DS8000 Service Documentation Version 7.5

Positioning Rack-1 and checking any expansion racks

About this task

DANGER
HEAVY EQUIPMENT -- PERSONAL INJURY OR EQUIPMENT DAMAGE MAY RESULT IF MISHANDLED (D006)

Procedure

  1. Verify that the new location meets the necessary service clearances for the storage facility, which include any expansion racks. See the installation site requirements for the DS8000® in the IBM® DS8870 Introduction and Planning Guide.
  2. Do you have more than one rack to install?
    • Yes, continue at the next step.
    • No, go to step 4.
  3. You must ensure that each expansion rack is installed to the base rack (Rack-1) that it was originally configured with.
    Note: If expansion racks for two storage facilities are accidentally intermixed, a successful installation will not be possible.
    • Each rack has a small label Callout label 1 with its rack S/N above the front or rear cover latch release. See Figure 1.
    • Each rack has a large label Callout label 2 with its rack number (position in the storage facility) and the S/N of the Rack-1 it must be installed to. The label is above the UEPO switch inside the front cover. See Figure 1.
      Note: Rack-1 may or may not list its own S/N in the S/N of Rack-1 field.
    Figure 1. Rack serial number and rack number labels (Models 961, 96E) (Rack-4 not shown)
    Rack serial number and rack number labels (Models 961, 96E)
  4. Move Rack-1 to its permanent location and install the wheel chocks Callout label 1 (located in the ship group) on all four casters. See Figure 2. If the racks will be installed on a raised floor, position the rack so the rear tailgate, especially the rightmost opening for the mainline power cables, is directly over the floor tile cutouts.
    Note: If the storage facility is configured for overhead cable management (top exit), floor tiles with cutouts may not be required. Refer to step 6 in Checking final preparations.
    Figure 2. Wheel (wedge) chocks
    Wedge chocks
  5. On each rack being installed, open the front and rear covers.
    1. Open the front cover.
    2. Open the left rear cover (customer access area).
    3. Open the right rear cover (trained service personnel access area only). Remove the two screws Callout label 1. See Figure 3
      Note: The screws must be reinstalled when the cover is closed to prevent customer access.
    Figure 3. Removing retaining screws on right rear machine cover
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  6. On each rack being installed, to access the rear of the DC-UPS, unfasten Callout label 1 and then rotate the upper and lower sets of power distribution units (PDUs) away from the rear of the DC-UPS, as shown in Figure 4.
    Figure 4. Power distribution units in normal position (rack rear view)
    Power distribution units in normal position (rack rear view)
  7. Is Rack-1 a DS8870 All Flash storage facility shipped with a top exit tailgate for host cables?
    • Yes, go to 11
    • No, go to the next step.
    Figure 5. Removing top tailgate cover plate
    Removing top tailgate cover plate
  8. Does Rack-1 or Rack-2 have an upper "funnel" bracket  2  at the rear top left of the rack? See Figure 6.
    • Yes, go to the next step.
    • No, go to step 12.
    Figure 6. Removing top tailgate cover plate
    Removing top tailgate cover plate
  9. Looking down at the top left rear of the rack, inspect the top tailgate cover plate screw  3 . See Figure 6.
    • If the screw is installed from the top (only screw head is visible), go to the next step.
    • If the screw is installed from inside the rack, (only threaded end is visible) go to step 11.
  10. The screw is installed from the top of the rack. Install the screw from inside the rack and then install the top tailgate.
    1. Remove and discard the nut  1  securing the upper "funnel" bracket  2  of the host cable channel. See Figure 6.
    2. Remove the long screw  3  from the top of the rack.
    3. Install the long screw  3  from inside the rack. The threaded end of the screw will extend out the top of the rack.
    4. At the top of the rack, remove the three screws that secure the cover plate to the top of the rack. Remove the cover plate.
    5. Store the cover plate in the document enclosure at the front top left of the rack.
    6. Position the tailgate assembly over the opening at the top of the rack. See Figure 7. Secure the assembly with the three screws that were removed in step d.
    7. Go to step 12.
      Figure 7. Top tailgate
      Top tailgate
  11. The screw is installed from inside the rack, or the system is a DS8870 All Flash. Install the top tailgate.
    1. Looking down at the top of the rack, remove the three screws around the top tailgate opening. See Figure 6. The rack was shipped with the cover plate already removed and stored in the document enclosure at the front top left of the rack.
    2. Position the tailgate assembly over the opening at the top of the rack. See Figure 7. Secure with the three screws that were just removed.
    3. Go to the next step.
  12. Continue at the next section.