HP StorageWorks P9000 Performance Advisor Software v5.3 User and Troubleshooting Guide (T1789-96322, August 2011)

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
StorageWorks 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.
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 P9000 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 P9000 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 a P9000 disk array, the MPs do not reside on the CHAs and DKAs. Instead,
they form part of the MP blades.
Outband The outband mode uses the TCP/IP to directly connect to the XP or the P9000
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.
P9000
Performance
Advisor
The HP StorageWorks P9000 Performance Advisor is a software product from
HP for monitoring the XP and the P9000 storage subsystems.
Primary Volume
(PVOL)
The PVOL (also seen with a hyphen as P-VOL) is the first of a paired volume set
for any program product other than those used for the remote copy operations.
RAID Manager
Library (RML,
RMLIB)
The RAID Manager Library is an API library that enables third-party software
products to directly operate some of the functions on the P9000 and XP disk
arrays.
Read/Write (R/W) Read-write access.
RAID group A group of disks configured to provide enhanced redundancy, performance, or
both. Specifically, four or eight physical hard disk drives (HDDs) installed in a
disk array and assigned a common RAID level.
Remote Web
Console (RWC)
An HP StorageWorks product. A browser-based program installed on the SVP
that allows you to configure and manage the disk array.
SAN Storage area network. A network of storage devices available to one or more
servers.
S-VOL Secondary or remote volume. The copy volume that receives the data from the
primary volume.
Glossary468