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138 DS8000 Series: Concepts and Architecture
7.3.3 DS Command-Line Interface (DS CLI)
The IBM TotalStorage DS Command-Line Interface (CLI) helps enable open systems hosts to
invoke and manage the Point-in-Time Copy and Remote Mirror and Copy functions through
batch processes and scripts. The CLI provides a full-function command set that allows you to
check your storage unit configuration and perform specific application functions when
necessary. The following list highlights a few of the specific types of functions that you can
perform with the DS CLI:
Check and verify your storage unit configuration.
Check the current Copy Services configuration that is used by the storage unit.
Create new logical storage and Copy Services configuration settings.
Modify or delete logical storage and Copy Services configuration settings.
7.3.4 DS Open application programming Interface (API)
The DS Open application programming interface (API) is a non-proprietary storage
management client application that supports routine LUN management activities, such as
LUN creation, mapping and masking, and the creation or deletion of RAID-5 and RAID-10
volume spaces. The DS Open API also enables Copy Services functions such as FlashCopy
and Remote Mirror and Copy. It supports these activities through the use of the Storage
Management Initiative Specification (SMIS), as defined by the Storage Networking Industry
Association (SNIA)
The DS Open API helps integrate DS configuration management support into storage
resource management (SRM) applications, which allow customers to benefit from existing
SRM applications and infrastructures. The DS Open API also enables the automation of
configuration management through customer-written applications. Either way, the DS Open
API presents another option for managing storage units by complementing the use of the IBM
TotalStorage DS Storage Manager web-based interface and the DS Command-Line
Interface.
You must implement the DS Open API through the IBM TotalStorage Common Information
Model (CIM) agent, a middleware application that provides a CIM-compliant interface. The
DS Open API uses the CIM technology to manage proprietary devices such as open system
devices through storage management applications. The DS Open API allows these storage
management applications to communicate with a storage unit.
Tip: What is changed from the ESS CLI?
ESS CLI is a prior version of the command-line interface. It is used for managing the ESS.
There are differences between the ESS CLI and DS CLI.
The ESS CLI needs two steps to issue Copy Service functions:
1. Register a Copy Services task from the Web user interface.
2. Issue the registered task from CLI.
The DS CLI has no need to register a Copy Services task before you issue the CLI. You
can easily implement and dynamically change your Copy Services operation without the
GUI.
For further information about the DS CLI, see Chapter 11, “DS CLI” on page 231.