Grass Valley PFR 500/E Dec 10 2001 - Manual (Page 76)

Glossary
76 PFC500/E Instruction Manual November 17, 2000
FC-AL address ID — A number that identifies a device as a node on a fibre channel
loop. You select the FC-AL address ID for an SP using switches on the RC. The
default FC-AL address ID for RC A is 0; the default FC-AL address ID for RC B
is 1.
Fibre Channel Disk board — The name for the printed-circuit board within the
Profile XP Media Platform that allows the server to access the Fibre Channel loop
and thence the disk drives within a PFC 500/E.
field-replaceable unit — See FRU (field-replaceable unit).
FRU (field-replaceable unit) — A hardware assembly that can be replaced on site,
instead of at the point of manufacture.
hot repair — See replace under power.
hub — An FC_AL switching device that allows multiple servers and targets such as
storage systems to connect at a central point. A single hub configuration appears as a
single loop.
LCC (link control card) — A CRU in an enclosure that connects Fibre Channel
signalling to the disk modules. The LCC receives and electrically terminates the
incoming FC-AL signal. Then it passes the input signal to the disk drives in the
PFC500E, and drives the output signal via cables to the next device (if any) in the
loop.
LUN (logical unit) — One or more disk modules (each having a head assembly and
spindle) bound into a group - usually a RAID group. The operating system sees the
LUN, which includes one or more disk modules, as one contiguous span of disk
space.
media interface adapter — See MIA (media interface adapter).
memory module — See RC memory module.
MIA (media interface adapter) — A device for connecting an optical cable to a
DB9 copper connector.
node — Any device with a Fibre Channel interface that connects to a Fibre Channel
loop.
power supply — An essential element of the storage-system power supply. A
storage system can have two power supplies, PS A and PS B. With two, it can
survive failure of one supply. You can replace a power supply under power, without
interrupting applications.
PFC500 RAID Storage Chassis — A storage system that includes a chassis, up to
10 disk modules, one or two RCs, and one or two power supplies. A PFC500 can
support up to two PFC 500E RAID Expansion Chassis (each with up to 10 disk
modules) in addition to its own 10 disk modules, for a total of 30 disk modules.