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Exchange 2010 log location
I have my Exch 2010 databases setup on Raid 1 drives and DAG for failover. I have my Tlogs on the same Raid1 drive as the database. I believe Microsoft best practice is to seperate logs onto another volume. Would this be true in my situation or leaving the logs with the DB on RAID 1 for Exchange 2010 is ok?
Last Comment
Adam Brown
Generally, the reason for having transaction logs on a different drive is for a situation where the drive containing the database fails it doesn't also take the transaction logs and you can restore the database to the minute of failure. With a RAID 1, you have some protection from this situation because the database and logs are being mirrored. It isn't an optimal solution, but it will be okay if you can't add an additional RAID 1 to separate the database and logs.
ASKER
what would happen if the partition that holds the logs failed?
You would have to run a repair on the Database to clean it up, then remount it. The logs contain a record of all transactions that have occurred since the last full backup. The data in the logs has usually already been committed to the actual database, but is stored in the logs for redundancy in case the database fails and the last full backup has to be restored. So if the logs drive fails, you don't really lose any data, but Exchange will shut down and the database will go into a dirty shutdown state, which has to be repaired with eseutil.
ASKER
1 last question, If the log partition failed in Exch 2010 and your running DAG, would the databse then failover to the redundant database and the log shipping/seeding tlogs still be intact, thus avoiding a DB shutdown?
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ASKER
great thxs
Exchange
Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.
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