Chapter 8. Optional feature codes for the DS8000
The DS8000 is designed to meet or exceed the storage requirements of a broad
range of operating environments.
There are many features that are enabled to meet your data management
requirements. The following two areas are particularly useful for data
management.
v Parallel Access Volumes (PAV) used for System z or S/390 environments
v Advanced Copy Services functions
Parallel
Access Volumes
This feature allows multiple System z or S/390 jobs to execute in parallel
and queue management on the DS8000. Dynamic PAVs autonomically
reconfigure the storage subsystem that is based on your workload.
Advanced Copy Services functions
The advanced Copy Services functions are sometimes referred to as the
IBM System Storage Resiliency Family. These Copy Services functions offer
a variety of data duplication, data migration, and disaster recovery
solutions that are supported on open systems and System z or S/390 hosts.
The following features are key components:
v Point-in-time copy, also known as FlashCopy
v Remote Mirror and Copy, previously known as Peer-to-Peer Remote
Mirror (PPRC)
– Metro Mirror, previously known as Synchronous PPRC
– Global Mirror, previously known as Asynchronous PPRC
– Global Copy, previously known as PPRC Extended Distance
– Metro/Global Mirror, a combination of Metro Mirror and Global
Mirror functions
v
z/OS Global Mirror, (previously known as Extended Remote Copy
[XRC])
Note: z/OS Global Mirror (previously known as Extended Remote Copy
or XRC) provides a long-distance remote copy solution across two
sites for open systems and System z or S/390 data using
asynchronous technology. It is based on the existing Copy Services
functions called Global Copy and FlashCopy and additional new
functions that form consistency groups across one or more storage
units to manage and control Global Mirror sessions.
Using parallel access volumes for System z and S/390 hosts
This section provides the following guidelines for using parallel access volumes
(PAVs) in a System z or S/390 environment:
v An overview of PAVs
v PAV requirements
v An overview of the input/output configuration program (IOCP)
v Guidelines for defining the logical control units
v Guidelines for reconfiguring the logical control units
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