Rules for ordering licensed functions

A Base Function license is required for every base frame.

For all licensed functions, you can combine feature codes to order the exact capacity that you need. For example, if you require 160 TB of capacity, order 10 of feature code BAA0 (10 TB each up to 100 TB capacity) and 4 of feature code BAA1 (15 TB each, for an extra 60 TB.

If you order the Copy Services license, you must order the Copy Services license for the provisioned capacity of all of the volumes that will be used for the Copy Services relationships.

When you calculate raw capacity, consider the capacity across the entire storage system, including the base frame and any expansion frames. To calculate the raw capacity, use the following table to determine the total size of each regular drive feature in your storage system, and then add all the values.

Table 1. Total raw capacity for drive-set features
Drive sizes	Total raw capacity	Drives per feature
1.6 TB NVMe drives	25.6 TB	16
1.9 TB NVMe drives	30.4 TB	16
3.8 TB NVMe drives	60.8 TB	16
7.6 TB NVMe drives	121.6 TB	16
4.8 TB FlashCore Modules ( FCM)	76.8 TB	16
9.6 TB FCM	153.6 TB	16
19.2 TB FCM	307.2 TB	16

Rules for removing a licensed function

The initial enablement of any optional DS8000 licensed function is a concurrent activity (assuming that the appropriate level of microcode is installed on the machine for the specific function). The removal of a DS8000 licensed function is a nondisruptive activity but takes effect at the next machine IML.

If you have a licensed function and no longer want to use it, you can deactivate the license in one of the following ways:

Order an inactive or disabled license and replace the active license activation key with the new inactive license activation key at the IBM® Entitled Systems Support (ESS) website.
Go to the ESS website and change the assigned value from the current number of terabytes (TB) to 0 TB. This value, in effect, makes the feature inactive. If this change is made, you can go back to ESS and reactivate the feature, up to the previously purchased level, without having to repurchase the feature.

Regardless of which method is used, the deactivation of a licensed function is a nondisruptive activity, but takes effect at the next machine IML.

Note: Although you do not need to specify how the licenses are to be applied when you order them, you must allocate the licenses to the storage image when you obtain your license keys on the IBM® Entitled Systems Support (ESS) website.