Microsoft Exchange server datas backup

Hi,

Could you please anyone help me in this,

I am using veritas backup exec version 10 Rev 5484 ,

I am getting this message , Job status, completed with exceptions,

Unable to open the item C:\Program Files\Exchsrvr\MDBDATA\1c3.STF - skipped.

Each time , there is different .stf files.

Is that the improtant file, is there any way to work around this issue,

Thanks in advance

I am looking forward your reply


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athavasiAsked:
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debuggerauConnect With a Mentor Commented:
While they are just temporary files that the information store should clean up afterwards, you may want to exclude this directory so that it doesn't conflict with exchange. Also, I notice it is also your MDBDATA directory and you may want your databases kept in a separate manageable location...
I believe this file comes from enabling replication and could stay open for some time, depending on your link.
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msghalebConnect With a Mentor Commented:
Hello,

I would really recommend you to do online backup and not backing up Exchange files, there is usually 2 types of backup for Exchange online and offline.

Online:

Backing up the Exchange information store directly using NTBackup or Veritas or any other software.

Here is a How to post: http://www.experts-exchange.com/Storage/Misc/Q_22114825.html

Offline:

You backup the files directly from C:\program files ...etc those files are bring used by Exchange you can use Advanced Open File Option from Veritas or VSS from Microsoft however both vendors don't recomend doing that as you will face problems like the one you have posted.

If you backup Exchange online you can restore, the store, or you can restore a single mailbox using Exchange Recovery storage group in Exchange 2003 or if you are using Veritas 11D then you can do it directly, in this case you don't need to backup the Exchange files on the NTFS partition.

Need more details? please let me know.

Thank you
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athavasiAuthor Commented:
THanks for your reply,

Could you please explain in detail about the differences , advantages between online & offline back up

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athavasiAuthor Commented:
Debuugerau,

Thanks for the reply,  If i wnat co exclude the directory as per your advise, please tell me how to do?

Thanks
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msghalebConnect With a Mentor Commented:
Hello athavasi,

Basically the online backup is backing up Exchange while everything is online and users are working, and that's the most commonly used way as it's easy to backup and restore, you need Exchange to be up and running if you are doing a backup or restore, you can restore everything, a single store or a single mailbox.

Offline backup you have to have Exchange stores disconnected and thus you will backup static files directly exactly like backing up word or excel files just pure NTFS files, and this way is used when you have exchange offline due to a corrupted store or something so Microsoft recommends you to take a copy of all edb and stm files before trying to fix the problem just in case as most repairing tools can also corrupted the store.

Here is more information:

Online Backup:

An Online backup is performed while the Information Store is still mounted and the Exchange server is operational. The Exchange is Online and available for transactions, therefore it still allows users to work without interruption. Online backups also automatically clear the database logs upon completion.

Another major advantage of the Online backup method is the fact that the Exchange store is checked for corruption at the file-system level. This check is done by verifying the checksums on each 4 KB (Kilobyte) block or page in the database. If there is a checksum failure, backup will terminate. Exchange will not allow you to back up an Exchange store with a wrong checksum in it.

Therefore, after an online backup is complete, you should check the Event Viewer to find out whether your Exchange store is corrupted. If you see a failed backup with a page read error event in Event Viewer, this may be an early indication of a problem in the database.

Offline Backup:

Offline backup is performed by shutting down the Exchange Information Store service and performing COPY procedures on the Exchange databases (Public Folder or Mailbox stores). Using an Offline Backup provides a method to restore the Exchange system to its last known state or specific "point in time", and is usually considered to be less attractive than the Online backup.

However, you may need to perform an Offline backup in the following situations:

* Your Online backup failed. You can complete an Offline backup in situations where an Online backup might fail (for example, due to an error such as a checksum1018 JET_errReadVerifyFailure).
* Your backup software does not support Exchange Online backup APIs, requiring you to dismount the Exchange 2000/2003 mailbox and public folder stores before you backup the server.

Some disadvantages to performing an Offline backup include:

* You must stop IS services (You do not need to stop the IS if you only want to backup the store, for that you can simply just dismount it. However if you want to backup the log files you do need to stop the IS service).
* Users will not be able to access their mailboxes during the offline backup.
* Log files that contain transactions already written to the database files will not be purged after the completion of the backup.
* The database is not checked for corruption during an Offline backup. You might have a corrupt database and backup sets that cannot be used to restore your server to full functionality.
* An increased chance of data loss due to files being copied to and from a backup location.

ref: http://loguinfo.blogspot.com/2007/11/exchange-backup-online-vs-offline.html

How do I backup my Exchange 2000/2003 server? Online and Offline
http://www.petri.co.il/backup_exchange_2000_2003_with_ntbackup.htm

Offline Backup and Restoration Procedures for Exchange
http://support.microsoft.com/kb/296788

If you have more questions please let me know.

MG
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debuggerauConnect With a Mentor Commented:
To exclude a directory in Veritas, just make sure the job is not running and open the selection list, which is on the bottom of the list once you select properties.
So, Active Jobs -> Modify -> Selection list
You may have profiles set up also, and you may want to modify these also.
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msghalebConnect With a Mentor Commented:
Just to add, if you exclude the directory u may not get the error any more, but if you need to have a good Exchange backup as per Microsoft recomendations, please exlucde all Exchange directories form the backup and back it up using the online backup, u may need Exchange agent from Veritas or u can use NTBackup and then Veritas.

Let me know if u need more details.

MG
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athavasiAuthor Commented:
Thanks for the replies guys and info in regards with online back up,

I belive am doing online back up ,( mon- fri) 5 days - am taking total information store backup ,

6th day ( sat)- am taking individual mailboxes

I am just getting the error message as mentioned, is there any way to fix this issue without excluding the directory as you guys advised,

Please let me know,

Thanks

AT
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msghalebConnect With a Mentor Commented:
Hi,

Unfortunately not, Microsoft recommends that you exclude the MDBDATA as you don't need it as NTFS to restore Exchange.

Ref: http://technet.microsoft.com/en-us/library/bb124669(EXCHG.65).aspx

Thank you.

MG
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debuggerauConnect With a Mentor Commented:
I know I said previously that you should exclude it, but it will complete with an exemption and continue to backup.
I think its not so much an error as a warning, but I still like results in green...

Previous article resolved here:
http://www.experts-exchange.com/Storage/Misc/Q_20848345.html
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