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 Transaction Log disk drive failed

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vzao
Starting Member

1 Post

Posted - 2005-08-17 : 17:08:17
Hi,

I am planning to set up the transaction log files on a separate disk drive than the database files. What will happen if the disk drive of the transaction log files failed? Also, How can I recovery the database when that happens?

Thanks in advance for your reply.

paulrandal
Yak with Vast SQL Skills

899 Posts

Posted - 2005-08-17 : 17:33:14
Your database will go suspect and will not be usable.

Various ways to prepare for this.

One way is to take daily full backups and regular (say 1/2 hourly) log backups. If the log drive fails, you lose no more than 1/2 work, plus the time to restore the backup and all the log backups.

Another way it to have a standby server using log-shipping. Many books and web-sites (including msdn.microsoft.com) have advice for high-availability and disaster recovery.

In SQL Server 2005, you can use database mirroring to have a fast fail-over system available.

Thanks

Paul Randal
Dev Lead, Microsoft SQL Server Storage Engine
(Legalese: This posting is provided "AS IS" with no warranties, and confers no rights.)
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