SPARC T5-8
 
SPARC T4-4
 
Oracle SuperCluster T5-8 Hardware
 
SPARC SuperCluster T4-4
 

PLA-Support>Sun Systems>Sun_Other>Sun Collections>SN-OTH: SPARC-CAP VCAP
 

This describes the process required to remove and replace a rack PDU on an Oracle Virtual Compute Appliance SPARC T4-4 and SPARC T5-8 Servers

In this Document

Goal

Solution

References

Oracle Confidential PARTNER - Available to partners (SUN).
Reason: FRU CAP

Applies to:

Goal

Replace a failed Rack PDU with a new one.

Solution

DISPATCH INSTRUCTIONS
  WHAT SKILLS DOES THE ENGINEER NEED: Sun Rack II, SPARC T4-4, Oracle SuperCluster T5-8, Oracle SuperCluster SPARC T4-4
  TIME ESTIMATE: 120 minutes
  TASK COMPLEXITY: 2

FIELD ENGINEER/ADMINISTRATOR INSTRUCTIONS:
   PROBLEM OVERVIEW:

A Rack PDU is failed and needs replaced.

  WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY?

The PDU can be replaced hot, without taking power down to the rack. The 2nd operating PDU will maintain power to all of the units using the redundant power supplies in each server and switch.

Note:  The current Admin Guide says the PDUs are not hot-swap FRUs.  This is incorrect, they are hot-swappable.

If replacing hot, there are 2 potential risks to the operating rack:

1. From unlatching IB cables in the rack inadvertently. A loss of service in IB may result in nodes being evicted from the cluster which may bring down the rack. Care should be made if having to handle the IB cables, but the risk should be limited as the IB cables should be latched securely and should not unlatch without significant tension being placed on them from pulling.

2. If the rack is in a raised-floor environment, then it may be necessary to move the rack forward or backward in order to align the PDU plug with the floor tile cutout and rack floor cutout. Cut-outs should have been made large enough per the documentation, however that is not always followed particularly in older data centers. Extra care should be taken to ensure there is sufficient slack for any customer added network cables and multi-racking InfiniBand cables if present. In multi-racked environments, it is highly recommended to disable subnet manager on this rack prior to moving it, to ensure other racks are not impacted inadvertently to unplanned subnet manager failovers. In over-head cabling environments, the top cable pass through panel can be removed if necessary to facilitate passing the outlet plug through it, by undoing the screws that attach it on the top of the rack.

   WHAT ACTION DOES THE FIELD ENGINEER/ADMINISTRATOR NEED TO TAKE?:

Replace the PDU, following the process instructions detailed in MOS Note 1423708.1. That note also has 2 instructional videos attached for the removal and replacement showing how to do it live.

Once replaced, check the following settings on the new PDU:

1.  Set the correct static IP address obtained from the table 1 below.

Note: The PDU default is for a static IP address of 192.168.0.1. Therefore, in order to avoid creating an IP conflict, the PDU(s) will have to be setup individually and changed to the 192.168.4 address and name shown in Table 1. One method to do this would be to configure your laptop to an address on the 192.168.0 network and use back-to-back (crossover) or an external hub to connect to the PDU.

2.  Set the correct PDU name obtained from the table 1 below.

3.  Create user 'root' with password "Welcome1"  (The default user/password is admin/admin)

TABLE 1

The PDU name field will be a combination of the rack serial number “Rack SN” + “PDUA. For example, if the rack serial number was 1039AK2070 then the PDU A name would be “1039AK2070-PDUA”

OBTAIN CUSTOMER ACCEPTANCE
   WHAT ACTION DOES THE FIELD ENGINEER/ADMINISTRATOR NEED TO TAKE TO RETURN THE SYSTEM TO AN OPERATIONAL STATE?:

Verify the PDU is functioning, and all nodes and switches are no longer showing failed for the power supplies. On the nodes, use the front LED's. On the IB and Cisco switches, look through the vented filler panels to ensure both sides PSU's are green.

On the PDU, verify the current monitor is displaying the current draw on each input and outlet group. Use the button to toggle the direction and input being displayed (on units with more than 1 3-phase input).

Verify the PDU can be accessed over the network to display the current monitor in a web browser. This can be done via laptop connected to port 19.  If the PDU has been reconfigured for the customer's network, verify with the customer they can connect to the PDU as expected.

PARTS NOTE:

7078665 22KVA Single-Phase PDU, International

7051902 22KVA Single-Phase PDU, North America

7051905 22KVA Single-Phase PDU, North America

7051917 24KVA Three-Phase PDU, International

7052216 24KVA Three-Phase PDU, North America

7078659 24KVA Three-Phase PDU, North America


REFERENCE INFORMATION:

Document:1423708.1 - Replacement procedure for a Power Distribution Unit on an Engineered System using Sun Rack II

Document:1543240.1 - How to update firmware on a PDU in an Engineered System using Sun Rack II

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