POWER5 information.

Changing memory configuration

Display data for each memory unit and bank. You can change the state of each bank.

Each memory bank contains two DIMMs (dual inline memory module). If the firmware detects a failure, or predictive failure, of a DIMM, it deconfigures the DIMM with the failure, as well as the other DIMM, in the memory bank. If memory DIMMs are being monitored for errors, each memory bank will be in one of the following states:
  • Configured by system (cs)
  • Manually configured (mc)
  • Deconfigured by system (ds)
  • Manually deconfigured (md)
With ASMI, you can change the state of the memory bank from cs to md, from mc to md, and from md to mc for one or more DIMMs. If one DIMM is deconfigured, the other DIMM in the memory bank automatically becomes deconfigured.
Note: You can change the state of the memory bank only if the deconfiguration policy is enabled for the memory domain. If this policy is not enabled and you try to change the state, an error message is displayed.

The error type is the cause of memory deconfiguration and applies to the bank in the ds state. The error type is displayed only when the bank is in the ds state.

To perform this operation, your authority level must be one of the following:
  • Administrator
  • Authorized service provider

To view or change the memory configuration, do the following:

  1. On the ASMI Welcome pane, specify your user ID and password, and click Log In.
  2. In the navigation area, expand System Configuration and Hardware Deconfiguration.
  3. Select Memory Deconfiguration.
  4. In the right pane, select a node from the list of nodes displayed.
  5. Click Continue to change the state of memory to configured or deconfigured, if it is not already deconfigured by the system.
    Note: The state of the memory can be changed only if the system is powered off. At run time, users can view, but not change, the state of each processor. If the deconfiguration policy function is disabled, the state of the memory cannot be changed.
  6. Click Submit. A report page is displayed, which indicates success or failure when the state of the memory bank has been changed.