Disk drive cable replacement

You can replace the ribbon cables to the hard-disk drives and removable-media drives if needed.

The following cables can be replaced on site:

• IDE drive and DVD cable (MAS)
• IDE RAID drive and DVD cables (MSS-S)
• SCSI RAID controller cable or the DVD cable (MSS-H)

Replacing the IDE drive and DVD cable (MAS)

The Messaging Application Server (MAS) or a supplementary tracing server has one IDE drive and a DVD player. The ribbon cable for these drives can be replaced.

To replace the IDE/DVD drive ribbon cable:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. Verify that the replacement cable has three IDE connectors (one for the motherboard, one for the IDE drive, and one for the DVD).
3. Shut down the server and unplug the AC power cords.
4. Remove the front bezel and top cover.
5. Remove the circuit card hold-down bracket.
6. Remove the IDE/DVD drive cable as follows. See figure Replacing an IDE ribbon cable (MAS).
   1. Disconnect the IDE ribbon cable from the DVD and the IDE drive.
   2. Release the tie-down strap that holds the ribbon cable to the chassis.
   3. Disconnect the other end of the ribbon cable from the primary (PRI IDE) connector on the motherboard.
   4. Remove the cable. Set it aside.
7. Install the new cable by reversing the removal steps (see Step 6).

Caution! Fold the new cable carefully so it fits neatly into the chassis, but is not stressed.

8. Replace the circuit card hold-down bracket.
9. Replace the top cover and front bezel.
10. Restore power to the server.

If the server boots correctly, the new cable should be working.

Replacing IDE RAID drive or DVD cables (MSS-S)

The Message Storage Server standard configuration (MSS-S) has two IDE drives for data redundancy. The IDE ribbon cables to the RAID drives and to the DVD drive can be replaced.

To replace the ribbon cable for an IDE RAID drive or the DVD drive:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. Verify that the replacement cable has the correct number of IDE connectors:
• Two for the hda cable (one for the motherboard, and one for the lower IDE drive).
• Three for the hdc cable (one for the motherboard, one for the upper IDE drive, and one for the DVD).
3. Shut down the server and unplug the AC power cords.
4. Remove the front bezel and top cover.
5. Remove the circuit card hold-down bracket.
6. Remove the IDE cable as follows. See figure Replacing the IDE RAID ribbon cables (MSS-S).
   • For hdc (the upper drive) and DVD:
     1. Disconnect the IDE ribbon cable from the DVD and upper drive.
     2. Release the tie-down strap that holds the ribbon cables to the chassis.
     3. Disconnect the other end of the ribbon cable from the secondary (SEC IDE) connector on the motherboard.
     4. Remove the cable. Set it aside.
   • For hda (the lower drive):
     1. Disconnect the IDE ribbon cable from the lower drive.
     2. Release the tie-down strap that holds the ribbon cables to the chassis.
     3. Disconnect the other end of the ribbon cable from the primary (PRI IDE) connector on the motherboard.
     4. Remove the cable. Set it aside.

     Note: The ribbon cable for hda lies underneath the cable for hdc. You might need to partly remove the upper cable to replace the cable beneath it.

7. Install the new cable by reversing the removal steps (see Step 6).

Caution! Fold the new cable carefully so it fits neatly into the chassis, but is not stressed.

8. Replace the circuit card hold-down bracket.
9. Replace the top cover and front bezel.
10. Restore power to the server.

If the server boots correctly, the new cable should be working.

Replacing SCSI RAID controller or DVD cables (MSS-H)

The Message Storage Server high-availability configuration (MSS-H) contains two ribbon cables that are field replaceable:

• SCSI RAID controller cable
• DVD cable

Replacing the SCSI RAID controller cable

To replace the SCSI cable to the RAID controller card:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. Shut down the server and unplug the AC power cords.
3. Remove the front bezel and top cover.
4. Remove the circuit card hold-down bracket.
5. Remove the SCSI cable as follows. See figure Replacing the SCSI RAID controller cable (MSS-H).
   1. Disconnect the SCSI ribbon cable from the IDE connector on top of the RAID controller card.
   2. Disconnect the other end of the ribbon cable from the SCSI connector on the RAID disk-drive backplane.

   Note: You might have to unplug the IDE cable to the DVD to access the SCSI connector.

   3. Remove the cable. Set it aside.
6. Install the new cable by reversing the removal steps (see Step 5).
7. Replace the circuit card hold-down bracket.
8. Replace the top cover and front bezel.
9. Restore power to the server.

If the server boots correctly, the new cable should be working.

Replacing the DVD cable

To replace the IDE ribbon cable to the DVD drive:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. Shut down the server and unplug the AC power cords.
3. Remove the front bezel and top cover.
4. Remove the circuit card hold-down bracket.
5. Remove the DVD cable as follows. See figure Replacing the DVD cable (MSS-H).
   1. Disconnect the IDE cable from the DVD drive.
   2. Release the tie-down strap that holds the cable to the chassis.
   3. Disconnect the other end of the ribbon cable from the secondary (SEC IDE) connector on the motherboard.
   4. Remove the cable. Set it aside.
6. Install the new cable by reversing the removal steps (see Step 5).
7. Replace the circuit card hold-down bracket.
8. Replace the top cover and front bezel.
9. Restore power to the server.
10. Verify new drive operation.

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