Problem backing up Exchange datastore

We are running Exchange 2003 on Server 2003.  In performing a backup (using ntbackup, as well as Veritas Backup Exec V10.D) , the operation fails roughly at the same place byte-wise.  The event log error, and ntbackup logfile shows:

Error: The device reported an error on a request to write data to media.
Error reported: Unknown error.
There may be a hardware or media problem.
Please check the system event log for relevant failures.
The operation was ended.
Backup completed on 3/29/2007 at 10:01 AM.
Directories: 0
Files: 1
Bytes: 502,200,092
Time:  6 minutes and  21 seconds

Error: xxxxMAIL\Microsoft Information Store\First Storage Group is not a valid drive, or you do not have access.
pa02adminAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Exchange_AdminCommented:
Are you backing up to a file?
If so is the location of the backup file on a NTFS disk?
If it is on a FAT32 disk then the maximum size of a file is 4 GB.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
AdamRobinsonCommented:
It actually looks more like your BackupExec process doesn't have permission to the IS, given you only show ~500 MB there before it fails.  Try changing to an account with full privilege from within BE and see if it will go through on a test run.  If it does, you've found your problem.

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Storage Software

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.