Abstract: A cluster system managing a plurality of disk drives as a component of a virtual RAID comprises a cluster manager and a control unit. The cluster manager converts a global command G into local commands and a parity calculate command. The control unit comprises a command conversion function means, a disk control means, a parity calculation means, and a command transfer means. The command conversion function means makes the cluster manager convert the command G into the commands. The disk control means reads/writes from/to the units to according to the commands. The parity calculation means calculates the parity according to the command. The command transfer means transfers the command to one of the computer, the disk control means and the parity calculation means according to the commands.

Abstract: To provide an electric or electronic circuit arrangement as well as a method of detecting and/or identifying and/or recording at least an access violation, particularly at least a memory access violation, in a microcontroller provided particularly for a chip card or smart card, with which the source causing this access violation (referred to as break source) as well as the code address occurring upon this violation can be detected and/or identified and/or recorded when an access violation occurs during the program run, the circuit arrangement comprises at least a memory unit; at least an interface unit assigned to the memory unit; at least a processor unit connected to the memory unit particularly via the interface unit for executing instruction codes.

Abstract: A storage processor particularly suited to RAID systems provides high throughput for applications such as streaming video data. An embodiment is configured as an ASIC with a high degree of parallelism in its interconnections. User memory may pass through memory in a single hop by combining parity generation with FIFO buffering in the read and write user data paths. Independent memory channels may be controlled to level the load providing high memory bandwidth.