International Business Machines Corporation

Jiwu Duan

John Charles Elliott

Todd Charles Sorenson

Brian Anthony Rinaldi

Trung Le

Steven Mark Groff

Gary William Batchelor

Ronald David Martens

Larry Juarez

Mark Elliott Hack

Juan Antonio Yanes

Matthew D Carson

Keith Geoffrey Morrison

Dennis W Fried

A method for protecting data in a storage system is disclosed. In one embodiment, such a method includes detecting, by a first hardware management console, first battery-on status associated with a first uninterruptible power supply. The method further detects, by a second hardware management console, second battery-on status associated with a second uninterruptible power supply. The method communicates, from the first hardware management console to the second hardware management console, the first battery-on status. The method then triggers, by the second hardware management console, a dump of modified data from memory to more persistent storage upon detecting both the first battery-on status and the second battery-on status. A corresponding system and computer program product are also disclosed.

Hardware-management-console-initiated data protection

A method for protecting data in a storage system is disclosed. In one embodiment, such a method includes detecting, by a first rack power controller, first battery-on status associated with a first uninterruptible power supply. The method further detects, by a second rack power controller, second battery-on status associated with a second uninterruptible power supply. The method communicates, from the first rack power controller to the second rack power controller, the first battery-on status. The method then triggers, by the second rack power controller, a dump of modified data from memory to more persistent storage upon detecting both the first battery-on status and the second battery-on status. A corresponding system and computer program product are also disclosed.

Rack-power-controller-initiated data protection

Provided are a computer program product, system, and method for adjusting an extended power line disruption time and end-of-life for at least one battery backup unit used in a system. A request is received to change from a first extended power line disruption time currently used in the system to a second extended power line disruption time. A first end-of-life and a second end-of-life correspond to the first extended power line disruption time and the second extended power line disruption time, respectively. A message is sent to a power distribution unit with information on the second extended power line disruption time to cause the power distribution unit to initiate a graceful shutdown of the system after power is supplied from the at least one battery backup unit for the second extended power line disruption time.

Adjusting an extended power line disruption time and end-of-life used for at least one battery backup unit in a system

A power system which includes a battery (or string of batteries) as well as a preemptive fuse driver, PFD, system. The PFD protection system reliably protects circuits that could be damaged by long term fault currents. More specifically, the PFD protection system includes a sensor and a controller as well as a controlled switch. The controller includes a PFD control module which allows protection to be tuned specifically to the source and load characteristics.

Battery circuit fault protection in uninterruptable power sources

Exemplary embodiments adapted to distribute power from four input lines to a plurality of power supply units (PSUs) configured in an N+1 architecture are provided. In one such embodiment, a plurality of rectifier devices have first and second ends, each of the plurality of rectifier devices connected at the first end to one of the four input lines, and adapted to be bypassed by a first relay in a first operating mode and provide rectified input current in a second operating mode. A plurality of second relays is connected between each of the second ends of the plurality of rectifier devices. The plurality of second relays are adapted to be closed in the second operating mode to sum the rectified input current from each of the plurality of rectifier devices in a single node connecting each of the plurality of PSUs.

Apparatus to maintain redundancy in four line system

A dual line active automatic transfer switch (ATS) is provided. A first switch structure is connected to a first PSU of the plurality of PSUs, and operable between a first position connecting a first input line of the dual line and a second position connecting a second input line of the dual line with the one PSU. A second switch structure is connected to at least one additional PSU of the plurality of PSUs, and operable between a third position connecting the first input line and a fourth position connecting the second input line with the at least one additional PSU. The first and second switch structures are operable between each of the first, second, third, and fourth positions to alternatively connect each of the plurality of PSUs to one of the first and second input lines and connect, when each of the dual lines is charged, both of the first and second input lines to at least one of the plurality of PSUs.

Growing community of inventors

Tucson, AZ, United States of America

Jiwu Duan