Compaq 4200 User Manual page 80

Glossary–4 Compaq StorageWorks Enclosure 4200 Family LVD Disk Enclosures User Guide
environmental
monitoring unit
ESD
fan
fault bus
FCC
form factor
FRU
GUI
high availability fault
bus
host
host adapter
host computer
See EMU.
Electrostatic discharge (ESD). The discharge of a potentially harmful
static electric voltage which is a result of improper grounding.
See blower.
The StorageWorks implementation of an additional high-availability
subsystem monitoring capability for storage devices. This bus enables
controllers to illuminate the device status LED when the controller
detects a problem. In some configurations, this bus notifies the controller
of the removal or replacement of a device.
Federal Communications Commission. The federal agency responsible
for establishing standards and approving electronic devices within the
United States.
An industry dimensional standard for 3.5-inch and 5.25-inch storage
devices. Device heights are specified as low-profile (1.0-inch),
half-height (1.6-in), and full-height (__-in)
Field Replaceable Unit. A hardware element that can be replaced in the
field. This type replacement can require special training, tools, or
techniques. Therefore, these procedures are usually performed only by
customer service engineers.
Graphical User Interface. A system that displays the status of a and
enables the user to control the StorageWorks subsystem. For example, the
StorageWorks Command Console (SWCC).
See fault bus.
The primary or controlling computer. bus extender, bus expander, adapter,
or controller to which storage is attached.
A device that connects the host system I/O bus (for example, a PCI bus)
to the storage SCSI bus. A host adapter performs the lower layers of the
SCSI protocol and normally operates in the initiator role.
See host.