User guide

16
MultiArray User Guide
Internal SBC Cabling
The internal cabling process involves the connection of each individual SBC to the mux card in
the MA3a chassis. The mux board connectors are shown in Figure 2-5.
HDD9 HDD8
HDD7
HDD6 HDD5 HDD4 HDD3
HDD2
HDD1
SFDD1
SHDD1
SHDD3
SFDD2
SHDD2
SFDD3
SHDD4
SFDD4
SHDD5
SFDD5
SHDD6
SFDD6
SHDD8
SFDD7
SHDD7SHDD9
SFDD8
SFDD9
CD-ROM Drive
Floppy Drive
Power for CD-ROM
and Floppy Drives
Figure 2-5. MA3a Mux Board Connectors
The connectors in Figure 2-4 have been labeled with acronyms that designate their segment
number and connection type. The three types of connector labels are SHDD n , SFDD n , and
HDD n (where n is the segment slot in which the corresponding SBC is installed). The “S”
indicates that the connection is between the mux board and the SBC. The designation of “FDD”
and “HDD” relate to the Floppy Disk Drive and Hard Disk Drive connectors accordingly. For
example, SFDD3 would indicate the connector is used to connect the floppy disk drive connector
on the SBC in segment 3. The information in this section details the SBC connections. For
information on connecting hard drives, refer to the Disk Drive Cabling section later in the guide.
Important: The SBC must have the HDD Block Mode function disabled in the BIOS for the CD-
ROM muxing to work properly. Refer to your SBC user documentation for instructions.