HP XP7 Storage - Manual (Page 240)

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
Functionality for distributing the load across the paths that access each area within an
LU. To distribute loads, load balancing uses multiple paths to perform I/O operations.
Load balancing uses VMware vSphere PSPs. HDLM can use the following load balancing
algorithms:
- The Extended Round Robin algorithm
- The Extended Least I/Os algorithm
- The Extended Least Blocks algorithm
- The Most Recently Used algorithm (VMware)
- The Round Robin algorithm (VMware)
LU (Logical Unit)
A logical unit that is a logical volume defined in the storage system, and with which the
host can perform input or output operations.
(See also: host LU)
N
non-owner controller
A controller other than an owner controller.
Non-owner controllers exist only in the Hitachi AMS/WMS series.
(See also: owner controller, non-owner path)
non-owner path
A path that passes through a non-owner controller.
Non-owner paths exist only in the Hitachi AMS/WMS series.
(See also: owner path, non-owner controller)
O
owner controller
A controller that has been set as an owner controller for an LU. Owner controllers are
only in the Hitachi AMS/WMS series. A controller other than an owner controller is called
a non-owner controller.
When using the Universal Storage Platform V/VM series, Virtual Storage Platform series,
VSP G1000 series, Hitachi AMS2000 series, Hitachi SMS series, HUS100 series, or HUS
VM, all controllers are owner controllers.
(See also: owner path, non-owner controller)
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Glossary-4
Hitachi Dynamic Link Manager (for VMware®) User Guide