7.1 Upgrading to Eight Disk Drives
7.1 Upgrading to Eight Disk Drives
Upgrading the disk array from four to eight disk drives involves plugging in the
new drive canisters and formatting the drives. Follow these steps to upgrade
your PDA to eight disk drives.
1. Open the PDA rear door to access the disk chassis.
2. Make sure the PDA circuit breaker is OFF.
3. Put on an antistatic wrist strap as a precautionary measure.
4. Remove the screws securing the blank panels covering the unused disk slots
(slot numbers 1, 3, 5, and 7). Remove the blank panels and discard them.
Remove the blank panel for slot "S" at this time if you are also installing a
standby drive.
5. Referring to Figure 1–9, install four new MUX PCBs on the DA backplane
MUX connectors: J1M1, J3M1, J5M1, and J7M1. (Install a fifth MUX printed
circuit board (PCB) if the optional standby disk is also being added.)
6. The new disk canisters are factory-configured and labeled. If there is a
need to alter the configuration, refer to Section 2.3.1 to set terminators and
jumpers on each new disk to correspond to the bank number.
Caution
Be sure to slide the canister squarely into the guide rails. Guide rails can
break if the canister is twisted to one side.
7. Align each new disk canister top and bottom edges in the nylon guide rails,
and push the canister squarely into the disk chassis.
8. Label each new disk with the correct bank and disk numbers if they are not
marked so.
9. Tighten the two captive screws securing each disk canister to the chassis.
10. Turn each disk canister switch ON (up).
11. Open the PDA front door.
12. Remove and save four screws attaching the disk array (DA) controller front
panel, and remove the panel.
13. Insert four new disk array (DA) controller cards in slots 1, 3, 5, and 7 (and in
slot 9 if standby disk is being added).
14. Use four screws to reattach the DA controller front panel.
15. Close both the front and rear doors.
16. Turn the PDA circuit breaker ON.
Factory-supplied disk canisters are shipped preformatted. If your drives are
from another source, you can now format the disks, following the procedures in
Chapter 4.
7–2 Upgrading the Parallel Disk Array
