Re: Domino 8 compression

Rob,
It tells me that the backup speed is limited by the actual write speed of
the tape drive. Before, the tape drive was compressing the data, now the
data is coming pre-compressed. Either way, it is writing the same amount
of data to the tape (assuming similar compression ratios), even though the
amount of data reported by the system is different.

You would need the stats like the compression ratio that Chris mentions in
a previous posting, although that has moved from SST to PRTERRLOG
TYPE(*VOLSTAT) VOLTYPE(3580) and you would need a never before used tape
to figure it out, or calculate your own deltas from before and after
reports.

=====================
Tom Kreimer
Network Manager
Buckhorn Inc, Milford OH

From: rob@xxxxxxxxx
To: Lotus Domino on the iSeries / AS400 <domino400@xxxxxxxxxxxx>
Date: 05/19/2009 11:49 AM
Subject: Re: Domino 8 compression
Sent by: domino400-bounces+tkreimer=buckhorninc.com@xxxxxxxxxxxx

--------------------------------------------------------------------------

The length of the save duration didn't really change that much. Summary,
only chopped off 5 minutes by using three less of our 70GB disk drives.
What's the deal, it's the number of the files and not the size? So did we
save the 5 minutes by removing the 800+ insignificant l_ archive log
files and not by the compression of the large files which freed up over
200GB?

Before compression:
05/11/09 17:32:13 start
05/11/09 19:01:48 2017181 blocks processed for sequence 1, volume AMON15
05/11/09 20:33:31 2042477 blocks processed for sequence 1, volume AMON25
05/11/09 21:00:36 576892 blocks processed for sequence 1, volume AMON35
05/11/09 21:00:40 4308 objects saved.

After compression:
05/18/09 17:32:12 start
05/18/09 19:01:48 1742161 blocks processed for sequence 1, volume AMON11
05/18/09 20:33:45 1747936 blocks processed for sequence 1, volume AMON21
05/18/09 20:55:23 387384 blocks processed for sequence 1, volume AMON31
05/18/09 20:55:26 3555 objects were saved on volumes AMON11 AMON21 AMON31

And if I only have about 850+ files where are the rest of the 3555 objects
saved coming from? OBJ(('/ARCHIVE1/*'))
Note: Turns out a bulk of them are in /ARCHIVE1/NOTES/DATA/domino and are
somewhat static.

Sometime when the server is down I should probably
- delete the *.tmp files
- move the one archive file out of the DATA directory and into the
DATA/ARCHIVE directory. Just for cleanup reasons.
- remove the full text index over the archive of the fellow who's been
gone for 3 years. (ties up 238MB in the FT alone)

Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
Dock 108
6928N 400E
Kendallville, IN 46755
[1]http://www.dekko.com

_______________________________________________
This is the Lotus Domino on the iSeries / AS400 (Domino400) mailing list
To post a message email: Domino400@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: [2]http://lists.midrange.com/mailman/listinfo/domino400
or email: Domino400-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at [3]http://archive.midrange.com/domino400.

References

Visible links
1. http://www.dekko.com/
2. http://lists.midrange.com/mailman/listinfo/domino400
3. http://archive.midrange.com/domino400