HP XP Performance Advisor Software User Manual
Page 408
F
FC
Fibre Channel. A network technology primarily used for storage networks.
G
Globally unique
identifier (GUID)
It is a special type of identifier used in the software applications to provide a unique reference
number. The value is represented as a 32 hexadecimal character string, such as the
{21EC2020-3AEA-1069-A2DD-08002B30309D} and usually stored as a 128 bit integer.
H
HDD
Hard Disk Drive
Hewlett-Packard
Authorization
Center (HPAC)
The Hewlett-Packard Authorization Center license key website
),
where you generate a license for a specified internal raw disk capacity of your XP disk array or
the usable capacity of your P9500 disk array.
Host Group
A group of hosts that belong to a particular WWN group.
I
IP version 6 (IPv6)
The IPv6 is a new version of the Internet Protocol, which is a successor to the IP version 4 (IPv4).
L
LDEV
Logical device. An LDEV is created when a RAID group is carved into pieces according to the
selected host emulation mode (that is, OPEN?3, OPEN?8, OPEN?9). The number of resulting
LDEVs depends on the selected emulation mode. The term LDEV is also known as term volume.
LUN
Logical unit number. A LUN results from mapping a SCSI logical unit number, port ID, and LDEV
ID to a RAID group. The size of the LUN is determined by the emulation mode of the LDEV and
the number of LDEVs associated with the LUN. For example, a LUN associated with two OPEN-3
LDEVs has a size of 4,693 MB.
LUSE
Logical Unit Size Expansion. The LUSE feature is available when the HP XP7 LUN Manager
product is installed, and allows a LUN, normally associated with only a single LDEV, to be
associated with 1 to 36 LDEVs. Essentially, LUSE makes it possible for applications to access a
single large pool of storage.
M
MIX
A circuit board in the disk control unit that includes disk adapters and channel adapters for
interfacing disk drives and the host to cache memory.
MP blades
The MP blades are the microprocessor blades in the P9500/XP7 disk arrays. Each MP blade
has four MPs residing on it.
The MPs/DKPs that reside on the CHAs and the DKAs in the XP disk arrays form part of the MP
blades in the P9500/XP7 disk arrays.
Multiprocessor
(MP)
In an XP disk array, the MPs are installed on the CHAs and the DKAs. The MPs on a CHA are
addressed as CHPs and the MPs on a DKA are addressed as DKPs.
In an P9500/XP7 disk array, the MPs do not reside on the CHAs and DKAs. Instead, they form
part of the MP blades.
O
Outband
The
outband mode uses the TCP/IP to directly connect to the XP/XP7 disk array and collect
the
configuration data through the array SVP. Using the outband mode ensures that the
performance
of the SAN is not affected because of the data collection.
408 Glossary