[Networker] Staging policy.
2007-12-19 13:11:52
Hello,
Our setup has a 4Tb disk backup device on Networker 7.2.2 (Solaris
server). We currently have a simple staging policy which I fix from cron
to the following high and low watermarks:
30 21 * * * /usr/local/TAUSRC/Local/ToolBox/fixstage.pl 'TAUDefault
stage' 95 96
0 7 * * * /usr/local/TAUSRC/Local/ToolBox/fixstage.pl 'TAUDefault stage'
90 91
1 7 * * 3 /usr/local/TAUSRC/Local/ToolBox/fixstage.pl 'TAUDefault stage'
70 75
1 7 * * 4 /usr/local/TAUSRC/Local/ToolBox/fixstage.pl 'TAUDefault stage'
50 52
As you can see before the weekend (on Wednesday and Thursday) I try
to leave 2Tb available for the weekend's fulls. Also notice that I lower
the watermarks during the day, so that they will not interfere with the
night's backups. This is not optimal as it means that we are staging
some of the savesets too early. I am looking for an option to copy the
savesets to tape, but keep them on disk and delete them only when there
is no room for the new backups. This will allow for a more optimal usage
of the disk space, while avoiding the situation of having to stage while
a backup is already running and filled the disk. I couldn't find such an
option on the stage policy window. Does anyone know how to do that ?
I know I can script nsrclone and nsrmm, to achieve similar behavior,
but I am looking for a better policy.
My fixstage.pl looks like that:
#!/bin/perl
open(OUT,">/tmp/nsradmin.in.fixstage");
print OUT ". name: $ARGV[0] ; \n\n";
print OUT "\nupdate high water mark (%): $ARGV[2] ; \n";
print OUT "low water mark (%): $ARGV[1] ; \n";
print OUT ("\nquit\n");
close(OUT);
system ("nsradmin -i /tmp/nsradmin.in.fixstage");
sleep 5;
--
-- Yaron.
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