Method for configuring a single hardware I/O control block architecture for use with both mirrored and non-mirrored data transfers
February 12, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesData storage system for providing redundant copies of data on different disk drives Method for developing physical disk drive specific commands from logical disk access commands for use in a disk array High availability network disk mirroring system Direct memory access unit having a definable plurality of transfer channels Apparatus and method for analyzing and modifying data transfer reguests in a raid system Enabling mirror, nonmirror and partial mirror cache modes in a dual cache system Redundant storage with mirroring by logical volume with diverse reading process Remote data mirroring having preselection of automatic recovery or intervention required when a disruption is detected Apparatus and method that automatically scans for and configures previously non-configured disk drives in accordance with a particular raid level based on the needed raid level Communications system/method from host having variable-length format to variable-length format first I/O subsystem or fixed-length format second I/O subsystem using table for subsystem determination InventorAssigneeApplicationNo. 10779416 filed on 02/12/2004US Classes:710/5, Input/Output command process710/14, Mode selection710/20, Concurrent Input/Output processing and data transfer714/1, Reliability and availability714/6, Redundant stored data accessed (e.g., duplicated data, error correction coded data, or other parity-type data)707/204, Archiving or backup711/100, STORAGE ACCESSING AND CONTROL711/114, Arrayed (e.g., RAIDs)711/161, Archiving711/162BackupExaminersPrimary: Gaffin, JeffreyAssistant: Nguyen, Tan T. Attorney, Agent or FirmInternational ClassesG06F013/00H04B001/74 H04L001/22 H05K010/00 AbstractA single host adapter hardware I/O control block contains information used to specify a transfer of data from a host system to a first target device and in addition information that specifies whether the data is to be mirrored, and if so, optionally identifies a second target device on which the data is to be mirrored. After transferring the single hardware I/O control block to the host adapter integrated circuit, the host adapter integrated circuit determines whether the hardware I/O control block specifies a mirrored transaction. If a mirrored transaction is specified, the host adapter integrated circuit generates a second hardware I/O control block for the second target device using the information in the first hardware I/O control block. When the execution of both hardware I/O control blocks is complete, the host adapter integrated circuit provides a single completion notification to the host system.Other References
Field of SearchInput/Output command processMode selection Concurrent Input/Output processing and data transfer By command chaining Access request queuing Peripheral adapting Via common units and peripheral-specific units Application-specific peripheral adapting For data storage device Reliability and availability Redundant stored data accessed (e.g., duplicated data, error correction coded data, or other parity-type data) Archiving or backup STORAGE ACCESSING AND CONTROL Arrayed (e.g., RAIDs) Archiving Backup | |
