HP Surestore Disk Array 12h - And FC60 Service Manual page 402

SCSI
An acronym for "Small Computer System Interface", SCSI is an industry-standard
protocol for connecting peripherals and hosts over a bus topology.
SCSI-2 bus
A bus that complies with the SCSI standard. The six channel that connect the disk array
controller system to the disk systems are SCSI 2 busses. Each disk system has two
internal SCSI-2 busses that can be configured as independent busses that connect five
disk slots to each BCC controller. or as a single internal bus.
SCSI ID
A unique number assigned to each device connected to a SCSI bus. This number is used
by the HBA to address each device on the bus. Each disk in a disk system is assigned a
SCSI ID of 0 - 9.
secondary disk array path or secondary path
See primary disk array path or primary path.
SIMM (Single In-line Memory Module)
A memory module that provides the local storage (cache) for an SP. An SP must have at
least two 4-MB memory modules to support the storage system cache.
Start Of Day (SOD)
The initialization process used by the disk array controllers to configure itself and
establish various operating parameters. Each controller runs its own SOD process. The
SOD process occurs following a power on reset, or following the insertion of a
controller.
status light
Lights on the front panel of each disk module, power module, and fan used to indicate
the operating status of the hardware.
STM (Support Tools Manager)
A host-based tool used for disk array configuration, management, and diagnostics.
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