IBM states that once you install journal based backups that they are NOT meant
to replace incremental backups. They recommend running a regular old fashioned
incremental to make sure all files are backed up on a regular basis ( once a
week or once every tow weeks ). Journal based backups are not perfect. If the
service goes down on the client or the client reboots ( because that NEVER
happens in the Windows ) , and you didn't put the service to auto start or if
it doesn't start for whatever reason, TSM will default to running an
incremental to save you, so that long backup time for that night will come back
for that backup session. Also if TSM detects that the service went down for a
short while during the day, then this essentially will have corrupted the
flatfile backup list because TSM will not know if any files were updated during
that outage . What happens when the next backup runs ? It will not be a journal
based backup, but a typical incremental will run.
Rich
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
James Choate
Sent: Wednesday, May 07, 2008 2:15 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Journal Engine install on Windows
Very cool..................
I can't believe the difference it makes.
>From 4 hours to 8 minutes. Unbeleiveable.........
When are they coming out with one for Linux? I see only AIX & Windows
available.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Kelly Lipp
Sent: Wednesday, May 07, 2008 12:11 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Journal Engine install on Windows
No, you are good to go. What that statement assumes is that you installed the
Journal Engine before you ever ran the backup and that you shouldn't be
surprised to see a longer than normal backup take place.
Cool, huh? Those guys at IBM...
Kelly Lipp
CTO
STORServer, Inc.
485-B Elkton Drive
Colorado Springs, CO 80907
719-266-8777
www.storserver.com
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
James Choate
Sent: Wednesday, May 07, 2008 12:08 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Journal Engine install on Windows
I installed the backup archive client (5.4.2.0) on Windows 2003 Server.
I ran a full backup of 2.7 TB.
I scheduled the regular incremental backups to run nightly. I noticed that the
backup was taking anywhere from 4 - 9 hours to complete. The client was
scanning thru approximately 5 million files to backup 40GB - 150GB a night.
I installed the Journal engine on the Windows server, and now I notice that I'm
spending 8 minutes - 30 minutes a night to backup the client.
I ran across a couple posts that say the following:
"you'll need a full backup after the journal engine starts"
What does that mean based on me having installed the journal engine after I had
already done a full backup? Does that mean I need to delete my filespaces, and
do a brand new full incremental?
If anyone can clairify this for me I would greatly appreciate it.
Thanks,
James Choate
Standard Life : 175 ans au coeur de nos vies
Standard Life: Part of our lives for 175 years
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