P9000Watch and P9000Sketch Reference guide for HP StorageWorks P9000 Performance Advisor v5.3 (T1789-96325, August 2011)

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 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.
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.
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.
SVP Service processor. A notebook computer built into the disk array. The SVP
provides a direct interface to the disk array and used only by the HP service
representative.
Shared Memory
(SM)
The shared memory in an XP disk array stores shared information about the XP
subsystem and the cache control information.
The shared memory in a P9000 disk array stores shared information about the
P9000 subsystem and the cache control information.
This type of information is used for the exclusive control of the subsystem. Similar
to the cache, the shared memory is controlled as two areas of memory and is
fully non-volatile (sustained for approximately seven days).
Snapshot The snapshot is a business copy volume type that depicts a point-in-time copy of
the original primary volume.
Glossary86