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date: Thu, 11 May 2006 09:07:49 -0400,
group: microsoft.public.exchange2000.information.store
back
Re: Info Store questions
For your first question, I was going to ask about the size of the
streaming file, but the streaming file didn't exist in 5.5 So I'm not
sure how to explain those size discrepancies.
As for the backup question: it depends on how you do the backup.
The logs would be flushed to the database only if you dismount the
store completely and do an offline backup.
Online backups require logs. If you have a 50 GB database, then simply
reading and transferring 50 GB will take such a long time that there
will be transactions done in the meantime.
If the backup is at the 20th GB, then any transactions written to the
last 30 GB (not yet backed up) can be written with no problems, and
you'll seem them in your backup. Transactions that write to the first
20 GB won't be in the database file you're backing up, but at restore
ytie you still want (need) that data. So at the end of the database,
the backup program will back up the log files that were created in the
meantime. So a full backup REQUIRES the log files created during the
backup.
(I'm purposefully ignoring something called the 'patch file' which
went away with Ex2000 SP1 (or was it SP?), because it's just messy. :)
When you restore the database, it will need to play through those log
files. I'm not sure if there are events in the event log corresponding
to the replaying of the log files.
Does that help?
-martin
Boring-but-necessary-disclaimer: This posting is provided "AS IS" with
no warranties, and confers no rights.
In article ,
Tester wrote:
>
>Hi there,
>I noticed when I restore private information store from backup the size of
>priv.edb file is much smaller(38 MB) comparing to the same database size
>when I restore mailboxes(circa 4.5 GB)on the server, although IS contains
>mailboxes, can someone explain me the difference? I both cases mailboxes are
>restored OK with all the data.
>Secondly if I restore IS from a full backup-so logs are flushed as I
>understand- are there any logs to replay when I start the Info Store service
>after the restore? Because it takes circa 10...15 minutes until it createds
>a temp.edb file in mdbdata directory and I was wondering what causes this
>delay. We use Exchange 55.
>Thanks a lot, Calin
>
>
date: Fri, 12 May 2006 06:39:29 +0000 (UTC)
author: Martin Chisholm [MSFT]
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