Quantum TC2201 User Manual
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Glossary
Quantum TC2201 User’s Guide
142
For a iSCSI adapter, online indicates the iSCSI adapter is active and
available for access and input/output processing.
P
Point-to-Point
One of three existing topologies, in which two ports are
directly connected by a link with no fabric, loop, or switching elements
present.
Post
See Power On Self Test.
Power on Self Test (POST)
A group of tests run when the TC2201 is
powered on.
Processor
Contains the arithmetic and logic, control, and internal
memory units that control the TC2201.
R
Reset SCSI
For a specific SCSI bus, the host clears all inputs and outputs
and then resets the bus and all the devices connected to it.
Router
An intelligent device within the SAN (storage area network)
infrastructure that can handle multiple protocols, such as Fibre Channel
and SCSI. The routing decision is based on paths between address
mappings among dispersed initiators and targets.
Router-to-Router
Configuration involving at least two routers where one
router is in Initiator Mode and another in Target Mode.
S
SAN
Storage Area Network
SCSI
Small Computer System Interface. An industry standard for
connecting peripheral devices and their controllers to an initiator.
SCSI adapter
A 16-bit fast/wide SE or Differential or LVD or 8-bit
narrow single-ended physical connection between the TC2201 and the
SCSI devices. Each SCSI adapter supports up to sixteen (for fast/wide) or
eight (for narrow) SCSI devices, including itself.
SCSI addressing
A SCSI adapter supports up to 16 devices, including
itself. Each device has its own unique SCSI address. The SCSI address of a
device dictates the device’s priority when arbitrating for the SCSI bus.
SCSI address “7” has the highest priority. The next highest priority
address is “6” followed by 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8, with “8”
being the lowest priority address.
The narrow SCSI adapter is factory set to address 7. A narrow SCSI
adapter supports up to eight devices, including itself. SCSI address “7”
has the highest priority followed by 6, 5, 4, 3, 2, 1, and 0.