Chapter 5 Normal Operation
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The Volume List command can be executed independently on the server machines where iSM is not installed and
reports disk array names and logical disk names of subsystem connected via the fibre channel (FC). This command can
be used to obtain the relationship (hereafter referred to as the volume information) between Windows system
information such as drive letters, HBT (host adapter number/bus number/target ID), LUNs, and physical disk numbers
and disk array information such as logical disk name and disk array name. This command can also be used to create or
update the volume information.
HBT is described below.
<Host Adapter Number: HBA>
This is the number of an interface card to connect the SCSI bus and the host. There are two or more buses in the
host adapter.
<Bus Number: Bus>
This is the number of a path (bus) from the host adapter to a target (SCSI device). One path can handle two or more
targets.
<Target ID>
This is an ID to identify a device connected to the SCSI bus. One ID is assigned to one disk array.
Disk array
(switch)
HBA
Bus
Bus
Target ID
HBA
Figure 5-7 Relationship Between System Configuration and HBT