Patent application number | Description | Published |
20080209304 | Convolution-Encoded RAID with Trellis-Decode-Rebuild - A Redundant Array of Independent Devices uses convolution encoding to provide redundancy of the striped data written to the devices. No parity is utilized in the convolution encoding process. Trellis decoding is used for both reading the data from the RAID and for rebuilding missing encoded data from one or more failed devices, based on a minimal, and preferably zero, Hamming distance for selecting the connected path through the trellis diagram. | 08-28-2008 |
20080253273 | Computer Program Product for Controlling an Apparatus for Accessing Dual-Path Optical Recording Media - A dual-path optical recording medium and an apparatus for accessing such are disclosed. The dual-path optical recording medium includes a substrate, an intermediate recording layer, a holographic recording layer and a dichronic mirror layer. The intermediate recording layer is a rewritable data storage layer with a relatively low storage capacity. The holographic recording layer is a write-once data storage layer with a relatively high storage capacity. The dichronic mirror layer is located between the holographic recording layer and the intermediate recording layer. The apparatus for accessing the dual-path optical recording medium includes a first light module capable of generating a first laser light, and a second light module capable of generating a second laser light. | 10-16-2008 |
20080256566 | Dual-Path Optical Recording Media and an Apparatus for Accessing Thereof - A dual-path optical recording medium and an apparatus for accessing such are disclosed. The dual-path optical recording medium includes a substrate, an intermediate recording layer, a holographic recording layer and a dichronic mirror layer. The intermediate recording layer is a rewritable data storage layer with a relatively low storage capacity. The holographic recording layer is a write-once data storage layer with a relatively high storage capacity. The dichronic mirror layer is located between the holographic recording layer and the intermediate recording layer. The apparatus for accessing the dual-path optical recording medium includes a first light module capable of generating a first laser light, and a second light module capable of generating a second laser light. | 10-16-2008 |
20080270843 | CONVOLUTION-ENCODED DATA STORAGE ON A REDUNDANT ARRAY OF INDEPENDENT DEVICES - A method, system and article of manufacture for the storing convolution-encoded data on a redundant array of independent storage devices (RAID) is described. The convolution-encoded data comprises error correction coded data to eliminate the need for parity as used in conventional RAID data storage. The number of storage devices may vary to accommodate expansion of storage capacity and provide on demand storage. | 10-30-2008 |
20090006891 | Apparatus, System, and Method for Hard Disk Drive Redundancy - An apparatus, system, and method are disclosed for hard disk drive redundancy. A demarcation module demarks a parity data block in each set of a specified number of data blocks on a hard disk drive. An association module associates a PBA of each un-demarked data block with a LBA. A write module writes the data to the un-demarked data blocks. A parity module calculates parity data for the data written to the un-demarked data blocks and the write module writes the parity data to the parity data block. | 01-01-2009 |
20090021856 | DIFFERENTIAL TIMING BASED SERVO PATTERN FOR MAGNETIC-BASED STORAGE MEDIA - A magnetic storage media includes a magnetic first-pole polarity initialized servo track segment and a magnetic second-pole polarity differential timing based servo pattern recorded on the magnetic first-pole polarity initialized servo track segment. The magnetic second-pole polarity differential timing based servo pattern represents magnetic encoded servo position information for facilitating a determination of a servo position error signal exclusive of noise. | 01-22-2009 |
20090027801 | DIFFERENTIAL TIMING BASED SERVO PATTERN FOR MAGNETIC-BASED STORAGE MEDIA - A magnetic storage media includes a magnetic first-pole polarity initialized servo track segment and a magnetic second-pole polarity differential timing based servo pattern recorded on the magnetic first-pole polarity initialized servo track segment. The magnetic second-pole polarity differential timing based servo pattern represents magnetic encoded servo position information for facilitating a determination of a servo position error signal exclusive of noise. | 01-29-2009 |
