HP XP20000/XP24000 HP StorageWorks XP24000/XP20000 Disk Array Site Preparation - Page 71

Logical Unit Size Expansion. The LUSE feature is available when the HP, Mission Critical Services.

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failover FAN FC FC-AL FCP fence level FICON GLM HA HBA HDD host mode hot standby LD, LDEV local disk LUN LUSE MCU MCS MIX Disconnecting a failed unit or path and replacing it with an alternative unit or path in order to continue functioning. Factory Authorization. Fibre Channel. A network technology primarily used for storage networks. Fibre Channel arbitrated loop. Fibre Channel Protocol. A method of setting rejection of P9000 or XP Continuous Access write I/O requests from the host according to the condition of mirroring consistency. Fibre connectivity. Hardware that connects the mainframe to the control unit. Gigabit link module. A 1 Gb/s fiber optic transceiver. High availability. Host bus adapter. A built-in function or a card installed in a PC or other host computer to enable connection of the host to the SAN. Hard disk drive. Each port can be configured for a particular host type. These modes are represented as two-digit hexadecimal numbers. For example, host mode 08 represents an HP-UX host. The act of using one or more servers (or disks) as a standby in case of a primary server (disk) failure. 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. A disk in the host. 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. 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. Main control unit. Mission Critical Services. 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. XP24000/XP20000 Disk Array Site Preparation Guide 71

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failover
Disconnecting a failed unit or path and replacing it with an alternative unit or
path in order to continue functioning.
FAN
Factory Authorization.
FC
Fibre Channel. A network technology primarily used for storage networks.
FC-AL
Fibre Channel arbitrated loop.
FCP
Fibre Channel Protocol.
fence level
A method of setting rejection of P9000 or XP Continuous Access write I/O
requests from the host according to the condition of mirroring consistency.
FICON
Fibre connectivity. Hardware that connects the mainframe to the control unit.
GLM
Gigabit link module. A 1 Gb/s fiber optic transceiver.
HA
High availability.
HBA
Host bus adapter. A built-in function or a card installed in a PC or other host
computer to enable connection of the host to the SAN.
HDD
Hard disk drive.
host mode
Each port can be configured for a particular host type. These modes are
represented as two-digit hexadecimal numbers. For example, host mode 08
represents an HP-UX host.
hot standby
The act of using one or more servers (or disks) as a standby in case of a primary
server (disk) failure.
LD, 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
.
local disk
A disk in the host.
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.
MCU
Main control unit.
MCS
Mission Critical Services.
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.
XP24000/XP20000 Disk Array Site Preparation Guide
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