Some other file placement issues to consider from the perspective of database availability
include the following:
If you are directing database backups to disk, store the backups on devices that don??™t
contain any database components
This protects the system from the potential loss of the database and the needed
backups from the failure of an I/O device.
Make sure the device used for the archive log destination doesn??™t contain any database
components or database backups
If the failure of a single device results in the loss of both database components
and archived redo logs, or backup components and archived redo logs, recovery
will be endangered.
Fault-tolerant disk arrays don??™t eliminate the need for a sound backup and recovery
strategy. Fault-tolerant storage merely reduces the likelihood of undergoing database
recovery due to the failure of a single drive. For full coverage of Oracle databases and
high availability, see Chapter 11.
Oracle and Disk I/O Resources | 163
Using RAID Disk Array Technology
One of the most powerful ways to reduce performance bottlenecks due to disk I/O is
the use of RAID disk arrays.
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