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Full Backup.... - 21.Jun.2008 10:43:10 AM

mohanrav

Posts: 25
Joined: 13.Feb.2008
Status: offline

Hi all....
I have a query abt the backing up exchange server DBs...
If we take a full back up of our DB's...we may lose the data at the later stage.

is it true..?
I can give u one scenario..
day 1:
Full back up has been done.
Day 2:
10 transcations occured and are stored in transaction log files which are yet to commit.Now store fails...

so we need to restore the DB's..
Im restoring my day1 back up and the automatic replay of my log files will commit the transaction to DB's along with the Day 1 back up...

here how we r losing the data...?
Pls clarify me and let me know if im wrong at any palce above..

Thanks for spending ur time here...
Goodwill,
Mohan R

Post #: 1

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RE: Full Backup.... - 21.Jun.2008 11:06:32 AM

uemurad

Posts: 5326
Joined: 7.Jan.2004
From: California, USA
Status: online

You seem to understand how the recovery process works. You will recover everything in the database from the full backup and everything in the transactional logs after.

What data do you think you are going to lose?

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to mohanrav)

Post #: 2

RE: Full Backup.... - 23.Jun.2008 6:23:38 PM

mohanrav

Posts: 25
Joined: 13.Feb.2008
Status: offline

The Transactions that occured on Day 2..?

(in reply to mohanrav)

Post #: 3

RE: Full Backup.... - 24.Jun.2008 9:34:53 AM

uemurad

Posts: 5326
Joined: 7.Jan.2004
From: California, USA
Status: online

Again, you're thinking is correct.

Depending upon what backup software you are using, you may have the option of performing an Incremental backup. This typically backs up just the transactional log files and purges those that have been committed to the database.

Then if you have to restore, you need the last Full backup and all the subsequent Incremental sets.

Or you can perform Full backups every night...

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to mohanrav)

Post #: 4

RE: Full Backup.... - 7.Jul.2008 12:20:37 AM

mohanrav

Posts: 25
Joined: 13.Feb.2008
Status: offline

Hi Uemurad,

Thanks for your reply..
am clear now... :):):)

(in reply to uemurad)

Post #: 5

RE: Full Backup.... - 7.Jul.2008 1:11:07 AM

Exchange_Geek

Posts: 424
Joined: 31.Dec.2006
Status: offline

Incase, you want to read more - please refer to the following doc.

Using Backup to Back Up and Restore Exchange Data
http://technet.microsoft.com/en-us/library/aa998870.aspx

Exchange 2003 Backup and Restore with NTBACKUP
http://www.msexchange.org/tutorials/Exchange-2003-Backup-Restore-NTBACKUP.html

Database Backup and Restore
http://technet.microsoft.com/en-us/library/bb124515.aspx

(in reply to mohanrav)

Post #: 6