Bull S.a.

Bull Sas

Laurent Cargemel

Georges Lecourtier

Daniel Carteau

Jacques Delepoulle

Gilbert Michaud

George Lecourtier

Michaud Gilbert

An electrical assembly including an installation having an alternating current power supply port and at least one electrical system, and a device for supplying without interruption with alternating current the power supply port. The uninterruptible power supply device includes a first circuit for electrically connecting the power supply port to an alternating current power supply network, and a back up device including a rectifier, means for charging, storing and discharging electrical energy, and an inverter, connectable to the power supply port. The back up device is arranged in a second alternating current power supply circuit connectable to the power supply port in a by-pass of the first circuit. The uninterruptible power supply device includes a switch to connect selectively the first or the second circuit to the power supply port as a function of a state of the power supply of the electrical system in the installation.

Electrical assembly and method for supplying without interruption an installation with alternating current

A disk cache device for secure writing comprising a backup power supply source ( ) for supplying backup power for a given duration to a computer system fed by two main electric power supply devices ( ) and comprising at least one hard disk drive ( ), and a host system ( ). All of the disk drives ( ) are linked by a bus ( ) to a connection ( ) of the host system ( ) (host bus adapter), and a monitor ( ) for monitoring at least the backup electric power supply source ( ) and the main power supply devices ( ). Monitors ( ) are connected to the interface ( ) and can be interrogated by an interrogator ( ) for interrogating the host system ( ) so that the latter can enable the write disk cache function, or not, in the write commands to be sent to the disk drives ( ) in accordance with the information gathered by the monitoring means ( ).

Disk cache device and method for secure writing of hard disks in mass memory subsystems

The present invention relates to a disk storage subsystem with multiple configurable interfaces, characterized in that it comprises at least one interface adapter board ( ), at least one drawer ( ), each comprising a plurality of disks ( ), each drawer ( ) being connected to an adapter board ( or ) by SCSI disk interfaces ( ), a first adapter board ( or ) comprising a switch ( ) for modifying the addressing system of the disks ( ) of at least one drawer ( ), the adapter board or boards ( ) each comprising two independent single-ended/differential-ended SE/DE converters ( ), each SE/DE converter ( ) being connected to a drawer ( ) and fed by either of two direct current/direct current DC/DC converters ( ) of the adapter board ( ), and two external SCSI connectors ( ) being connected to each SE/DE converter ( ).

Disk subsystem with multiple configurable interfaces

A multidisk storage system (SD) equipped with a redundancy mechanism comprises at least two disk units (UND,-UND,), at least one redundancy control unit (UNC,-UNC,), a power distribution point (P), and a control unit (EG,-EG,), located in proximity to the point (P), for triggering the opening of the corresponding line (LI,-LI,) in case of an electrical fault in the associated unit and in the line itself. This system therefore ensures an optimal protection against electrical faults and ensures an optimal availability of the data.

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Avrille, France

Laurent Cargemel