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ESS Copy Services
ESS Copy Services collects information from your IBM storage servers onto a
single Copy Services server. The ESS supports Copy Services through both a
Web-based interface and a command-line interface.
This section describes the two interfaces for ESS Copy Services, shows an
example of the connections between two Copy Services server groups, and gives
you an overview of the functions you can perform using the ESS Web Copy
Services panels.
Web-based interface: The ESS Web Copy Services interface initiates and
manages Peer-to-Peer Remote Copy (PPRC) and FlashCopy functions for open
systems and IBM System/390 hosts.
You access ESS Web Copy Services from the ESS Specialist Navigation frame.
Command-line interface: If you choose to install the command-line interface
(CLI) application on your host system, you can write customized scripts using CLI
commands. You can execute the CLI commands from a host system. You can use
the CLI commands to invoke Copy Services tasks in an ESS Web Copy Services
server.
The command-line functions (TSO or API) on IBM System/390 hosts initiate and
manage Extended Remote Copy (XRC), Concurrent Copy, FlashCopy and PPRC.
An API has been developed which uses the TSO command line function. For more
information, see OS/390 DFSMSdfp Advanced Services .
The CLI on the open-systems hosts initiates and manages PPRC and FlashCopy
on ESS.
See IBM Enterprise Storage Server Host Systems Attachment Guide for information
about using the Copy Services command-line interface from your open systems
hosts to invoke Copy Services functions. See the web site at
http://www.ibm.com/storage/hardsoft/products/ess/refinfo.htm
for information on which open systems host platforms are supported for CLI. The
command-line interface (CLI) is updated when a new LIC is provided.
Copy Services server groups: Figure 3 on page 8 shows the connections
between two ESS Web Copy Services server groups. A Copy Services server group
is a collection of ESS clusters that participate in Copy Services functions that
include the volumes within the clusters.
7
Chapter 1. Introduction
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