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User Manual
BC4000 Series RAID Controllers
02/13/06
B ro ad c om C o r p or at i on
Document
BC4000-UM100-R
Installing and Cabling BC4000 Hardware
Page 17
I
NSTALLING
H
ARD
D
ISK
D
RIVES
AND
C
ABLES
(BC4000)
RAIDCore BC4000 Series RAID controllers support native SATA drives and ATA drives that have been
converted to SATA with the use of a parallel to serial converter. Permanent or long-term use of parallel-to-
SATA converters is not supported; support is provided only for the length of time it takes to move the data off
the disk.
Figure 4: LED Connector Pinout
If there are separate LEDs, connect the positive side to pin 1 and the negative side to pin 2, and so on to
a maximum of 8 LEDs. If there are LEDs in the case that have a single common return line (that is, eight
lines for LEDs and one return line for a total of nine wires), attach the LED lines to the lower pins (1,3,5,7,
etc.) and attach the return to pin 17. If the LEDs are powered and do not have a return (such as the
SuperMicro “Brick”), attach the LED lines to 2,4,6,8 and so on, for a maximum of eight LED connections.
Pins 17 and 18 are common ground connections.
•
The controller supports a feature that staggers the spinup of each disk, sequentially leaving enough time
between disk starts to prevent overloading of the power supply. If possible, set the jumpers on the disks for
delayed spinup (some vendors call this autostart delay) . Consult the drive’s documentation for more
information.
•
There is a correlation between how long it takes to boot the system and how many disks are attached to
the controller. The greater the number of attached hard disk drives, the longer it takes for the system to
boot.
Notes:
•
Parallel to serial converters require the parallel ATA drive be configured as master. If a parallel
drive is configured as slave or cable-select, the parallel to serial converter will not function
properly.
•
The LED connector pinout is shown in
Figure 4
.
Board Edge