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Moving Exchange databases and/or transaction logs to another drive

Medium Priority
Last Modified: 2008-03-06
Dear experts,

Just a quick question to those who has done it before. I think I know what to do regarding moving the database and log files. However I would like to have some idea of how long it would take moving a 7Gb database to another drive on the same disk? Also, is the process fully automated and no user interaction required?

I am planning to do it in the coming weekend. Just wonder if I need to interact with the process once I clicked the OK button.

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You can do this from the General tab for the storage group, and the Database property page of the store's properties.  Simply click the browse button and specify the new location.  Doing this will dismount the entire storage group (for the logs) and the store (for the individual database) and users will not be given any warning.

ESM will take care of the rest of the process and should remount the stores when complete.  This could take a long time depending on your hardware.  Assuming you're doing a full backup before this the log file size should be minimal.  Something worth doing is creating a test store and moving the .edb and .stm files to a new volume.  You can then use this to extrapolate moving the large database, i.e. if 700 MB takes 18 minutes then 7 GB should take around 3 hours.

Vishal BreedProgram Manager

Have a look at this MS link


Guys thanks for reply but I am hoping someone can tell me the approx time it takes to move a 7Gb database.

It all depends on your storage hardware.  I can do it in 5 minutes with my SAN but it could take and hour on a direct attached SATA drive.  This is why testing with a smaller test database is a good idea.

If your goal is to minimize downtime, just perform a full backup so the logs are truncated, then move the log files to the new volume.  Then just create a new store with the database located on the new volume.  Now all you need to do is move the mailboxes from the old store to the new one.  The only downtime will occur to the individual mailboxes as they are being moved, i.e. with 8 threads running Exchange can move 8 at time and only these mailboxes will be affected at any given time.  It will also have the benefit of effectively performing an offline defrag of the database to remove any whitespace.  Once this is done dismount the old store and delete it, then you can delete the .edb and .stm files from the file system.
I am after the approximate time to move a 7Gb exchange database to another hard drive but no one seems to be able to give me any clear indication. Close question.

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