System for storing data in backup tape device
February 11, 2011. 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 ReferencesVirtual storage system and method Block counter system to monitor data transfers Multiple file transfer to streaming device Magnetic tape drive controller utilizing dual DMA controllers Block pattern detection circuitry Method and apparatus for temporarily storing multiple data records Streaming tape drive with direct block addressability High capacity tape drive transparently writes and reads large packets of blocked data between interblock gaps Hard copy printer having magnetic tape image storage Magnetic tape packet assembler/disassembler safeguards existing data with pretries during appends InventorAssigneeApplicationNo. 653777 filed on 02/11/1991US Classes:714/20Plural recovery data sets containing set interrelation data (e.g., time values or log record numbers)ExaminersPrimary: Shaw, Gareth D.Assistant: Butler, Dennis M. Attorney, Agent or FirmInternational ClassesG06F 012/00G06F 013/00 AbstractIn a distributed computer environment such as a PC local area network, a backup tape device and a tape server are used for recording data from the nodes in the network for backup purposes and for controlling the flow of data. The tape server keeps track of a list of nodes which are collecting data for backup purposes. The tape server sequentially polls each node on the list and causes blocks of data from the nodes to be multiplexed and tagged as to the node origin of each block of data and causes the multiplexed blocks to be recorded by the tape device in an interleaved format. The tape location at which the blocks are recorded on tape are sent to the nodes and recorded in the node backup database. The backup data can therefore be restored since the tape locations of the blocks are known to the nodes.Other References
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