20090048798 | Method for Performing Write Calibrations on Holographic Storage Media - A method for performing write calibrations on holographic storage media is disclosed. Initially, five identical and known calibration holograms are written on a holographic storage medium, in which three of the five calibration holograms are written with different laser power and three of the five calibration holograms are written with different time durations. A matched filter is then utilized to determine a cross-correlation between the five calibration holograms read from the holographic storage medium and their corresponding ideal calibration holograms previously stored within a memory device within the holographic storage drive. A least-squares fit of an ellipsoidal parabola to the cross-correlations is subsequently calculated to yield an optimal laser write power level and an optimal duration for a laser write pulse. | 02-19-2009 |
20090063410 | Method for Performing Parallel Data Indexing Within a Data Storage System - A method for performing parallel data indexing within a data storage system is disclosed. After the receipt of a group of data objects, the data objects are copied to an indexing module. Next, the copy of data objects within the indexing module are indexed by the indexing module while the data objects are being stored within a storage medium. The indices of the copy of data objects within the indexing module are stored in an index repository within the indexing module. | 03-05-2009 |
20090187924 | Resolving SAS timing issues for long-distance SAS extender - This invention extends the distance at which a SAS extender can function. The distance is increased a large amount over the traditional 10 meters. As a result timers will not go off before the response can make a trip back. This is accomplished by emulating as a SAS expander, using SAS AIP's (Arbitration In Progress), and using a lookup table to determine which SAS events must be responded to immediately and which ones to be passed on to the remote link. | 07-23-2009 |
20090196143 | Method and System for Command-Ordering for a Disk-to-Disk-to-Holographic Data Storage System - A system, method and computer program product for managing command ordering for a host-Disk-to-intermediate-Disk-to-Holographic (D2D2H) data storage system. Specifically, a command ordering detects a command from a host system. A hologram segment associated with the detected command is identified and a determination is made whether the hologram segment is an open hologram segment or a closed hologram segment. A determination is made whether the detected command is to be prioritized. If the detected command is prioritized, the detected command is added to a prioritized command queue. Moreover, if the detected command is not prioritized, the detected command is added to a normal command queue. The detected commands addressing the same hologram segment are then grouped. The execution of one or more grouped commands (prioritized or normal) is deferred for a predetermined period to allow for additional commands to be received for a same command group. | 08-06-2009 |
20090196144 | Method and System for Command-Ordering and Command-Execution Within a Command Group for a Disk-to-Disk-to-Holographic Data Storage System - A system, method and computer program product for managing command ordering and command execution for a host-Disk-to-intermediate-Disk-to-Holographic (D2D2H) data storage system. Specifically, a command ordering and execution (COE) utility selects the command group from a command queue. A determination is made whether the command group includes a write command for writing an entire hologram segment. Responsive to a determination that the command group does not include the write command for writing the entire hologram segment, the entire hologram segment is read to an intermediate system disk. Conflicting commands are then sorted from non-conflicting commands. Specifically, all conflicting write commands are executed before all conflicting read commands. After execution, the entire hologram segment of the intermediate system disk is closed and written in holographic medium. | 08-06-2009 |
20090196988 | HOLOGRAPHIC DISK WITH 2P TRACK-BEARING LAYER - A method for forming a holographic storage media, including: applying a liquid photopolymer to a substrate of glass, quartz, or polycarbonate, the substrate having a first surface; engaging a stamper with a negative of desired tracks on the liquid photopolymer; curing the liquid photopolymer with ultraviolet light creating a plurality of tracks; applying a reflective layer to the plurality of tracks; applying a gap layer to the plurality of tracks; applying a dichronic mirror layer to the gap layer; and applying a holographic storage layer to the dichronic mirror layer. | 08-06-2009 |
20090201243 | METHODS AND SYSTEMS INVOLVING DIURNAL COMPUTING - A method for controlling a computer system comprising, determining an ambient light level, starting a lighting device operative to illuminate an input device responsive to determining that the ambient light level is below a threshold value, and stopping the lighting device responsive to determining that the ambient light level is above the threshold value. | 08-13-2009 |
