Exchange 2010 Copying the DB

My configuration for Exchange 2010 is as follows:   Exch01 = CAS\HUB\MB   Exch02 = CAS\HUB MB  I have one DAG object created and both Exch01 and Exch02 are members of that DAG.  I attempted to create a copy of the DB from Exch01 onto Exch02. My intent is to create a active\passive situation on both Exchange Servers, so if Exch01 is down for maintenance or whatever the passive copy that is located on Exch02 will become activated and email continues to flow for all users until the Exchange that is down is up and operational.

I attempted to do this with the first Exchange Server and received the following error:  An existing database is already configured with the same location "X:\Transaction Logs" for LogFolderPath.  

My paths were setup like this:  EdbFilePath  M:\DatabaseFiles\xxxx.edb     Transaction Log File Path :  X:\Transaction logs\
These paths are the Same on both servers.

How can I fix this so I have copies of each DB on the opposite Server?  From my understanding the file paths have to be the same, should I have created sub-folders and would that make it work.?
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Amit KumarCommented:
Best practice is to create separate drives is for each DB, however if you don't have much storage with you and don't have much users then do one thing.

Create subfolder on both servers with the name of DB and DB Log files. after this create DB on one server then add passive using subfolder path

You have default databases on your default path so multiple DBs can't be hosted on same folder
Jeff GloverSr. Systems AdministratorCommented:
As Amit said, you can easily fix this but creating 2 folders under each existing folder, one for your first server and  one for the second. From your last question, I see you misunderstood the directions for a DAG. When you create a copy of a database in a dag, the same path needs to exist in the mailbox server you are creating the copy on. So your first server has its database  transaction logs in x:\transactionlogs, you would need the same path open (i.e unused) in the target server. The databases can be in the same folder but transaction logs need to be in a separate folder since they use the same naming convention regardless of what database they serve. The easiest way to fix this without moving database files is to create 2 subfolders under x:\tranactionlogs  with the name  of each server (like x:\tranactionlogs\srv1 and x:\transactionlogs\srv2), then move the log files to the folder named for the server. You do this in the EMC. Go to Organizational settings and find the database under mailbox. on the right side, you should see move Mailbox database files. This will dismount the database when you move the transaction logs so you should do it off hours. You can also choose to move the database (.edb) files but unless you move them to another physical drive, it will not gain you any performance (but it may be easier to keep track of). Once the log files are in separate folders, you should be able to create a passive copy with no issues.

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