Hi

When using large fileservers, as the one described below, it would be a good idea to start using the journaled based backup.

The reason it takes a lot of time, is that it has to inspect ALL files, to be able to decide which files to be backed up.

Using the journal based backup, the client has a journal that is updated in real-time for all files that are changed since last backup.

This means that when the client is to start the backup, it doesn't have to inspect the files, just look in the journal.

This save a lot of time on servers where you have 50.000+ files.

Best Regards

Daniel Sparrman

-----------------------------------
Daniel Sparrman
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Zosimo Noriega <znoriega AT ADNOC DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
2002-01-20 09:36 ZE4
Please respond to "ADSM: Dist Stor Manager"

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Subject: why incremental backup process took a long time?

the incremental backup took a long time to complete the process not same as
before, see the details below:

02 11:11:23 Total number of objects inspected:  498,544
02 11:11:23 Total number of objects backed up:       96
02 11:11:23 Total number of objects updated:          2
02 11:11:23 Total number of objects rebound:          0
02 11:11:23 Total number of objects deleted:          2
02 11:11:23 Total number of objects failed:          12
02 11:11:23 Total number of bytes transferred:     1.21 GB
02 11:11:23 Data transfer time:                  119.12 sec
02 11:11:23 Network data transfer rate:        10,714.47 KB/sec
02 11:11:23 Aggregate data transfer rate:         32.27 KB/sec
02 11:11:23 Objects compressed by:                    0%
02 11:11:23 Elapsed processing time:           10:59:11

from the dsmched.log, it contains several entries of this messages:

01/20/2002 02:17:46 ANS1898I ***** Processed    88,000 files *****
01/20/2002 02:18:49 ANS1898I ***** Processed    88,500 files *****
01/20/2002 02:18:49 ANS1898I ***** Processed    89,000 files *****
01/20/2002 02:19:52 ANS1898I ***** Processed    89,500 files *****
.
.
.
.
01/20/2002 xx:xx:xx ANS1898I ***** Processed    nn,nnn files *****


what was the cause of this?

any help from you is really appreciated, regards

Zosi Noriega