Memory downsizing in a computer memory subsystem

Details Memory downsizing in a computer memory subsystem Memory downsizing in a computer memory subsystem

2011-07-19

2011-07-19

Lohn, Joshua A (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006200, C714S036000

Reexamination Certificate

active

07984326

ABSTRACT:
Memory downsizing in a computer memory subsystem, the subsystem including one or more channels of computer memory with each channel including several Dual In-line Memory Modules (‘DIMMs’) and each DIMM capable of on-die termination (‘ODT’). Memory downsizing according to embodiments of the present invention includes identifying, during a memory initialization test in a Power On Self Test (‘POST’) by a firmware module, a defective DIMM of a particular channel in the computer memory subsystem and disabling, by the firmware module, the defective DIMM, including enabling ODT for the defective DIMM without disabling any non-defective DIMMs.

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