HP XP7 Storage - Manual (Page 239)

H
HAM environment
An environment in which volume pairs that are synchronized between two storage
systems are created by HAM (High Availability Manager), and hosts are configured to
recognize these volumes as one volume. An HAM environment consists of the primary
volume (P-VOL) in the primary site and the secondary volume (S-VOL) in the secondary
site. When an error occurs on one of the volumes, the path can be switched to the other
volume by using HDLM.
HBA (Host Bus Adapter)
Device that functions as an interface connecting a host with external devices.
In this manual, the term HBA refers to an interface card installed in a host, in
configurations where the host and storage units are connected via a FC connection.
HDLM driver
A program that controls all the HDLM functions, manages paths, and detects errors.
HDLM manager
A program that monitors the operational status of hosts by linking with Global Link
Manager, when Global Link Manager is used to manage HDLM.
host
An ESXi server that connects to storage subsystems via a SAN.
host device
A logical area in a host LU.
(See also: host LU, host device name)
host device name
A name assigned to a host device.
host LU
An LU that a host recognizes. The actual HDev entity is a Dev in the storage system.
Each host LU has a host LU number.
(See also: LU, host LU number, host device)
host LU number
A number assigned to a host LU. The host LU number is part of a path name.
(See also: host LU, path name)
I
intermittent error
An error that occurs irregularly due to, for example, a loose cable connection.
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Glossary-3
Hitachi Dynamic Link Manager (for VMware®) User Guide