Abstract: A method and apparatus for continued operation of a memory module, including a first and second memory device, when one of memory devices has failed. The method includes receiving a write operation request to write a data word, having first and second sections, by a first memory module. The memory module may have a first memory device and a second memory device, for respectively storing the first and second sections of the data word. A determination if one of the first and second memory devices is inoperable is made. If one of the first and second memory devices is inoperable, a write operation is performed by writing the first and second sections of the data word to the operable one of the first and second memory devices.

Abstract: Methods and data processing systems for using a buffer to replace failed memory cells in a memory component are provided. Embodiments include determining that a first copy of data stored within a plurality of memory cells of a memory component contains one or more errors; in response to determining that the first copy contains one or more errors, determining whether a backup cache within the buffer contains a second copy of the data; and in response to determining that the backup cache contains the second copy of the data, transferring the second copy from the backup cache to a location within an error data queue (EDQ) within the buffer and updating the buffer controller to use the location within the EDQ instead of the plurality of memory cells within the memory component.

Abstract: An approach is provided in which a subsystem cooling manager detects an increased workload indicator corresponding to a computer subsystem's forthcoming workload requirement. The forthcoming workload requirement corresponds to future computing resources required by the subsystem to support one or more software programs executing on the computer system. The subsystem cooling manager determines that the forthcoming workload requirement exceeds a utilization threshold and in turn, directs one or more cooling systems towards the corresponding subsystem according.

Abstract: A method, system and computer program product implement memory performance management and enhanced memory reliability of a computer system accounting for system thermal conditions. When a primary memory temperature reaches an initial temperature threshold, reads are suspended to the primary memory and reads are provided to a mirrored memory in a mirrored memory pair, and writes are provided to both the primary memory and the mirrored memory. If the primary memory temperature reaches a second temperature threshold, write operations to the primary memory are also stopped and the primary memory is turned off with DRAM power saving modes such as self timed refresh (STR), and the reads and writes are limited to the mirrored memory in the mirrored memory pair. When the primary memory temperature decreases to below the initial temperature threshold, coherency is recovered by writing a coherent copy from the mirrored memory to the primary memory.