Disclosed is a system and method for using a mirrored disk as a bootable backup disk for a computer system. A mirroring routine may be used to create a backup disk, then discontinued during normal operations. Should a problem occur with the main disk, the computer system may be rebooted using the backup disk and the main disk can be rebuilt from the backup disk using the mirroring routine. The system and method may be applied to two disk systems and various multiple-disk arrays such as RAID syst...

A high availability, high reliability storage system that leverages rapid advances in commodity computing devices and the robust nature of internetwork technology such as the Internet. A system of parity distribution in accordance with the present invention allows for greater fault tolerance and levels of storage efficiency than possible with conventional RAID (levels 0 5) paradigms. Data can be recovered or made available even in the case of loss of N, N+1, or more devices or storage elements o...

A user machine provided with a system of a software battery is connected to a host machine for providing a battery through a communications line, and a specific battery in a user machine is charged. The user machine includes a program for communications with the host machine and a software battery management system. The host machine includes a program having a function of listing available batteries, and transmitting a specified battery. With such a configuration, a user can select any battery f...

A memory system provides one or more control signals for configuring and controlling a memory sub-system during a power failure or system reset. A power delay circuit and a power fail controller cooperate to quickly place the memory system in a retention state in the event a power failure event is detected. The power delay circuit detects either a reset signal or power failure to initiate the memory retention state. The power delay circuit and power fail controller ensure the memory system is in...

A rapid self-error-check circuit of a computer power supply is disclosed, wherein a computer power supply is installed with a self-detecting device; an LED displaying light and detecting button are exposed on the casing of the power supply; thereby, the normality of the power supply can be detected by pressing a detecting button and then the result is displayed through the colors of the LED displaying light.

A program-controlled unit is described. The program-controlled unit has a central processing unit (CPU), peripheral units that are connected to the CPU via an internal bus, and debug resources that can be used to trace and influence operations taking place in the program-controlled unit. The program-controlled unit that is described is characterized in that the debug resources and the peripheral units, which output data from the program-controlled unit and/or can receive and pass on data which i...

A method and apparatus for testing the transmitter and receiver links of an I/O node. A test mode in an I/O node is initiated by a test signal driven from a test system to the I/O node via a loadboard. The I/O node may then receive test data through a peripheral bus interface. The inputting may be performed synchronously to a first clock signal. The I/O node may then transmit the test data to a receiver via a loopback mechanism on the loadboard. The transmission and reception of test data betwee...

Monitoring components that provide monitors for computer processes are disclosed, including a monitoring component that provides multiple monitors that may be selectively activated for a particular process where each monitor is responsive to a different type of event that signifies a defect. The monitoring component provides monitors including a debugger monitor, window monitor, a hang monitor, and a timeout monitor that may individually or collectively be activated for a process. A Remote Monit...

The present invention provides systems and methods for providing run-time type checking to prevent software errors. In architecture, a representative system includes a compiler that parses a program and further comprises a logic that generates a checksum for a block of code in the program, a logic that stores the checksum in the block of code, and a logic that inserts checksum instruction code into the block of code. The present invention can also be viewed as a method for providing run-time typ...

A method for updating a defect list in a DVD can include processing sectors on the DVD during a playback operation; adding references to selected ones of the processed sectors to a defect candidate list; identifying defective sectors among the selected ones of the processed sectors; and, adding references to the identified defective sectors to the defect list. Additionally, the method can include removing from the defect candidate references to each sector for which a corresponding reference has...