Compaq 4200 User Manual page 82

Glossary–6 Compaq StorageWorks Enclosure 4200 Family LVD Disk Enclosures User Guide
mean time between
failures
modular carrier
mounting brackets
mounting rail
MTBF
nonvolatile
NV
NVRAM
pedestal
pluggable
port
power supply
qualified device
rack
radio frequency
interference
See MTBF.
See carrier.
The brackets used for mounting StorageWorks enclosures in a cabinet.
The surface of a rack on which panels mount. (Per EIA Standard
RS-310-C.)
Mean time between failures. The time interval (hours) which may be
expected between failures of operating equipment.
See NV.
Nonvolatile. A term used to describe memory, the contents of which
survive loss of power.
Nonvolatile Random Access Memory
See tower.
A method of element replacement whereby the complete system remains
on-line during element removal or insertion. There is no data transfers
over the enclosure buses during removal or insertion of an element. No
booting or loading of code is permitted except on the element being
inserted. User applications that are not dependent upon the elements on
the affected SCSI bus are not noticeably impacted.
See also hot-pluggable.
(1) A logical route for data in and out of a controller. A port can contain
one or more channels, all of which contain the same type data. (2) The
hardware and software that connects a host controller to a CI, SCSI, or
SDI bus.
The enclosure element that develops that DC voltages for operating the
enclosure elements from either an AC or DC source.
See supported device.
A floor-standing structure primarily designed for, and capable of,
supporting equipment. All racks provide for the mounting of panels. (per
EIA Standard RS-310-C).
See RFI.