摘要:
A storage system has a controller and a plurality of storage devices connected to a pair of loops, the controller diagnoses storage devices and performs automatic high-speed restoration of the loops. A storage system has a controller, a plurality of storage devices, and switch circuits having a plurality of switches to connect each of the plurality of storage devices to loops. When a loop anomaly is detected, a restoration instruction is issued to a switch circuit, the plurality of switches are operated in parallel, storage devices are diagnosed, and according to the diagnosis results, a storage device judged to be anomalous are bypassed from the loop by operating the switches. When a loop anomaly is detected, diagnosis of the disk drives connected to the loop can be performed in parallel, so that the time until automatic restoration of the loop can be greatly reduced.
摘要:
A storage system has a controller and a plurality of storage devices connected to a pair of loops, the controller diagnoses storage devices and performs automatic high-speed restoration of the loops. A storage system has a controller, a plurality of storage devices, and switch circuits having a plurality of switches to connect each of the plurality of storage devices to loops. When a loop anomaly is detected, a restoration instruction is issued to a switch circuit, the plurality of switches are operated in parallel, storage devices are diagnosed, and according to the diagnosis results, a storage device judged to be anomalous are bypassed from the loop by operating the switches. When a loop anomaly is detected, diagnosis of the disk drives connected to the loop can be performed in parallel, so that the time until automatic restoration of the loop can be greatly reduced.
摘要:
A storage apparatus configured to store data received from a host system in a drive unit includes a memory unit partitioned into a cache area configured to temporarily store data read out from the drive unit and data to be written in the drive unit and an information storage area assigned for a memory pool configured to hold information for internal processing of the storage apparatus; an information-storage-area management table in which information-storage-area management information including position information on the memory pool in the memory unit is registered; a cache-area management table in which cache-area management information including usage status of the cache area is registered; and a memory control unit configured to acquire a memory area in the cache area having the least amount of write pending data in a pending state for writing in the drive unit by referring to the cache-area management table.
摘要:
A code conversion apparatus, a disk drive, a code buffer, and an encryption buffer are included in a storage. The code buffer stores therein first encrypted data present in the disk drive, and the encryption buffer stores therein first unencrypted data present in the disk drive. An encrypting unit encrypts the first unencrypted data present in the encryption buffer to predetermined encrypted data, and a decrypting unit decrypts the first encrypted data present in the code buffer to second unencrypted data. Moreover, a re-encrypting unit decrypts the first encrypted data present in the code buffer to third unencrypted data and encrypts the third unencrypted data to second encrypted data different from the first encrypted data.
摘要:
When recording a large volume of data such as video data, audio data, or the like, it is desirable to delete menus for unnecessary files and thereby enable quick and efficient access to data. An optical recording medium having a data recording medium which is divided into at least a readable/writable first region and a second region used exclusively for data reading. The first region has recorded therein a title management information table in which filenames of software titles are registered in the second region, and a loader for executing or reproducing these software titles, wherein the loader and the software title correspond to each other. The second region has recorded therein at least two types of software titles.
摘要:
A removable storage medium relates to a removable storage medium embodying an external storage medium for computer equipment. The removable storage medium can be inserted in an external storage apparatus connected to a computer equipment unit, and stores predetermined programs. The removable storage medium includes a correspondence table for specifying a correspondence relation between a physical drive configuration of the computer equipment unit connected to the external storage apparatus and a logical drive configuration of the stored programs. A recording device is provided for recording information on the correspondence table.
摘要:
A storage system includes a storage and control units. In each of the control units: a relay unit relays access to the storage; an access controller accesses the storage through one of the relay unit in the control unit and the relay unit in another of the control units; and an operational-state controller determines whether or not the relay unit in the above-mentioned another control unit is usable when the operational-state controller detects occurrence of an abnormality in the above-mentioned another control unit, and makes the above-mentioned another control unit transition to a partially-operational state when the relay unit in the above-mentioned another control unit is usable. In the partially-operational state, at least the access controller in the above-mentioned another control unit is not in operation and the access controller in the control unit can access the storage through the relay unit in the above-mentioned another control unit.
摘要:
A code conversion apparatus, a disk drive, a code buffer, and an encryption buffer are included in a storage. The code buffer stores therein first encrypted data present in the disk drive, and the encryption buffer stores therein first unencrypted data present in the disk drive. An encrypting unit encrypts the first unencrypted data present in the encryption buffer to predetermined encrypted data, and a decrypting unit decrypts the first encrypted data present in the code buffer to second unencrypted data. Moreover, a re-encrypting unit decrypts the first encrypted data present in the code buffer to third unencrypted data and encrypts the third unencrypted data to second encrypted data different from the first encrypted data.
摘要:
Disclosed is a terminal structure of a wiring harness for automobile use that has a profound anticorrosive effect. A terminal member is fixed to an end portion of a coated electric wire such that a crimping portion that the member includes at its one end is crimped around an outer surface of a coating portion of the wire. A resin member is formed to completely cover at least entire outer surfaces of an exposed region at an end portion of the crimping portion (a region including a fracture cross section and a root edge portion) and a region in the vicinity thereof. The resin member is made mainly of an epoxy resin, and a cured material obtained by curing a material having a viscosity from 1000 to 30000 mPa·s at 25 degrees C., which is measured in accordance with the JIS Z8803.
摘要:
In a storage system, a first reboot controller in a first control apparatus causes a second control apparatus to reboot, when it is detected that a second control apparatus has stopped access operations. The first reboot controller also places a boot event record in a non-volatile storage device of the second control apparatus to indicate that the rebooting of the second control apparatus has been caused by the first control apparatus. After that, a second reboot controller in the second control apparatus causes at least the first control apparatus to reboot while keeping intact the cache data stored in a cache memory of the first control apparatus, when the access controller of the first control apparatus is stopped while the second control apparatus is rebooted, and when a boot event record is found in the non-volatile storage device of the second control apparatus.