once the tape becomes available for new backups if a new
differential backup is written to the tape??</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Cheers,</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Nick</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

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