HP XP P9000 Performance Advisor Software - Manual (Page 414)

P
HP XP P9000
Performance
Advisor The HP XP 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.
R
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.
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.
Remote Web
Console (RWC) An HP product. A browser-based program installed on the SVP that allows you to configure and
manage the disk array.
S
S-VOL Secondary or remote volume. The copy volume that receives the data from the primary volume.
SAN Storage area network. A network of storage devices available to one or more servers.
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).
sidefile An area of cache used to store the data sequence number, record location, record length, and
queued control information.
Smart Tiers The Smart Tiers are applicable only for the P9000 disk arrays and configured using the ThP
V-Vols. They ensure that the highly utilized ThP pages are relocated to the fastest drive in the ThP
pool. A maximum of three tiers can be configured.
Snapshot The snapshot is a business copy volume type that depicts a point-in-time copy of the original
primary volume.
Storage Logical
Partition (SLPR)
NOTE: The SLPR component is applicable only for the XP disk arrays. It does not exist in the
P9000 disk arrays. As a result, the SLPR-related data is not displayed in HP XP P9000 Performance
Advisor for the P9000 disk arrays.
The SLPR is a partition of the RAID500 to which the host ports (1 or more) and the CLPRs (1 or
more) are assigned. The SLPR0 will always exist (cannot be deleted). Sometimes, the SLPR acronym
includes an additional word. For example, Storage administrator Logical Partition or Storage
management Logical Partition, both mean the same. The purpose of the SLPR is to allow multiple
administrators to manage a subsystem without the risk of causing mistakes that can destroy another
user's volumes, or reduce other user's expected performance by using more components (e.g.
cache) than required.
Storage Subsystem
Identification (SSID) The SSID (also called Subsystem Identifier) is a user assigned number that identifies a DASD
subsystem. This number is set by the service representative at the time of the installation and it is
included in the product data. The Valid SSID values are 0004-FFFC.
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.
414 Glossary