IBM DS8700, Введение и руководство по планированию

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If the zDDB LIC feature key is installed and enabled and a volume group type
specifies either FICON or ESCON interfaces, this volume group has implicit access
to all FB logical volumes that are configured in addition to all CKD volumes
specified in the volume group. Then, with appropriate software, a z/OS host can
perform backup and restore functions for FB logical volumes configured on a
storage facility image for open systems hosts.
The hierarchical storage management (DFSMS-HSM) function of the z/OS
operating system can manage data that is backed up. If you have not installed or
enabled the zDDB LIC feature key, during a DS8000 power on sequence, the logical
volumes and the LSSs that are associated with this licensed feature are offline to
any FICON or ESCON interfaces. If a zDDB LIC feature key is disabled when it
was previously enabled, the logical volumes and the LSSs that are associated with
the licensed features remain online to any FICON or ESCON interfaces until the
next power off sequence, but any I/O issued to these logical volumes is rejected.
The key data in a zDDB LIC feature key contains an allowed capacity value. This
value refers to the total amount of physical capacity configured into any FB real
rank on the storage facility image. The allowed capacity is required to be set to
either 0 or to the maximum value, which the LIC feature is on or off.
To validate a zDDB feature key, the new LIC key must meet the following criteria:
v The specified storage type must be FB storage only
v The specified capacity is either zero or the maximum capacity value
When a zDDB LIC feature key is installed and the LIC feature key has a capacity
greater than 0 bytes, then the DS8000 enables the zDDB function and notifies any
attached hosts through the appropriate interface. If a zDDB LIC feature key that is
disabled is installed while the zDDB facility is enabled, the LIC feature key is
accepted, but the zDDB facility is concurrently disabled. While the feature is
disabled, logical volumes that are associated with this feature are either offline to
FICON or ESCON hosts or I/O issued to logical volumes associated with the
feature are rejected on FICON or ESCON interfaces.
Feature codes for z/OS Distributed Data Backup
Use either of these optional z/OS Distributed Data Backup feature codes to enable
data backup of open systems from distributed server platforms through a System z
host.
Table 48. License z/OS Distributed Data Backup function indicator
License function
Hardware machine type
239x indicator feature Hardware machine type 242x
indicator feature
z/OS Distributed Data
Backup Indicator 7094 and 0714 Model LFA 7094
Thin provisioning LIC key feature
To use the thin provisioning facility with extent space-efficient logical volumes,
you must have the thin provisioning LIC feature key.
The thin provisioning LIC feature enables the following functions for the storage
type that is indicated by the LIC feature key:
v
The creation of extent space-efficient logical volumes
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Introduction and Planning Guide