Defining space for each OLDS

When defining the size of each OLDS, you also need to consider the size and location (DASD or tape) of the SLDS. If the SLDS is on tape, consider the size of an SLDS volume and how often you intend to archive the OLDS.

If the SLDS is on DASD, you should allocate enough space to contain all of the OLDSs to be archived. You might want to assign enough space to each OLDS so it fills an SLDS volume when it is archived. Or you might want to make each OLDS half the size of an SLDS volume, so you can initiate archive when two OLDSs are full.

Also, when defining the size of each OLDS, consider the amount of data you want to have online for doing such tasks as emergency restart or restarting a BMP. For example, if your system has a lot of activity and processes many transactions, consider defining larger OLDSs; then the records necessary for an emergency restart will more likely be online.