Solved

I've run into a big problem with a very large Exchange Database on NTFS drive

Posted on 2012-12-23
14
1,349 Views
Last Modified: 2013-01-03
My Exchange 2010 SP2 stores are very big. 1.4tb, 1.3, 1.7tb and have run into this problem.

Information Store (8580) DBNAme: An attempt to write to the file "F:\Data\DBName.EDB" at offset 315530739712 (0x0000004977190000) for 32768 (0x00008000) bytes failed after 0 seconds with system error 665 (0x00000299): "The requested operation could not be completed due to a file system limitation ".  The write operation will fail with error -1022 (0xfffffc02).  If this error persists then the file may be damaged and may need to be restored from a previous backup.

http://blogs.technet.com/b/mikelag/archive/2011/02/09/how-fragmentation-on-incorrectly-formatted-ntfs-volumes-affects-exchange.aspx

Anyone have any suggestions on how I can stop the file from corrupting? (It's already happened to the 1.4tb database).

I could move the file away from the drive and back again but to copy a 1.3tb file is estimated at least a day in each direction.  Any ideas?

Cheers.
Paul.
0
Comment
Question by:looops
  • 5
  • 5
  • 4
14 Comments
 
LVL 25

Expert Comment

by:Tony Giangreco
Comment Utility
I would do whatever is possible to reduce the size of that mailstore. it sounds like you have hit a limitation or the server just can't handle the load of it and you are receiving this error for some other reason that isn't apparent.

Possibly move some of the mailboxes into another storage group to reduce the sg size. You also might want to look at a Very Good 3rd party manual defrag and cleanup utility.
0
 
LVL 25

Expert Comment

by:Tony Giangreco
Comment Utility
Make sure you take a full backup first.
0
 
LVL 37

Expert Comment

by:Neil Russell
Comment Utility
Is this on a physical or virtual machine?
0
 

Author Comment

by:looops
Comment Utility
This Xmas I'm moving loads of mailboxes out of the store and hoping the online defrag reduces the edb size. It's a physical server thanks.
0
 
LVL 25

Expert Comment

by:Tony Giangreco
Comment Utility
Sounds like a good plan. Let us know what happens.
0
 
LVL 37

Accepted Solution

by:
Neil Russell earned 500 total points
Comment Utility
Nope!

An ONLINE defrag will free NO SPACE at all.

to free space your best AND SAFEST bet is to create a new database and move ALL of the mailboxes from one database into the NEW database and then delete the old database.

An OFFLINE defrag is a pure waste of time and effort with exchange 2010 AND puts your data at risk while you do it.

Just move ALL mailboxes from a database and then delete the old one.
0
 

Author Comment

by:looops
Comment Utility
It's not the disk space so much but the fragmented huge file reaching the ntfs limit.
0
Free Gift Card with Acronis Backup Purchase!

Backup any data in any location: local and remote systems, physical and virtual servers, private and public clouds, Macs and PCs, tablets and mobile devices, & more! For limited time only, buy any Acronis backup products and get a FREE Amazon/Best Buy gift card worth up to $200!

 
LVL 37

Expert Comment

by:Neil Russell
Comment Utility
And both of those issues are addressed by moving mailboxes to a fresh database on a fresh drive. You cure all ills in one.
0
 

Author Comment

by:looops
Comment Utility
I'll go with this thanks.
0
 
LVL 37

Expert Comment

by:Neil Russell
Comment Utility
Personaly, I might add, I would go for splitting this single database down to 2 if possible. Do you have enterprise license?
0
 

Author Comment

by:looops
Comment Utility
No it's Std which is a constaint. I have another box now running the mailbox service so will flip users back and forth.
0
 
LVL 25

Expert Comment

by:Tony Giangreco
Comment Utility
Before doing anything, look at your servers and find one drive that's quck, has at least enough free space as two times your mailstore size, then perform an off-line defrag there. It sounds like it will take a while based on your mail store size. We did this on a smaller mail store a few months ago. It was only 60 gig, but it took about 10 hours because it was highy fragmented.

Hope this helps!!!
0
 

Author Closing Comment

by:looops
Comment Utility
Not really a solution to my immediate problem but I know damned good advice when I read it.
0
 
LVL 37

Expert Comment

by:Neil Russell
Comment Utility
@TG-TIS

With exchange 2010 you should never need to do an offline defrag. Your taking your whole exchange database offline for 10+ hours at a time when all you need to do is move all users to a new/other database and then delete the old one.  No downtime, no user interuption, no risk of corruption.

Much much safer and simpler.
0

Featured Post

What Security Threats Are You Missing?

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Disabling the Directory Sync Service Account in Office 365 will stop directory synchronization from working.
Scam emails are a huge burden for many businesses. Spotting one is not always easy. Follow our tips to identify if an email you receive is a scam.
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders. Click on Start and then select Computer to view the available drives on the se…
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

6 Experts available now in Live!

Get 1:1 Help Now