摘要:
A Redundant Array of Independent Disks (RAID) controller receives new data that is to be written, wherein the new data is indicated in blocks of a first block size. The RAID controller reads old data, and old parity that corresponds to the old data, stored in blocks of a second block size that is larger in size than the first block size. The RAID controller computes new parity based on the new data, the old data, and the old parity. The RAID controller writes the new data and the new parity aligned to the blocks of the second block size, wherein portions of the old data that are not overwritten by the RAID controller are also written to the blocks of the second block size.
摘要:
A disk array unit connected to a host unit to give information thereto and receive information therefrom. The disk unit includes a plurality of disk units for storing information transmitted from the host unit and a management information recording device, formed by utilizing information storage areas in the disk units, for causing information relating to a logical unit for storing information from the host unit to correspond to information relating to the units. The invention further includes a control unit, when there is no access from the host unit to the logical unit for a predetermined time, for determining the disk units corresponding to the logical unit based on information recorded in the management information recording device and performing power saving of power supply for the disk units.
摘要:
A storage device 101 in one aspect of the present invention records/reproduces data to/from a plurality of exchangeable recording media 105 using a plurality of drive units 111. The plurality of recording media are stored in magazines 104, and are attached/detached to/from the storage device in a magazine-by-magazine manner. The storage device includes a transport section 108 for transporting a plurality of recording media between the magazine attached to the storage device and the plurality of drive units, and a RAID control section 103 for dividing data depending on a predetermined RAID to be formed by a plurality of recording media and recording in parallel the data to the plurality of recording media using two or more of the drive units, wherein one RAID is formed by one magazine.
摘要:
Various embodiments of the present invention provide systems and methods for data processing that includes selectively reporting results out of order or in order.
摘要:
The present inventions are related to systems and methods for pre-equalizer noise suppression in a data processing system. As an example, a data processing system is discussed that includes: a sample averaging circuit, a selector circuit, an equalizer circuit, and a mark detector circuit. The sample averaging circuit is operable to average corresponding data samples from at least a first read of a codeword and a second read of the codeword to yield an averaged output based at least in part on a framing signal. The selector circuit is operable to select one of the averaged output and the first read of the codeword as a selected output. The equalizer circuit is operable to equalize the selected output to yield an equalized output, and the mark detector circuit is operable to identify a location mark in the equalized output to yield the framing signal.
摘要:
A system includes a utilization calculation module, a performance calculation module, an input module and an output module. The input module to receive a user-selection of tape drives and time ranges over which to calculate utilization data and calculate performance data. The utilization module to calculate utilization data of the selected tape drives over the selected time ranges. The performance module to calculate performance data of the selected tape drives over the selected time ranges. The output module to generate single data points representing output of utilization data and performance data of the respective selected tape drives, and to analyze the data points to determine whether to highlight the data points in a first user-definable display region representing higher utilization and performance tape drives relative to data points in a second user-definable display region representing lower utilization and performance tape drives.
摘要:
A method for maintaining paired data between tape cartridges and linking the paired data to through medium auxiliary memory devices is presented. One method includes providing a first tape cartridge possessing a first medium auxiliary memory device and a first tape medium and a second tape cartridge possessing a second medium auxiliary memory device and a second tape medium. Data maintained on the first tape medium can be copied to the second tape medium. A first record can be stored on the first medium auxiliary memory device indicating that data on the first tape medium was copied to the second tape medium. Likewise, a second record can be stored on the second medium auxiliary memory device indicating that data on the second tape medium originated from the first tape medium.
摘要:
The present inventions are related to systems and methods for pre-equalizer noise suppression in a data processing system. As an example, a data processing system is discussed that includes: a sample averaging circuit, a selector circuit, an equalizer circuit, and a mark detector circuit. The sample averaging circuit is operable to average corresponding data samples from at least a first read of a codeword and a second read of the codeword to yield an averaged output based at least in part on a framing signal. The selector circuit is operable to select one of the averaged output and the first read of the codeword as a selected output. The equalizer circuit is operable to equalize the selected output to yield an equalized output, and the mark detector circuit is operable to identify a location mark in the equalized output to yield the framing signal.
摘要:
Described embodiments provide a server for transferring data packets of streaming data sessions between devices. A redundant array of inexpensive disks (RAID) array having one or more stripe sector units (SSU) stores media files corresponding to the one or more data sessions. The RAID control module receives a request to perform the write operation to the RAID array beginning at a starting data storage address (DSA) and pads the data of the write operation if the amount of data is less than a full SSU of data, such that the padded data of the write operation is a full SSU of data. The RAID control module stores the full SSU of data beginning at a starting data storage address (DSA) that is aligned with a second SSU boundary, without performing a read-modify-write operation.
摘要:
A readout device includes a first recording medium having recorded therein data of arbitrary plural portions of a period of a predetermined length in temporally continuous content; a second recording medium having recorded therein data of the entire content; and a readout control unit that controls, when the readout of data of the content is requested, the readout of data from the first recording medium and from the second recording medium such that data of any one of the portions recorded in the first recording medium is read out and data following the data read out from the first recording medium is read out from the second recording medium.