摘要:
A method for mapping a write operation of an RAID device, includes flowing steps, initiating a mirroring device built in each member disk of the RAID device; activating a kernel thread, for monitoring the operation state of the RAID device, and recording current usage information; and if an incorrect write operation occurs to a member disk of the RAID device, storing the data of the incorrect write operation into a mirroring device of another member disk of the RAID device through the kernel thread. The method ensures the integrity and safety of the data stored in the RAID device and prevents the data from being lost when the member disk of the RAID device is replaced or severely damaged.
摘要:
A data repair and synchronization method of dual flash ROM is provided, which includes a first flash ROM and a second flash ROM that store the same system data, wherein one of the first flash ROM and the second flash ROM is used to perform a data repair on the other flash ROM with damaged data and perform a data synchronization between the two flash ROMs, thereby ensuring that once the data in one flash ROM is damaged during the system operation, the complete system data stored in the other flash ROM is used to recover the damaged operating system and the files in the system. Meanwhile, through performing the data synchronization periodically, important configuration files in the system stored in the two flash ROMs are kept to be updated and completed.
摘要:
An in-system programming system and method is provided, which is applicable for chip programming of a computer motherboard. Firstly, a programming interface is configured in the computer motherboard, in which one end of the programming interface is connected to an on-board programmer, and the other end is connected to a plurality of chips to be programmed, thereby achieving the communication between the on-board programmer and the chips. Next, a motherboard connector and the programming interface are connected, and the motherboard connector and the on-board programmer are communicated through a communication interface of the on-board programmer. Then, the other end of the motherboard connector is connected to a programmable master-control program. Then, when the programmable master-control program is used for programming, programming contents of the programmable master-control program are transmitted to the on-board programmer through the communication between the motherboard connector and the on-board programmer, so as to program the chip.
摘要:
A method of dynamically adjusting the number of task requests is provided, which is applicable to an Internet Small Computer System Interface (iSCSI) protocol. When a target receives a task request transmitted by an initiator or the target completes the task request, the number of transmissible tasks is calculated according to an average access data volume, an current access data volume, and an allowable access data volume in the target, and returned to the initiator, such that the number of the task requests transmitted simultaneously by the initiator does not exceed the number of transmissible tasks, thereby achieving flow control. The allowable access data volume is obtained through interactive and dynamic adjustment between the target and the initiator.
摘要:
A data transmission system and method and a method of selecting a communication path for a dual-controller system are provided, which are applied in a first controller and a second controller of the dual-controller system. First of all, a corresponding transmission medium is selected according to a feature of a data request issued by a controller, then the data request is converted into a data format compatible with a medium interface corresponding to the selected transmission medium and is sent to a corresponding medium driving portion connected with the medium interface, and the data request is sent to another controller through the medium driving portion and a connected corresponding medium controller, so as to select a path of the highest transmission performance, and realize the data transmission between the two controllers.
摘要:
A snapshot expansion system and a method, applicable to a logical volume manager, are provided. A snapshot space is allocated in a volume group space of a logical volume (LV) to create a snapshot. When a data write request is sent to the LV, the total capacity of the snapshot is compared with the current stored data volume of the snapshot space, thereby obtaining a difference representing the size of the remaining capacity of the snapshot space. Then, whether the difference is smaller than a preset value is detected. When the difference is smaller than the preset value, a capacity space is measured off in the volume group space to expand the capacity of the snapshot space through a standard expansion algorithm. The snapshot expansion system and method are capable of ensuring sufficient snapshot space to accommodate backup data, thereby ensuring availability of the snapshot.
摘要:
An Internet protocol (IP) address take-over system in a local area network and a method thereof are provided. The IP address take-over system takes over the IP addresses in a server connecting with a plurality of clients and containing a plurality of network interface cards, and automatically updates the media access control (MAC) addresses stored in the address resolution protocol (ARP) caches of the clients and corresponding to the IP address of the server, so as to guarantee the continuity of the network communication between the clients and the server, and improve the reliability of the server.
摘要:
A logic volume snapshot copy management method used for a logic volume manager. When there is a data write-in request, the plurality of snapshot copies established in the logic volume corresponding to the various time points are utilized to search in the logic volume for the data address of the data to be written. Then the data are copied into the snapshot copy of the last time point, at the data address of the data to be written in the logic volume, by Copy-On-Write (COW) operation. When there is a snapshot copy read request, the snapshot copy data at the requested data address is to be retrieved. Through the method, the function of a high-speed snapshot copy can be realized. In addition, the storage space used for a snapshot copy can be reduced.
摘要:
A method of protecting data in the cache memory of a storage system is used to protect the data stored in the cache memory of a first storage system and a second storage system coupled together and with the battery backed function. When the first storage system and the second storage system function normally, the data in their cache memory are mutually backed up. When any of the storage system has a power failure situation, the other normal storage system takes over the malfunctioned storage device. The data in its own cache memory are protected using the battery backed function. After the malfunctioned storage system restarts, the two storage systems keep backing up the data in the cache memory of each other. This provides a thorough protection of the data in the cache memory of the storage systems, increasing the reliability thereof.
摘要:
A method for expanding data flow applied in a network system comprising at least one client, at least two load balancers and at least one server. A first load balancer can automatically confirms whether it is overloaded or not and edit a hash table accordingly, so as to activate a second load balancer, thereby improving the processing capacity of the load balancer and keeping the clients from waiting for a long time due to the influence of the load balancer.