Hitachi XP P9500 User Manual page 562

host device name
A name assigned to a host device. A name of the logical device file for an HDLM device
is assigned to a host device name.
A host device name is assigned using the cUtXdY format.
The variables used in cUtXdY indicate the following:
U: Controller number reserved by HDLM
X: Target ID or World Wide Name of the sd or ssd device for the HDLM device
Y: LUN of the sd or ssd device for the HDLM device
(See also: host device)
host LU
An LU that a host recognizes.
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.
L
LDEV (Logical Device)
A combination of the storage system's product name, serial number, and an internal LU.
HDLM uses this value to identify a particular LU.
load balancing
A function for distributing the load across multiple paths that access an area within an
LU. To distribute the load, load balancing uses multiple paths to perform I/O operations.
The following six types of algorithms are available:
- The Round Robin algorithm
- The Extended Round Robin algorithm
- The Least I/Os algorithm
- The Extended Least I/Os algorithm
- The Least Blocks algorithm
- The Extended Least Blocks algorithm
local boot disk environment
An environment in which a boot disk is located on the host.
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Hitachi Dynamic Link Manager User Guide (for Solaris(R))
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