Rules for ordering licensed functions
A Base Function license is required for every base frame. All other licensed functions are optional and
must have a capacity that is equal to or less than the Base Function license.
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 Base Function license capacity, order 10 of feature code 8151 (10 TB
each up to 100 TB capacity) and 4 of feature code 8152 (15 TB each, for an extra 60 TB).
When you calculate usable capacity for the Copy Services license, use the size of each volume involved in
a copy services relationship and multiply by the size of each extent.
When you calculate physical capacity, consider the capacity across the entire storage system, including
the base frame and any expansion frames. To calculate the physical 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 36. Total physical capacity for drive-set features
Drive sizes Total physical capacity Drives per feature
800 GB flash drives 12.8 TB 16
1.6 TB flash drives 25.6 TB 16
1.92 flash drives 30.7 TB 16
3.2 TB flash drives 51.2 TB 16
3.84 TB flash dives 61.4 TB 16
7.68 TB flash drives 122.9 TB 16
15.36 TB flash drives 245.8 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 specic 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 Data storage feature activation (DSFA) website (www.ibm.com/
storage/dsfa).
• Go to the DSFA 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 DSFA 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 Data
storage feature activation (DSFA) website (www.ibm.com/storage/dsfa).
Base Function license
The Base Function license provides essential functions for your storage system. A Base Function license
is required for each storage system.
The Base Function license is available for the following license scopes: FB and ALL (both FB and CKD).
Chapter 5. Licensed functions
71
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