Specifications

MDR User Guide 115
G Glossary
BSP Board Support Package
DPIO Digital Parallel Input Output
FC-AL Fibre Channel Arbitrated Loop. A fast serial bus interface
standard.
FPDP Front Panel Data Port
HSSDC High Speed Serial Data Connector
IP Internet Protocol
JBOD Just a Bunch Of Disks.
MDR MIDAS Data Recorder. A high speed data recording system
running on a MIDAS board.
MDR Client A program (like the MDR Shell program) that controls the
MDR by sending commands to the MDR Server.
MDR File System File system used to organize all non-volatile MDR data, such
as recordings, recording table and administration structures.
MDR Server The program running on the i960 CPU on the MIDAS board
that administers the data recorder devices and serves
commands from MDR clients.
MDR Shell The user interface providing the commands needed for MDR
operation (mdrshell.exe on Windows and mdrshell on Solaris).
MIDAS VME board with one or two i960 CPUs, and up to 5 PMC
slots.
MTBF Mean Time Between Failures
PCI Peripheral Component Interconnect
PMC PCI Mezzanine Card
RAID Redundant Arrays of Inexpensive Disks
Recorder Block Data block of size Recorder Block Size. The space available to
the user to store data (on the storage device) is divided into a
number of blocks called recorder blocks. The number of
recorder blocks can be retrieved using the MDR Shell or MDR
API.
Recorder Block Size Block size of the MDR. This size can be retrieved using the
MDR Shell or MDR API.
Recording A continuous set of data stored in sequential recorder blocks
on the storage device. More information about the recording
attributes can be found in the header files..
Recording Table A table used to store the identifiers, size and location of all
recordings in the MDR system.
SBC Single Board Computer. Typically a MIDAS-xx0 board.
Storage Device The device which is used for storing the MDR recordings and
MDR File System.
UserSpace The part of the Storage Device that is available for the user.
UserSpaceSize Size of UserSpace.
RecordingBlocks Together with RecordingBlockSize, RecordingBlocks specify
the size of each recording.
RecordingBlockSize Size of a recording block.
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