User guide

CIM/WBEM Features of Device Manager
CIM/WBEM of Device Manager provides the four features specified in SMI-S:
• Objection operation feature
• Indication feature
• Service discovery feature
• Performance information acquisition feature
These features are described below:
• Object operation feature
The SMI-S specifications, to which Device Manager conforms, define the
interfaces for devices that make up a storage network, such as storage
subsystems, virtual storage systems, switches, and hosts. The features
that need to be provided by the management service to manage the
devices are grouped in a profile for each device. The profiles used by the
CIM/WBEM features of Device Manager are the Array profile and its
subprofiles. The Array profile defines the interfaces for storage subsystems.
• Indication feature
The indication feature is the event notification feature defined by CIM.
When an event occurs in a CIM server, the CIM server reports the
indication instance, which shows the information about the event (such as
generation or deletion of a CIM instance), to CIM clients. For a CIM client to
receive indications, its location and transmission conditions for indications
must be registered in the CIM server beforehand. For details on how to
register, see the SNIA Website. Device Manager reports the occurrence of
the following events:
– Generation of a volume
– Deletion of a volume
– Allocation of a path
– Cancellation of a path
• Service discovery feature
Device Manager provides the service discovery feature based on the
Service Location Protocol (SLP). The SLP is undergoing standardization by
IETF and provides a way to discover desired services available in a
network. For details on the SLP, see RFC2608. Just by specifying the type
of service, SLP clients can obtain information (such as URLs) about how to
access the available services, and information about service attributes. In
Device Manager, the Device Manager server uses the SLP to report
information about the WBEM Service.
• Performance information acquisition feature
Using the CIM interface, Device Manager acquires information about I/Os
to ports and LDEVs as performance information of the storage subsystem.
1-4 Overview and Setup of CIM/WBEM
Hitachi Device Manager SMI-S Provider Installation and User Guide