HP 200 HP StorageWorks 200 Storage Virtualization System site preparation guid - Page 51

IBM mainframe Fiber Optic Connection., Hewlett-Packard Development Company.

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FICON GB GLM HA HBA host mode hot standby HP I/O LAN LD, LDEV LED local disk LU LUN LUSE m MB MCU MIX mirroring consistency mm MR ms, msec mutual hot standby system NAS node NVS IBM mainframe Fiber Optic Connection. Gigabytes. Gigabyte link module. 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. 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. Using two or more servers as a standby in case of a primary server failure. Hewlett-Packard Development Company. Input/output (applies to an operation or device). Local area network. 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 often used synonymously with the term volume. Light emitting diode. A disk in the host. Logical unit. 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. See also Expanded LUN. Meters. Megabytes. Main control unit. 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. The consistency (usability) of data in a volume (for example, S-VOL). Millimeters. Magnetoresistive. Milliseconds. Two servers that are poised to cover for each other if necessary. Network attached storage. Logically speaking, an environment where instances can be executed. Physically, a processor, which is an element of a cluster system. Nonvolatile storage. HP StorageWorks 200 Storage Virtualization System site preparation guide 51

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FICON
IBM mainframe Fiber Optic Connection.
GB
Gigabytes.
GLM
Gigabyte link module.
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.
host mode
Each port can be con
fi
gured 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
Using two or more servers as a standby in case of a primary server failure.
HP
Hewlett-Packard Development Company.
I/O
Input/output (applies to an operation or device).
LAN
Local area network.
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 often used synonymously with the term volume.
LED
Light emitting diode.
local disk
A disk in the host.
LU
Logical unit.
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. See also
Expanded LUN
.
m
Meters.
MB
Megabytes.
MCU
Main control unit.
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.
mirroring consis-
tency
The consistency (usability) of data in a volume (for example, S-VOL).
mm
Millimeters.
MR
Magnetoresistive.
ms, msec
Milliseconds.
mutual hot
standby system
Two servers that are poised to cover for each other if necessary.
NAS
Network attached storage.
node
Logically speaking, an environment where instances can be executed. Physically,
a processor, which is an element of a cluster system.
NVS
Nonvolatile storage.
HP StorageWorks 200 Storage Virtualization System site preparation guide
51