Re: [Networker] reporting question - backup size vs. size on disk - possible?
2009-03-02 12:03:23
James Pratt wrote:
I've been asked to create a few ad-hoc reports for a small number of
backups - size on tape in nw vs size on disk is one of the criteria...
looking at the mminfo query options, I don't see any way to get the
actual size of the backup on disk (ie size before backup) , only on the
tape(s) via mminfo or via gui in indexes... Is this "the way it is", or
am I overlooking something? I have not tried/checked the "canned" NSR
reports, instead I am using NSR_Reporter to get the dates, times, sizes
on tape, file counts etc etc...
I should note we are using an EMC CDL/VTL - compression is enabled at
that level, not on NW. could this be why I'm not seeing much compression
via NW? (for example, I have a website I backup, that is around 7gb on
disk - Backup size on tape shows about the same size, even though they
are all text/compressible files) ??
If you are compressing at the EDL this is the same as using hardware
compression on a physical tape drive. There is no way to see how much
virtual tape has been used for an individual save set. What you can do
instead is to see how much has been written to a full virtual tape and
compare this to the tape size you have defined. For example, on an EDL I
am using the average amount of data written to tape is 216GB, against a
tape size of 100GB, thus giving a compression ratio of 1:2.16.
To sign off this list, send email to listserv AT listserv.temple DOT edu and type
"signoff networker" in the body of the email. Please write to networker-request
AT listserv.temple DOT edu if you have any problems with this list. You can access the
archives at http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
|
|
|