ADSM-L

Re: [ADSM-L] best backup method for millions of small files?

2009-04-30 01:08:07
Subject: Re: [ADSM-L] best backup method for millions of small files?
From: Steven Harris <sjharris AT AU1.IBM DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 30 Apr 2009 14:54:12 +1000
Mehdi


I think you can use journalling.

My copy  of the TSM 5.3 WindowsBackup-Archive Clients Installation and
User’s Guide  has an appendix C describing how to configure the Journal
service.  You also need to look at appendix B for the dsmcutil command,  or
use the GUI wizard.


Regards

Steve

Steven Harris
TSM Admin, Sydney Australia



                                                                           
             Mehdi Salehi                                                  
             <iranian.aix.supp                                             
             ort AT GMAIL DOT COM>                                             
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Hi,
There is an NTFS filesystem in windows with 20 millions of small files less
than 20 KB each. The total size of the filesystem is less than 300GB.
I have not tried incremental backup, because that would be a nightmare.
Again, inc backup is not a good choice because the long restoration time is
not acceptable us.
I tested the snapshot image backup and satisfied with backup time. Now the
problem is how to perform the incremental for this image backup.
Unfortunately "incremental-by-date of last image" scans the whole files to
filter which files must be in the backup list and would take a tremendous
amount of time. This is not acceptable as well.
The ideal behavior that I expect from TSM is journal based incremental
backup for image which is apparently not supported by TSM 5.3.
more info:
-the change rate for this filesystem is about 20 thousands of files per day
-TSM version is 5.3

What do you recommend for this case? Please include TSM 6.1 featues if
exist.

Regards,
Mehdi Salehi