Copy Services - IBM TotalStorage DS8000 User Manual

v Up to 16 host adapters
v Up to 320 disk drives (up to 96 TB of capacity)
With these separate resources, each Storage System LPAR can run the same or
different versions of microcode, and can be used for completely separate
production, test, or other unique storage environments within this single physical
system. This may enable storage consolidations where separate storage
subsystems were previously required, helping to increase management efficiency
and cost effectiveness.

Copy Services

Copy Services is a collection of functions that provides disaster recovery, data
migration, and data duplication functions. Copy Services runs on the IBM
TotalStorage DS8000 storage unit and supports open systems and zSeries
environments.
Many design characteristics and advanced functions of the DS8000 contribute to
protection of your data. DS8000 has a number of advanced Copy Services
functions that are part of the IBM TotalStorage Resiliency family. These functions
are supported also on the previous generation of storage systems called the IBM
TotalStorage Enterprise Storage Server (ESS).
Copy Services include the following types of functions:
v FlashCopy, which is a point-in-time copy function
v Remote mirror and copy functions (previously known as Peer-to-Peer Remote
v z/OS Global Mirror (previously known as Extended Remote Copy [XRC])
You can manage Copy Services functions through a command-line interface called
the IBM TotalStorage DS CLI and a new Web-based interface called the IBM
TotalStorage DS Storage Manager. The DS Storage Manager allows you to set up
and manage the following types of data-copy functions from any point from which
network access is available:
FlashCopy
Remote Mirror and Copy
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DS8000 User's Guide
Copy or PPRC), which includes:
– IBM TotalStorage Metro Mirror (previously known as Synchronous PPRC)
– IBM TotalStorage Global Copy (previously known as PPRC Extended
Distance)
– IBM TotalStorage Global Mirror (previously known as Asynchronous PPRC)
The FlashCopy feature enables you to create full volume copies of data.
When you set up a FlashCopy operation, a relationship is established
between source and target volumes, and a bitmap of the source volume is
created. Once this relationship and a bitmap are created, the target volume
can be accessed as though all the data had been physically copied. While
a relationship between the source and target volume exists, a background
process copies the tracks from the source to the target volume.
FlashCopy is an optional function. To use it, you must purchase the
point-in-time 2244 function authorization model, which is 2244 Model PTC.
The remote mirror and copy feature is a flexible data mirroring technology
that allows replication between volumes on two or more disk storage
systems. You can also use this feature for data backup and disaster
recovery.