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HP Hitachi Dynamic Link Manager Software User Manual

Page 699

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- 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

logical device file

A device file in the /dev directory.

Note that the term logical device here is different from 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. A controller other than

an owner controller is called a non-owner controller.

When using Lightning 9900 series, Lightning 9900V series, Hitachi USP series, Universal

Storage Platform V/VM series, Virtual Storage Platform 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-5

Hitachi Dynamic Link Manager User Guide for Linux

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