Storing Central Databases On Disk

You can improve SU performance by storing central databases on disk in the following manner:

• Place different databases on different sink machines.
• Store central databases on disk packs that have little activity other than SU.
• Store the databases on volumes not used for paging or swapping, and do not store them on the SYSRES volume.
• Store each database on a separate volume. If this is not possible, distribute the databases across as many volumes as possible.
• Do not drive the volumes higher than their natural I/O rates. You can obtain the natural I/O rate for your device type from the appropriate IBM publication.