摘要:
An apparatus, system, and method are disclosed for quick access of stored removable storage media. The apparatus includes an automated data storage library, a communications processor, and a media interface module. The automated data storage library has a plurality of storage cells, each storage cell having a media interface module for communicating with removable storage media. The communication processor module communicates with the media interface module of each storage cell. A grid bus couples the media interface module and the communication processor module. The system includes a storage area network coupling multiple hosts to at least one automated data storage library. The method includes communicating with the removable storage media, communicating with the media interface modules, and coupling the media interface modules to the communication processor module.
摘要:
A computing system implements a SAN attached automated Hierarchical Storage Library with diverse media types and media failover capability where storage communications destined for any one media type may be redirected to another media type for uninterrupted storage communications with a host system when a failover condition has occurred. A preferred embodiment comprises: a) a controller network interface for connecting the storage area to a network; b) at least one control unit for HDD and removable media emulation; c) a failover bridge for seamless protocol conversion between media types; d) an HDD interface for connection to a plurality of HDD's on at least one backplane; e) at least one dual redundant controller component with dual mirrored NVRAM's thereby providing dual primary and failover communications links for the plurality of HDD's and removable media drives; f) a removable media interface for a plurality of removable media or removable media emulators.
摘要:
A portable carrier for a data storage medium is disclosed. An accessor which includes an electromagnet and a fixturing assembly is disclosed. A data storage and retrieval system which includes at least one of Applicants' carriers and at least one of Applicants' accessors is disclosed. A method to releaseably attach Applicants' carrier to Applicants' accessor is disclosed. A method to retrieve, transport, and place Applicants' carrier within a data storage and retrieval system is disclosed.
摘要:
An optical fiber emulator. The emulator receives a digitally-encoded optical signal; demodulates the optical signal to produce serial electrical pulses representative of the digital signal; converts the serial pulses to parallel pulses; propagates the parallel pulses through a shift register whose propagation time is less than or equal to the time of a length of fiber to be emulated. The emulator then converts the parallel pulses at the output of the shift register to serial pulses; modulates an optical carrier with the serial pulses from the shift register; and attenuates the modulated optical signal an amount corresponding to the length of the fiber being emulated to produce an output optical signal whose propagation time is substantially equal to that of a section of optical fiber to be emulated. The shift register may be tapped at any point to obtain an output delayed by a desired amount corresponding to a selected section of optical fiber.
摘要:
An accessor moveably disposed within a data storage and retrieval system, where that accessor includes an information input/output device and a power supply connector disposed on a gripper mechanism such that the information input/output device and the power supply connector can be releaseably coupled/connected to an information input/output port and a power port, respectively, disposed on a hard disk drive unit disposed in a storage slot within the data storage and retrieval system. A data storage and retrieval system which includes one or more of Applicants' accessors, one or more hard disk disposed in one or more hard disk drive units each of which includes an information input/output port in communication with that hard disk, and an information transfer station in communication with a host computer, wherein that information transfer station can communicate with Applicants' accessor(s).A method to transfer information between one or more hard disks disposed in Applicants' data storage and retrieval system and a host computer using a memory device disposed on one or more accessors moveably disposed within Applicants' data storage and retrieval system. Applicants' data storage and retrieval system includes computer useable medium having computer readable program code disposed therein, where that computer readable program code comprises a series of computer readable program steps to implement Applicants' method.
摘要:
A method and apparatus for providing, in an automated data storage system having a plurality of removable data storage devices, independent memory devices associated with and physically attached to respective removable data storage devices for storing volume identification, RAID bundle information where applicable, and other drive specific information about their respective removable data storage devices. The removable data storage devices are typically hard disk drives, and the independent memory devices are preferably serial electrically-erasable programmable read-only memory (“EEPROM”) solid state memory devices. The EEPROM operates independently of the operation of its respective removable hard disk drive, does not require that the hard disk drive be powered up, and continues to operate in the presence of a catastrophic failure of the hard disk drive.
摘要:
One embodiment of a picking tool for an automated library of disk drives has an electromagnet, a tapered hole, and a ventilation system. The ventilation system has a box fan with an impeller for moving air through ducting located within the picking tool. The ducting includes a vents located adjacent to one surface of the picking tool. The picking tool is designed to work in conjunction with a disk drive carrier having a front bezel equipped with a tapered guide pin that is complementary to the tapered hole, and vent ports. The guide pin provides alignment between the carrier and the picking tool. The automated disk drive library has a rack with drawers for containing the carriers. The picking tool is mounted to a robotic arm for selectively engaging and interfacing with the carriers. After the picking tool aligns with a desired carrier, the picking tool moves toward the carrier to insert the guide pin into the tapered hole. The disk drive is ventilated by activating the ventilation system to force air through the ducting and vents to cool the disk drive via the vent ports. Ventilation may be performed regardless of the operational status of the disk drive.
摘要:
A method to sequentially deduplicate data, wherein the method receives a plurality of computer files, wherein each of the plurality of computer files comprises a label comprising a file name, a file type, a version number, and file size, and stores that plurality of computer files in a deduplication queue. The method then identifies a subset of the plurality of computer files, wherein each file of the subset comprises the same file name but a different version number, and wherein the subset comprises a maximum count of version numbers, and wherein the subset comprises a portion of the plurality of computer files. The method deduplicates the subset using a hash algorithm, and removes the subset from said deduplication queue.
摘要:
A method is disclosed to store and retrieve information using holographic data storage media. The method provides original data, generates a first image of that original data, and encodes that first image in a holographic data storage medium at a first storage location. The method then generates a second image of the original data, where the second image differs from the first image, and encodes the second image in a holographic data storage medium at a second storage location, where the second storage location differs from the first storage location.
摘要:
An apparatus, system, and method are disclosed for aberration compensation. In one embodiment, a first compensation lens used in conjunction with a second compensation lens to produce a conical beam used to read from, or write to, an optical medium. An Nth order compensation equation is used to optimize aberration errors associated with accessing the optical medium. The present invention may include a displaceable focus lens positioned relative to an optical medium. The focus lens may be displaced when the conical beam's focal length is adjusted. A displacement equation is presented to determine the preferred placement of the focus lens. By compensating for aberration, read/write errors may be reduced while accessing optical media thus increasing system robustness and facilitating the use of additional layers on optical media.