HP XP7 PA Software Installation Guide
D
DASD Fast Write
(DFW)
The DFW is the function of a storage controller that allows caching of active write data without
exposure of data loss. This is achieved by journaling of the active write data in the NVS.
Device Special File
(DSF)
In the non windows systems, the DSF is an interface for a device driver that appears in a file
system as if it were an ordinary file. In the Windows systems, the DSF allows the software to
interact with a device driver using the standard input or the output system calls.
Disk Adapter
(DKA)
The DKA is a PCB in the XP, P9000 and the XP7 disk arrays. It manages the data transfer between
the cache and the physical drives in the backend.
In an XP disk array, the DKA is one of the two PCB types that contains the MPs.
Disk Controller
(DKC)
The array enclosure that contains the channel adapters and service processor (SVP).
Disk Processor
(DKP)
In the XP disk arrays, the MP that resides on a DKA is addressed as the DKP.
DKPs does not exist in the XP7 disk arrays. All the MPs/DKPs form part of the MP blades in the
XP7 disk arrays.
DKU Disk cabinet unit. The array cabinet that houses the physical disks.
Domain Name
System (DNS)
The DNS corresponds to the [servername].[domain name] of your system.
E
emulation mode The LDEVs associated with each RAID group are assigned an emulation mode that makes them
operate like OPEN system disk drives. The emulation mode determines the size of an LDEV.
OPEN-3: 2.46 GB
OPEN-8: 7.38 GB
OPEN-9: 7.42 GB
OPEN-E: 13.56 GB
OPEN-K: Not available
OPEN-L: 36 GB
OPEN-M Not available
OPEN-V: User-defined custom size
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
Hewlett-Packard
Authorization
Center (HPAC)
The Hewlett-Packard Authorization Center license key website (http://webkey.external.hp.com/),
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.
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).
J
JRE Java Run time.
L
LDAP Lightweight Directory Access Protocol.
124 Glossary