User guide

14
MultiArray User Guide
Hardware Installation Procedure
Depending on the individual configuration, the installation procedure may involve installing SBC
boards, NICs, ISI boards, hard disk drives, and tape drives into your MultiArray rack, cabling, and
mounting the rack in a standard 19-inch rack enclosure. Perform the following procedures to
install your MultiArray.
WARNING: Anytime power has to be removed from the complete rack, turn off the Master Power
switches inside the front door. To turn off power to a subsegment, press the power switch for that
subsegment located under the vertical drive bay.
1 Remove the top cover by loosening the seven retaining screws on the top of the MA3a
chassis. Slide the cover towards the back of the chassis until the holes in the cover align
with the retaining screw heads. Lift the cover straight up and set it aside.
2 If you are installing boards using the factory default segment configuration (shown in
Figure 2-4), then proceed to Step 1 of the SBC installation procedure. Or:
To change from 2-slot segments to 4-slot segments:
Locate a bus jumper circuit board (Figure 2-3) and insert it into connector P1, P2, P3 or
P4 depending on the segment you are activating. Proceed with the installation of your
boards.
To change from 4-slot segments to 2-slot segments:
Remove the bus jumper circuit board (Figure 2-3) from the 4-slot segment you want to
change. Proceed with the installation of your boards.
Installing PC Boards
Perform the following procedures to install the PC board(s). Figure 2-4 shows a typical segment
installation.
12V
5V
-5V
-12V
12V
5V
-5V
-12V
IRQJUMPERS 15 12 11 10 7 5 4 3 2
OPEN
12345678
ISI (x2)
NIC
BANK 1
BANK 2
M1
M2
M3
M4
OPEN
12345678
SOCKET 7
LOCK
SBC
Figure 2-4. Component installation