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AssigneeBull SAS
InventorsLaurent Cargemel, Daniel Carteau, Jacques Delepoulle
Estimating the term…
A disk cache device for secure writing comprising a backup power supply source (62) for supplying backup power for a given duration to a computer system fed by two main electric power supply devices (60, 61) and comprising at least one hard disk drive (1a, 1b, 1c), and a host system (3). All of the disk drives (1a, 1b, 1c) are linked by a bus (2) to a connection (30) of the host system (3) (host bus adapter), and a monitor (50) for monitoring at least the backup electric power supply source (62) and the main power supply devices (60, 61). Monitors (50) are connected to the interface (2) and can be interrogated by an interrogator (31) for interrogating the host system (3) so that the latter can enable the write disk cache function, or not, in the write commands to be sent to the disk drives (1a, 1b, 1c) in accordance with the information gathered by the monitoring means (50).
Disk cache device for secure writing comprising a host system (3) an adapter (30) for linking the host system to a bus (2), an interface (12) and at least one hard disk drive (1), a backup power source (62) for supplying backup power for a given duration, and at least one power supply main device (60, 61) for supplying electric power to the disk drive, a monitor (50) for monitoring at least the backup power supply source (62) and the main power supply devices (60, 61), the host system including an interrogator (31), the monitor (50) being connected to the interface (2) and adapted to be interrogated by the interrogator (31) of the host system (3) so that the host system can enable a write disk cache function, or not, in write commands to be sent to the disk drive or drives (1a, 1b, 1c), in accordance with the information gathered by the monitor (50).
A method for secure writing in a computer system comprising at least one hard disk drive (1a, 1b, 1c) fed by at least one main electric power supply device (60, 61) and a backup electric power supply (62) for supplying power for a given duration, a host system (3) linked by an adapter (30) of the system and a bus (2) to at least the disk drive, and a monitor (50) for monitoring at least the backup electric power supply source (62) and the main power supply devices (60, 61), characterized in that the method comprises:
Dependencies are inferred from the claim text.