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Cannot access mailstore after data drive filled

Hello all,

   I woke up an hour and a half ago ( 4am EST ) to use the restroom and saw a text from my Tier 1 stating that mailflow is down because somehow we missed the data drive filling up completely. I dont knwo the actions they took but when I signed on I found 800 MB free.

    That fix was simple, the machine is a VM so I expanded that drive and rebooted. Now I cannot access my mailbox and I assume this is true for everyone. I see errors in app log stating that Activesync has the same issue ( cant access mailstore ). I have never had to resolve this before and am seeking advice on how to proceed. I am posting this before even googling , but nevertheless I would appreciate expert advice regarding this.

2008 R2 w/ exchange 2010 sp1 latest roll up.

Thank you very much in advance,
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sarasotamac
Asked:
sarasotamac
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
So if the mailbox database is dismounted check the amount of free space on the Drives.

As the database was dismounted due to drive issues so the database would be clean shutdown. So you can move all Transaction logs to another drive free up some space on the drive and then mounted the mailbox database ..... this should work fine.

- Rancy
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Also make sure all the Exchange services are up and running ?
However if you face any issues please respond back :)

- Rancy
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Please check the event viewer thoroughly for the following events

Event Id - 9539 & 9175 will be generated during store dismount ,

Event Id 482 will generate in case if the exchange store is dismounted due to low disk space.

- Rancy
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sarasotamacAuthor Commented:
Ohhh! Im sorry if i wasn't clear - We are dealing with what WAS a 45 GB drive and is NOW a 55GB drive. Thus adding 10GB to the drive the mail DB is on. I'm really not too sure what may be wrong now, all services are running and event log errors look un-related.

Wait one thing I did just notice is that our DR server is referenced as master. Oh. So... that is weird to me because that machine is also a VM and I shut it down, so that I could also add 10GB to that drive. Interestingly enough, that DR exch server had 2.4 GB free , so it never crashed. The replication queu was 0, so it doesnt look to me like our primary server filled up gradually from mail , 1.6 GB within an hour is quite alot for us.

I digress, I fired up the DR server and now my outlook is connected ( vpn ).

 Could you perhaps guide me through switching the master server in out two server DAG group to be my primary server again? A coworker does this sorta thing for our clients often, I think he was explaining to me that you need to do this on the cluster service side of things - Does that sound accurate at all?
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
You can right click on the Mailbox database To move an active database copy to another DAG member using the EMC is accomplished by right-clicking on the respective database(s) and selecting Move Active Mailbox Database in the context menu

Moving the Active Database Copy to another DAG Member (aka Switchover)
http://www.msexchange.org/articles_tutorials/exchange-server-2010/high-availability-recovery/uncovering-exchange-2010-database-availability-groups-dags-part4.html


- Rancy
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Exchange 2010 does uses Windows cluster only as a base no Resources and stuff so dont think you will find much there .... however if your looking more on the cluster side you can run 2 commands from the "Command Prompt" and share or proceed as you would want.

cluster group
cluster res

- Rancy
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sarasotamacAuthor Commented:
Firstly - All of your information was actually very pertinent to my situation. In order, I essentially performed the same myself. However the last step was this one marked as 'answer'.

 For reference, I had added 10 GB to that data drive since the machine is virtual. However your advice about logs will come in handy. Thanks to your event ID's I now know that my issue was that my primary server didnt fail - it took itself offline so thats why when it was the ONLY mail server turned on it still wouldnt fire up.

Thank you !
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Arent you having good backups ... if so ideally your drive of 45GB shouldnt fill up :(

- Rancy
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