HP 3PAR System Reporter Software Licenses - Manual (Page 18)

Glossary
A
ATS Atomic, Test, and Set. This command allows the hypervisor to lock only the required blocks rather
than the entire LUN. Without VAAI, the entire LUN temporarily could be locked by the numerous
VMFS operations of one single hypervisor and this prevents other hypervisors from accessing the
shared LUNs. The ATS API off-loads lock management from the host to the storage array and
keeps the LUN available by locking only required blocks, not the entire VMFS file system.
C
Command Line
User Interface
(CLUI) A CLUI is a means of interaction with a computer program where the user (or client) passes
commands in the form of a line of text (a command line).
CPG Common Provisioning Group. CPG is a set of logical disks from which you can create virtual
volumes and virtual copies that are capable of allocating storage on demand.
L
LUN Logical Unit Number.
S
SAN Storage area network. A network of storage devices available to one or more servers.
T
TPVV Thinly-Provisioned Virtual Volume.
V
VAAI vStorage API for Array Integration. The VAAI can off-load specific storage operations to compliant
storage hardware, which results in less CPU, memory, and storage fabric bandwidth consumption.
VV Virtual Volume.
W
WWN World Wide Name. A unique identifier assigned to a Fibre Channel device.
X
XCOPY Extended Copy. This is a more functional file copying utility than the copy command. For example,
XCOPY can be used for copying multiple files or entire directory trees from one directory to
another and for copying files across a network.
18 Glossary