HP StorageWorks 200 Storage Virtualization System site preparation guide (AE071-96003, October 2006)

FICON IBM mainframe Fiber Optic Connection.

GB Gigabytes.

GLM Gigabyte link modu le.

HA High availability.

HBA Host bus adapter. A built-in function or a ca rd installed in a PC or other host

computer to enable connection of the host to the SAN.

host mode Each port can be conﬁguredforaparticularhosttype. Thesemodesare

represented as two-digit hexadecimal numbers. For example, host mode 08

represents an HP-UX h ost.

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 R AID group is carved into pieces

according to the selecte d host emulation mode (that is, OPEN-3, O PEN-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 I D to a R AI D 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 interfaci ng disk drives and the host to cache mem ory.

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 p oised to cover for each other if necessary.

NAS Network attached storage.

node Logically speaking, an environment where instances can be executed. Physically,

a p rocessor, which is an elem ent of a cluster system.

NVS Nonvolatile storage.

HP StorageWorks 200 Storage Virtualization System site preparation guide