HP XP P9500 Storage - Manual (Page 226)

custom volume
(CV) A custom-size volume whose size is defined by the user using Virtual LVI/Virtual LUN.
CV See custom volume (CV) .
CVS custom volume size
CXFS clustered version of XFS file system
data drive A physical data storage device that can be either a hard disk drive (HDD) or a flash drive (also
called a solid-state device).
DC data center
DCR Dynamic Cache Residency
delta resync A disaster recovery solution in which Continuous Access Synchronous and Continuous Access
Journal systems are configured to provide a quick recovery using only differential data stored at
an intermediate site.
device A physical or logical unit with a specific function.
device emulation Indicates the type of logical volume. Mainframe device emulation types provide logical volumes
consisting of a fixed size, called logical volume images (LVIs). LVIs contain EBCDIC data in CKD
format. Typical mainframe device emulation types include 3390-9 and 3390-M. Open-systems
device emulation types provide logical volumes of variable sizes, called logical units (LUs). LUs
contain ASCII data in FBA format. The typical open-systems device emulation type is OPEN-V.
disaster recovery A set of procedures to recover critical application data and processing after a disaster or other
failure.
disk adapter (DKA) The hardware component that controls the transfer of data between the drives and cache. A DKA
feature consists of a pair of boards.
disk array Disk array, or just an array, is a complete storage system, including the control and logic devices,
storage devices (HDD, SSD), connecting cables, and racks.
disk controller
(DKC) The hardware component that manages front-end and back-end storage operations. The term
DKC is sometimes used to refer to the entire RAID storage system.
DKA See disk adapter (DKA) .
DKC disk controller. Can refer to the RAID storage system or the controller components.
DKCMAIN disk controller main. Refers to the microcode for the XP P9500 storage system.
DKU disk unit. Refers to the cabinet (floor model) or rack-mounted hardware component that contains
data drives and no controller components.
dump A collection of data that is saved to a file when an error or crash occurs. The data is used by
support personnel to determine the cause of the error or crash.
emulation The operation of the HP RAID storage system to emulate the characteristics of a different storage
system. For device emulation the mainframe host “sees” the logical devices on the RAID storage
system as 3390-x devices. For controller emulation the mainframe host “sees” the control units
(CUs) on the RAID storage system as 2105 or 2107 controllers.
The RAID storage system operates the same as the storage system being emulated.
emulation group A set of device emulation types that can be intermixed within a RAID group and treated as a
group.
external
application A software module that is used by a storage system but runs on a separate platform.
external volume A logical volume whose data resides on drives that are physically located outside the HP storage
system.
FC fibre channel; FlashCopy
FC-AL fibre-channel arbitrated loop
FCP fibre-channel protocol
FCSP fibre-channel security protocol
FD Dump Tool Downloads Remote Web Console configuration information onto disk for backup and
troubleshooting purposes.
226 Glossary