IBM DS8700, Introduction And Planning Manual

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Note: Retrieving feature activation codes is part of managing and activating your
licenses. Before you can logically configure your storage unit, you must first
manage and activate your licenses.
At the DSFA website, you manage and activate the function authorizations on a
per-image basis. Because Model 941 and Model 951 storage units contain only one
image, your management and activation tasks actually apply to the entire storage
unit.
When you use the DSFA website to change the license scope after a licensed
function has been activated, a new feature activation code is generated. When you
install the new feature activation code into the machine, the function is activated
and enforced using the newly selected license scope. The increase in the license
scope (changing FB or CKD to ALL) is a nondisruptive activity but takes effect at
the next machine IML. A lateral change (changing FB to CKD or changing CKD to
FB) or a reduction of the license scope (changing ALL to FB or CKD) is also a
nondisruptive activity and takes effect at the next machine IML.
Ordering licensed functions
After you decide which licensed functions to use with your storage unit, you are
ready to order the functions.
Licensed functions are purchased as DS8000 function authorization features.
To order licensed functions, use the following general steps:
1. Order the operating environment license (OEL) features that support the total
physical capacity of your storage unit.
2.
Order optional licensed functions for your storage unit.
Ordering rules for licensed functions
An operating environment license (OEL) is required for every DS8000 base model.
All other licensed functions are optional.
For all licensed functions, you can combine feature codes to order the exact
capacity that you need. For example, if you determine that you need 23 TB of
point-in-time capacity, you can order two 7253 features (10 TB each) and three 7251
features (1 TB each).
Note: If you are activating features for any of the licensed functions, such as Copy
Services, all the features must have the same capacity, including the
operating environment license feature.
When you calculate physical capacity, consider the capacity across the entire
storage unit, including the base model and any expansion models. To calculate the
physical capacity, use Table 39 to determine the total size of each regular disk drive
feature on your storage unit, and then add all the values.
Note: Standby CoD disk drive features do not count toward the physical capacity.
Table 39. Total physical capacity of each type of disk drive feature
Size of Disk Drives Total Physical Capacity Disk drives per Feature
146 GB 2336 GB 16
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Introduction and Planning Guide