IBM DS8700, Введение и руководство по планированию

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configured into any real rank of the specified storage types on the storage facility
image. The allowed capacity is required to be set to either 0 or to the maximum
value, indicating whether the LIC feature is on or off.
To validate an Easy Tier LIC feature key, the allowed capacity indication must
meet all of the following criteria:
v
The specified storage type must be fixed block (FB) or count key data (CKD).
v The specified capacity must be either zero or the maximum capacity value.
When an Easy Tier LIC feature key is installed, if the Easy Tier functions are not
enabled and the license feature key has a capacity greater than 0 bytes, then the
storage facility image enables the Easy Tier functions.
If the LIC feature key that is disabled, while the Easy Tier functions are enabled,
the disabled LIC feature key is accepted and the Easy Tier functions are disabled
immediately. Any extent migrations that were in progress during disablement are
either nullified or completed. Any extent migrations queued later are stopped and
any requests to initiate a volume migration or an extent pool reconfiguration are
rejected.
Point-in-time copy function (239x Model LFA, PTC license) and
FlashCopy SE Model SE function (239x Model LFA, SE license)
The point-in-time copy licensed function model and features establish the extent of
IBM authorization for the use of the point-in-time copy licensed function on your
storage unit.
The IBM System Storage FlashCopy function is a point-in-time licensed function.
Feature codes for point-in-time copy
When you order point-in-time copy functions, you specify the feature code that
represents the physical capacity you want to authorize for the function.
The point-in-time copy (PTC) license feature codes enable the use of the
point-in-time copy licensed function.
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.
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 and three 7251 features.
Table 42 on page 131 provides the feature codes for the point-in-time copy
function.
Note: If you have an active point-in-time feature and replace it with an inactive
feature, “Managing a licensed feature” on page 187 provides information
should you want to use the feature again.
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Introduction and Planning Guide