Progress
Database Administration
Guide and Reference
Guidelines For Choosing Storage Area Locations
When you choose the locations for your database storage areas, consider the following:
- Protect against disk failures by creating the after-image storage area on a separate physical disk from the disks that store the database control and primary recovery areas.
Never store the primary recovery area extents or data extents on the same physical disk as the after-image extents. Failure of the disk results in the loss of all necessary recovery data.
- Improve performance by creating the primary recovery area on a separate disk from the disk that stores the database control area and its extents.
- If using two-phase commit, create the transaction log area in the same directory as the database control area to simplify management.
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