20090201782 | HOLOGRAPHIC DISK WITH OPTICAL-NOTCH-FILTER LABEL - A holographic disk, including: a holographic recording layer and a servo-tracking layer, the holographic recording layer separated from the servo-tracking layer by a dichroic mirror that prevents a data I/O laser from accessing the servo-tracking layer while allowing a servo-tracking laser to access embedded servo tracks; a transparent cover layer including at least one layer of optical notch filter that forms a label, the optical notch filter blocking light at a wavelength different from the data I/O laser and the servo-tracking laser; where the label is a color label including at least one of numbers, letters, descriptive figures, pictures, and barcodes. | 08-13-2009 |
20090249003 | METHOD AND SYSTEM FOR MULTIPLEXING CONCATENATED STORAGE DISK ARRAYS TO FORM A RULES-BASED ARRAY OF DISKS - A method, system and computer-readable medium are disclosed for efficiently multiplexing concatenated storage devices. An intelligent storage controller continuously monitors data access of a number of concatenated storage devices. In response to a request to write new data, the controller writes a primary data copy to the concatenated storage device having the lowest data access. Then the controller writes a secondary data copy to the device having the next lowest data access. In response to a read request, the controller reads data from the data copy located on the concatenated storage device having the lower data access. In response to an update request, the controller, after determining that data access does not exceed a predetermined threshold, the controller updates the data copy having the lowest data access, set that copy as the new primary copy and subsequently updates the other copy, setting that copy as the new secondary copy. | 10-01-2009 |
20090249255 | Method of and System for Adaptive Suggestion of Directories When Saving Files - A method of adaptively suggesting directories when saving files receives a request to save a file. The file has a file name and the file was prepared with an application. If a portion of the file name and the application with which the file was prepared are associated in the table with a single directory, the method suggests the single directory for saving the file in the single directory. If the portion of the file name and the application are associated in a table with multiple directories, the method suggests one of the multiple directories having a greatest count value for saving the file. If a user saves the file in the single directory, the method increments a count value in the table for the single directory and updates a time and date in the table for the single directory. If the user saves the file in the one of the directories having the greatest count value, the method increments the count value in the table for the one of the directories having the greatest count value and updates the date and time in the table for the one of the directories having the greatest count value a date and time. | 10-01-2009 |
20090249474 | SYSTEM AND METHOD FOR ADJUSTING THE SECURITY LEVEL OF A REMOVABLE MEDIUM - A method of adjusting a security level of a removable medium, including receiving a unique identification (ID) of a removable medium, a name of a file being processed, and a requested operation, determining the security level of the removable medium, determining a security level of the file being processed, and one of increasing and decreasing the security level of the removable medium based on the determined security level of the file being processed. Further, security levels of removable media are mapped to security zones which are subsequently used to allow or prevent transportation of a removable medium inside or outside of certain boundaries. | 10-01-2009 |
20090271659 | RAID REBUILD USING FILE SYSTEM AND BLOCK LIST - This embodiment (a system) addresses and reduces the RAID build time by only rebuilding the used blocks and omitting the unused blocks. This starts after a disk drive from a RAID system is failed and replaced and storage controller starts the process of rebuilding the data on the new disk drive. Storage controller determines the logical volumes that must be rebuilt, send a message requesting only used blocks for these logical volumes from the volume manager and then uses this information and only rebuild the used blocks for the failed disk system. | 10-29-2009 |
20090307563 | REPLACING BAD HARD DRIVE SECTORS USING MRAM - A method of a method of replacing bad sectors in a Hard Disk Drive comprises detecting bad sectors on the Hard Disk Drive; remapping the bad sectors to an auxiliary data storage device comprising an Magnetoresistive Random Access Memory connected to the Hard Disk Drive; and storing data on the auxiliary storage device. | 12-10-2009 |
