HP StorageWorks P9000 Command View Advanced Edition Suite Software 7.1.1 Installation and Configuration Guide (TB581-96063, September 2011)

Glossary
This glossary defines the special terms used in this document. Click the desired letter at the bottom of
each page to display the glossary entries that start with that letter.
allocated volume A volume for which one or more host paths are defined.
cache A set of RAM (Random Access Memory) modules used to store data temporarily.
capacity The amount of data storage space available on a drive or storage system.
Capacity is generally measured in MB, but it can also be measured in other units
such as TB and PB, depending on the total storage space.
CLPR Cache Logical Partition
copy pair A primary and secondary volume pair linked by the volume replication
functionality of a storage system.
CSV Comma separated value
CU (control unit) A virtual control unit created in an storage system. Also called a CU image. Each
volume created in a storage system is connected to a single CU, and a number
is assigned to each CU for identifying its volumes. Therefore, volumes (LDEVs)
in a storage system are specified by the CU number (CU#) and LDEV number.
data drive A physical data storage device that can be either a hard disk drive (HDD) or a
flash (solid-state) drive.
data pool One or more logical volumes designated to temporarily store original data.
When a snapshot is taken of a primary volume, the data pool is used if a data
block in the primary volume is to be updated. The original snapshot of the volume
is maintained by storing the changeable data blocks in the data pool.
DB Database
device A physical or logical unit with a specific function.
DHCP Dynamic Host Configuration Protocol
DKCMAIN Disk controller main
DKP Disk processor
DKU Disk unit
external volume A logical volume whose data resides on drives that are physically located in an
externally connected storage system.
FC Fibre Channel
GUI Graphical user interface
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