Mailbox Database failover in Ex2010 RC

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M

Magernisha

Hi All

I have one doubt in Ex2010 DAG concept. My setup is like below
1. Ex14dc - which contains DC,HUB & CAS
2. NodeA - Mailbox role installed
3. NodeB - Mailbox role installed

Questions

1. If IS service get stopped in NodeA will all the databases in NodeA get failover to NodeB? (i have DB copy in NodeB)
2. If manually i am dismounting one DB in NodeA will the failover happen to NodeB?

Can anyone please clear my doubt.

Nisha
 
M

Magernisha



Hi Amit

Thanks for your reply. but in my test environment its not happening. When i stop the IS service in any one of the node then the fail over is not happening at all. After stoping the service i tried to make a copy DB as a active one at that time i am getting the following error.

------------------------------------------------------Microsoft Exchange Error
------------------------------------------------------Cannot activate database copy 'Activate Database Copy...'.

Activate Database Copy...
Failed
Error:
An Active Manager operation failed. Error: An error occurred during discovery of the database availability group topology. Error: The database action failed. Error: [Active Manager] An exception occurred: An error occurred while trying to validate the specified database copy for possible activation. Error: Database copy 'MDB3' on server 'NodeA.test.in' has content index catalog files in the following state: 'Failed'... [Database: MDB3, Server: NodeA.test.in]

An Active Manager operation failed. Error: An error occurred while trying to validate the specified database copy for possible activation. Error: Database copy 'MDB3' on server 'NodeA.test.in' has content index catalog files in the following state: 'Failed'..

------------------------Note - I can switch over the server & fail over is happening when i down one node.

Can u pls help me on this?
 
L

Lee c y

Try killing the store.exe process on the active node instead of stopping IS gracefully.
 
B

Brian Day MCITP [MVP]

For 1. At the end of your error it sounds like your content index is in a failed state. If the CI is in a failed state, then the DB copy will not mount. You may need to reset the content index. There is a powershell script in the .\scripts directory to do this.

For 2. If you are dismounting a DB then you are flat out telling Exchange "I want this database dismonted so it cannot be accesse." and Exchange is doing just that for you and leaving the other copies unmounted as well.Brian Day / MCSA / CCNA, Exchange/AD geek.
 
C

CKZ-NLD

1. Suspend database copy
2. activate database copy: wait for the resync

It should work when status changed to HEALTHY and all indexes are ok.
 
J

jdatann

1. Suspend database copy
2. activate database copy: wait for the resync
It should work when status changed to HEALTHY and all indexes are ok.

I was getting the same error message above and doing as CKZ-NLD mentions fixed the problem. I was then able to move the active mailbox DB to a different node.

thanks
 
J

Jiří Janata

For 1. At the end of your error it sounds like your content index is in a failed state. If the CI is in a failed state, then the DB copy will not mount. You may need to reset the content index. There is a powershell script in the .\scripts directory to do this.
For 2. If you are dismounting a DB then you are flat out telling Exchange "I want this database dismonted so it cannot be accesse." and Exchange is doing just that for you and leaving the other copies unmounted as well. Brian Day / MCSA / CCNA, Exchange/AD geek. Hi, which skript can I use for reset content index? Thank you.
 
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