Calculating the maximum number of pairs

Use the following values to calculate the maximum number of pairs:

• The number of bitmap areas required for pair creation.
• The total number of available bitmap areas in the storage system, or the number of available bitmap areas calculated in Calculating the number of available bitmap areas.

  Calculate the maximum number of pairs using the following formula with the total number of bitmap areas in the storage system (or the number of available bitmap areas) and the number of required bitmap areas, as follows:

  maximum-number-of-pairs-that-can-be-created = floor(total-number-of-bitmap-areas-in-storage-system / number-of-required-bitmap-areas)

Calculate the maximum number of pairs using the already calculated necessary number of bitmap areas, and the number of bitmap areas in storage systems listed in the following table. The number of bitmap areas in a storage system is determined by the availability of shared memory extended for GAD and the storage system model.