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

the DSF allows the software to interact with a device driver using the standard
input or the output system calls.
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
External Storage An external storage that is connected to an XP or a P9000 disk array.
FC Fibre Channel. A network technology primarily used for storage networks.
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.
HDD Hard Disk Drive
Host Group A group of hosts that belong to a particular WWN group.
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 P9000
disk array.
IP version 6 (IPv6) The IPv6 is a new version of the Internet Protocol, which is a successor to the IP
version 4 (IPv4).
LDEV Logical device. An LDEV is created when a RAID group is carved into pieces
according to the selected host emulation mode (that is, OPEN-3, OPEN-8,
OPEN-9). The number of resulting LDEVs depends on the selected emulation
mode. The term LDEV is also known as term volume.
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.
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