DS8000 Service Documentation Version 6.3.3
Determining if new and existing racks are compatible
Procedure
- Determine the model of Rack-1 and the expansion rack being
installed. The model number is on the machine type and model serial
number (MTMS) label. The MTMS label is on the front cover above the
door latch release. Figure 1. Rack serial number and rack number labels (Models 951, 95E)
- At the front of Rack-1 observe the P2-C2 slot in both CEC
enclosures.
Do both CEC enclosures have a processor card installed in the P2-C2 slot?- Yes, go to the next step.
- No, stop the installation. Call the next level of support. Rack-1 does not have the feature installed to support expansion racks.
Figure 2. CEC enclosure, P2-C2 slot
- Determine if Rack-1 has the extended power
line disturbance (PLD) feature 1055 installed.
- At the rear of Rack-1, observe the top rear of a primary power supply (PPS). Refer to Figure 3, location Ex-E2. If the feature is not installed, there is a sheet metal blockout plate as shown. If the feature is installed, there is a module installed with a cable connected to the 208 VDC bus bars to the right of the PPS.
Note: All racks in this storage facility must either have the PLD feature installed or not installed. There cannot be an intermix of racks with and without the PLD feature.Figure 3. Location codes for the PPS (rear)
- Find the row in Table 2 that
describes the PLD and battery configuration for the expansion rack
you are installing. Take the action listed for that row.
Table 2. Confirm correct battery configuration Expansion rack you are installing Extended PLD feature 1055 present? Number of battery enclosures in the expansion rack you are installing
(See Figure 4)Action Rack-2 Yes or No 2 or 3 Go to the next step. 0 or 1 Stop the installation and contact your next level of support. Rack 2 has I/O enclosures and requires the battery assembly feature. Rack-3 or Rack-4 Yes 2 or 3 Go to the next step. 0 or 1 Stop the installation and contact your next level of support. The PLD feature requires two battery module enclosures minimum. No 0 Go to the next step. 1, 2, 3 Stop the installation and contact your next level of support. Battery module enclosures must not be present when the PLD feature is not installed. Figure 4. Battery module locations
- Observe the rear of Rack-2.
Use Table 3, Figure 5,
and Figure 6 to determine
if the Rack-2 has enough DA cards installed. Note: A complete diagram of device adapter pair IDs for storage enclosures has been included at the end of this section. See Figure 7 and Figure 8.
Table 3. Determining if Rack-2 contains the necessary DA card pairs to support Rack-2 storage enclosures If the rear of Rack-2 has a storage enclosure with DDMs in location:
(See Figure 5)The rear of Rack-2 must have a DA card pair in I/O enclosure locations:
(See Figure 6)R2-G07 R2-XI1 Slot C6
R2-XI2 Slot C3
(DA pair 5)R2-G09 R2-XI3 Slot C6
R2-XI4 Slot C3
(DA pair 7)R2-G11 R2-XI1 Slot C3
R2-XI2 Slot C6
(DA pair 4)R2-G13 R2-XI3 Slot C3
R2-XI4 Slot C6
(DA pair 6)Does Rack-2 have the necessary DA cards?- Yes, continue with Inspecting for shipping damage.
- No, stop the installation. To install the existing storage enclosures in Rack-2, you must first install the MESs to add the necessary DA cards. It is possible to continue the installation without installing the MESs, but you will not be able to install the affected Rack-2 storage enclosures. Work with your customer and next level of support to decide how to proceed. If the decision is to proceed, continue with Inspecting for shipping damage.
Figure 5. Rack 1-4 storage enclosure and I/O location codes (rear view)
Figure 6. Locations for device adapter cards
Example
Figure 7. Device adapter pair IDs for
storage enclosures (Models 951, 95E) (rear view, racks 1 and 2)
Figure 8. Device adapter pair IDs for
storage enclosures (Models 951, 95E) (rear view, racks 3 and 4)