20090310462 | FRUSTUM-SHAPED HOLOGRAPHIC DISC AND MATCHING TRAY IN A HOLOGRAPHIC DRIVE - A holographic disc comprises a multilayer right-circular frustum. The frustum includes a substrate layer having an inner surface and an outer surface. A reflective track layer is formed on the inner surface of the substrate layer. A first gap layer overlies the reflective track layer. A dichroic mirror layer overlies the first gap layer. A second gap layer overlies the dichroic mirror layer. A holographic recording layer overlies the second gap layer. A cover layer overlies the holographic recording layer. The cover layer has an inner surface in contact with the holographic recording layer and an outer surface. The frustum has a major diameter and a minor diameter. In one embodiment of the multilayer right-circular frustum, the outer surface of the said outer surface of the cover layer defines the minor diameter and the outer surface of the substrate layer defines the major. In another embodiment, the outer surface of the substrate layer defines the minor diameter and the outer surface of said the cover layer defines the major diameter. | 12-17-2009 |
20100046590 | EXTENDING TRANSMISSION DISTANCE IN A HIGH-SPEED SERIAL NETWORK - A data transmission system for transmitting data from a first location to a second location includes a transmitting device configured to transmit the data and located at the first location. The transmitting device includes a serial attached SCSI (SAS) enabled controller. The system also includes an I/O port coupled to the transmitting device and having multiple lanes and a repeater powered by one of the lanes. The system also includes a receiving device coupled to the second end of the cable. | 02-25-2010 |
20100121825 | FILE SYSTEM WITH INTERNAL DEDUPLICATION AND MANAGEMENT OF DATA BLOCKS - A method for deduplicating and managing data blocks within a file system includes adding a deduplication identifier to each pointer pointing to a data block to indicate whether the data block is deduplicated, detecting duplicate data blocks, determining whether one of the duplicate data blocks has been deduplicated, when detected, determining that one duplicate data block is a master copy when it is determined that one duplicate data block has been deduplicated, selecting one of the duplicate data blocks to be a master copy when it is determined that the duplicate data blocks have not been deduplicated, and setting the deduplication identifier of the selected duplicate data block to indicate deduplication, and determining that the other duplicate data block is a new duplicate data block and setting the deduplication identifier of the other duplicate data block to indicate deduplication and directing the respective pointer to the master copy. | 05-13-2010 |
20100180162 | Freeing A Serial Bus Hang Condition by Utilizing Distributed Hang Timers - A method for automatically detecting and correcting one or more hang conditions within one or more of a master device and target device of a serial bus interface when one or more signals are held in an invalid state. A hang timer monitors one or more operations of the serial bus when the serial bus is participating in a serial bus transfer. If the transfer does not end before the bus timeout value has been exceeded, the hang timer will issue a reset to the state machine forcing the state machine back to an idle state. The hang timer will also disable the serial bus drivers of the state machine, whereby the hang condition is corrected. | 07-15-2010 |
20100199021 | Firehose Dump of SRAM Write Cache Data to Non-Volatile Memory Using a Supercap - A mechanism is provided for firehose dumping modified data in a static random access memory of a hard disk drive to non-volatile memory of the hard disk drive during a power event. Responsive an indication of a power event in the hard disk drive, hard disk drive command processing is suspended. A token is set in the non-volatile storage indicating that flash memory in the non-volatile memory contains modified data. A portion of a static random access memory cache table containing information on the modified data in the static random access memory is copied to the flash memory. The modified data from the static random access memory is then copied to the flash memory. Responsive to a determination that the power event that initiated the copy of the modified data in the static random access memory to the flash memory is still present, the hard disk drive is shut down. | 08-05-2010 |
20100318820 | STORAGE SYSTEM POWER MANAGEMENT - A method for managing power consumed by storage systems and other devices is disclosed herein. In certain embodiments, such a method may include initially monitoring conditions (such as data traffic conditions) on a communication link between a first device and a second device. The method may further include determining whether the conditions on the communication link warrant powering down or powering up the second device. In the event the conditions warrant powering down the second device, a power-down command may be generated and transmitted from the first device to the second device. In the event the conditions warrant powering up the second device, a power-up command may be generated and transmitted from the first device to the second device. In selected embodiments, the power-up and power-down commands are one of SCSI commands and FICON commands. A corresponding apparatus, system, and computer-usable medium are also disclosed and claimed herein. | 12-16-2010 |
