HP Hitachi Dynamic Link Manager Software User Manual
Page 643
C. Glossary
621
• The Extended Least Blocks algorithm
local boot disk environment
An environment in which a boot disk is located on the host.
logical device file
Device files under
/dev/dsk
and
/dev/rdsk
.
Note that the term logical device used here is not an LDEV.
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
node
A server in a cluster.
non-owner controller
A controller other than an owner controller.
Non-owner controllers exist only in the Thunder 9500V series, or 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 Thunder 9500V series, or 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 Thunder 9500V Series, or Hitachi AMS/WMS series is in use. A controller
other than an owner controller is called a non-owner controller.
When the Lightning 9900 Series, Lightning 9900V Series, Hitachi USP, Universal
Storage Platform V/VM, Virtual Storage Platform, Hitachi AMS2000 Series or
Hitachi SMS is in use, all controllers are owner controllers.