International Business Machines Corporation

Michael K Schaefer

Marc Griffel

Karl H Uhl

Markus Reichart

Jacques Hummel

Mark D Lehmann

A computer optimizes the prospective generation of data used for analysis of a software problem. The computer generates data in accordance with data generation parameters and a software problem is analyzed with reference to the data so generated. The problem analysis produces a report that details specifics of the software problem, the data that was available for analysis, a flag to indicate success or failure of the analysis to identify a root cause, and information about whether the data supplied was insufficient, sufficient, or superfluous with respect to identifying a root cause of the software problem. The method then uses the analysis report to modify the data generation parameters, thereby iteratively optimizing the data that are generated for analysis of subsequent software problems.

Optimized generation of data for software problem analysis

A method for controlling operation of a heat exchanger system comprises providing a heat exchanger system mountable to a rear door of a rack mounted computer system, circulating a heat transport medium through the heat exchanger system, detecting leaks in the heat exchanger system by comparing a first flow rate in an inflow line to a second flow rate in a return flow line, emitting a leakage alert and ceasing further circulation of the heat transport medium through the heat exchanger system when the first flow rate exceeds the second flow rate by a predetermined flow amount, optimizing operation of the rack mounted computer system by monitoring an interior temperature of the rack mounted computer system in a plurality of vertical zones, and optimizing operation of the heat exchanger system by comparing a second temperature measured by a second temperature sensor in the return flow line with a predetermined maximum return flow temperature value.

Rear door heat exchanger instrumentation for heat quantity measurement

A server rack system comprises a server rack, a raised floor cooling system, and an exhaust system. The server rack includes a base, a front side, a rear side, and an interior portion including first, second, and third server rows. The raised floor cooling system includes a floor surface, ductwork disposed below the floor surface, a blower unit, and a vent. The exhaust system is coupled to the rear side of the server rack and includes a top portion, a bottom portion, and first, second, and third adjustable exhaust channels. In particular, the first adjustable exhaust channel has a first adjustable width, an exhaust inlet aligned with the first server row, and an exhaust outlet at the top portion of the server rack; the second adjustable exhaust channel has a second adjustable width, an exhaust inlet aligned with the second server row, and an exhaust outlet at the top portion of the server rack; and the third adjustable exhaust channel has a third adjustable width, an exhaust inlet aligned with the third server row, and an exhaust outlet at the top portion of the server rack. The first and second adjustable exhaust channels are separated by a first moveable guide plate, and the second and third adjustable exhaust channels are separated by a second moveable guide plate. The first and second moveable guide plates are adjustable in order to vary the first, second, and third adjustable widths of the respective exhaust channels based upon an amount of hot air that must be exhausted through each channel.

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Sidelfingen, Germany

Michael K Schaefer