摘要:
The present invention provides a technique of controlling cache operation on a node device in a computer system that enables transmission and receipt of data between clients and a storage device via the node device. In accordance with a first control method, the data stored in the storage device includes attribute data, as to whether or not the data is cacheable. This application enables the node device to relay non-cacheable data without process of the cache. In accordance with a second control method, the node device encrypts the data when caching the data in the disk. In accordance with a third control method, non-cacheable data is transmitted and received directly without going through the node device. These applications enable the cache in the node device to be restricted, and thereby ensure security.
摘要:
The technique of the present invention enhances reading speed of data from a disk device in a computer system capable of transmission and reception of the data via a node device 200 between a client 100 and a storage device 300. A share volume PDc and specific volumes PDa and PDb are defined in the disk device on the storage device 300. Common data among respective clients and specific data corresponding to the individual client are stored in the share volume and specified volumes, respectively. Once respective clients request virtual volumes VDa and VDb to read the data, the storage device reads out the corresponding data from the share volume or the specific volume. This application avoids lowering the reading speed regardless of the concentration of accesses from a plurality of clients because most data can be read from the share volume.
摘要:
In provision against an unrecoverable failure in a first OS, a second OS for undertaking failure processing is loaded onto a memory beforehand. On detecting a failure in the first OS, a gate driver saves the first OS, moves the second OS to its executable area within the memory, and starts up the second OS. After this, control is transferred to a failure-processing application program placed under the control of the second OS.
摘要:
A service AP conducting ordinary business processing is executed on a first OS. The first OS includes an operation recording controller for recording operation conducted by the first OS as operation recording information together with time when the operation is conducted, and an auxiliary driver for accepting and executing external processing. A multi-OS controller interface included in a second OS, which is higher in reliability than the first OS, operates a multi-OS controller from an AP operating on the second OS. An analysis and prediction AP operating on the second OS analyzes states of the first OS and the service AP, and detects a failure sign. Upon detecting a failure sign, degrade operation of the OS or service AP to be analyzed, preparations for switching from an active system to a stand-by system, and actual switching are conducted before the failure occurs.
摘要:
A service AP conducting ordinary business processing is executed on a first OS. The first OS includes an operation recording controller for recording operation conducted by the first OS as operation recording information together with time when the operation is conducted, and an auxiliary driver for accepting and executing external processing. A multi-OS controller interface included in a second OS, which is higher in reliability than the first OS, operates a multi-OS controller from an AP operating on the second OS. An analysis and prediction AP operating on the second OS analyzes states of the first OS and the service AP, and detects a failure sign. Upon detecting a failure sign, degrade operation of the OS or service AP to be analyzed, preparations for switching from an active system to a stand-by system, and actual switching are conducted before the failure occurs.
摘要:
A method for efficiently auditing a call to an export function in a shared library from an application program executed by a computer and the computer executing the method are provided. The call method hooks a shared library call by using an injection shared library for hooking the export function in the shared library, records shared library call information and audits the shared library call. It is therefore possible to filter a shared library call without modifying the shared library and to generate consistent records at high speed.
摘要:
A storage device has a capability of learning access patterns by which a plurality of computers access to the device. The storage device stores a specific access history for each computer and causes a management computer to report a type of file access. This allows the storage device to save information in a cache memory before start of a file access to be executed by the computer.
摘要:
A method for updating information on security , in which the client is connected with a server through a network, the server including a storage device that is managed by the client, the storage device storing security information, the method comprising updating the security information stored in the storage device that the client manages in the server.
摘要:
A fault of an operating system (OS) is observed, and in addition to application program (AP) fault monitoring, check-point information is preserved without adding dedicated hardware. In a computer having a multi-OS environment, an AP fault monitor and a monitored AP operate on a first OS. A fault monitor operates on a second OS. Each of the first OS and the AP fault monitor transmits an alive message to the fault monitor by utilizing an inter-OS communication function of a multi-OS controller. The fault monitor monitors the alive message of each of the first OS and the AP fault monitor. The monitored AP also transmits an alive message to the AP fault monitor for monitoring. The monitored AP preserves check-point information in a region of a memory. In the region of the memory, information is preserved by a fault and restart of the first OS as well.
摘要:
The invention provides a mouth wetting agent and a mouth wetting agent for false teeth including a safe and easily usable polymer composition and capable of relieving symptoms of dry mouth by maintaining the wetting properties of an oral cavity and the stability of false teeth. The mouth wetting agent of the invention includes a polymer composition containing a pharmaceutically acceptable water-soluble polymer, a pharmaceutically acceptable polyvalent alcohol and water and/or artificial saliva.