20110038639 | POWER-UP OF DEVICE VIA OPTICAL SERIAL INTERFACE - An optical communication serial interface is employed to power up a device from a powered down state to a powered on state. An optical receiver element receives serial optical signals transmitted by at least one optical fiber and converts the received serial optical signals to electrical signals. A low level reception converter detects and decodes the electrical signals to provide data and control words from detected and decoded normal electrical signals for a high level command processor. A power supply maintains low level power to at least the optical receiver element and the low level reception converter of the optical communication serial interface while the device is in the powered down state. The low level reception converter detects a particular abnormal sequence of electrical signals; and in response to detecting the particular abnormal sequence of electrical signals, asserts a control signal to power up the device controllable power supply. | 02-17-2011 |
20120207468 | POWER-UP OF DEVICE VIA OPTICAL SERIAL INTERFACE - An optical communication serial interface is employed to power up a device from a powered down state to a powered on state. An optical receiver element receives serial optical signals transmitted by at least one optical fiber and converts the received serial optical signals to electrical signals. A low level reception converter detects and decodes the electrical signals to provide data and control words from detected and decoded normal electrical signals for a high level command processor. A power supply maintains low level power to at least the optical receiver element and the low level reception converter of the optical communication serial interface while the device is in the powered down state. The low level reception converter detects a particular abnormal sequence of electrical signals; and in response to detecting the particular abnormal sequence of electrical signals, asserts a control signal to power up the device controllable power supply. | 08-16-2012 |
20120215971 | Firehose Dump of SRAM Write Cache Data to Non-Volatile Memory Using a Supercap - A mechanism is provided for firehose dumping modified data in a static random access memory of a hard disk drive to non-volatile memory of the hard disk drive during a power event. Responsive an indication of a power event in the hard disk drive, hard disk drive command processing is suspended. A token is set in the non-volatile storage indicating that flash memory in the non-volatile memory contains modified data. A portion of a static random access memory cache table containing information on the modified data in the static random access memory is copied to the flash memory. The modified data from the static random access memory is then copied to the flash memory. Responsive to a determination that the power event that initiated the copy of the modified data in the static random access memory to the flash memory is still present, the hard disk drive is shut down. | 08-23-2012 |
20130024401 | Apparatus and Method to Store Information - A data storage facility comprising a plurality of data storage media, an automated data storage library comprising a first plurality of storage cells, one or more data storage devices in communication with the controller, and a controller in communication with one or more host computers, a vault comprising a second plurality of storage cells, wherein the vault does not comprise any data storage devices, and a robotic accessor in communication with the controller, wherein the accessor comprises a gripper mechanism, and wherein the robotic accessor can bidirectionally transport each of the plurality of portable data storage media between the first plurality of storage cells and the one or more data storage devices. | 01-24-2013 |
20140163722 | Apparatus and Method to Store Information - A data storage facility comprising a plurality of data storage media, an automated data storage library comprising a first plurality of storage cells, one or more data storage devices in communication with the controller, and a controller in communication with one or more host computers, a vault comprising a second plurality of storage cells, wherein the vault does not comprise any data storage devices, and a robotic accessor in communication with the controller, wherein the accessor comprises a gripper mechanism, and wherein the robotic accessor can bidirectionally transport each of the plurality of portable data storage media between the first plurality of storage cells and the one or more data storage devices. | 06-12-2014 |
20140365791 | REMOTE POWER DOWN CONTROL OF A DEVICE - In remote power down control of a device configured for externally initiated remote power down, such as over a network, activity of all externally connected sources of valid power down requests for the device is monitored; and the device is powered down in response to a combination of one of a received power down request and an inactivity time out with respect to each of the sources of valid power down requests for the device. | 12-11-2014 |