Roberts Mlotkowski Safran Cole & Calderon P.C.
Adapting transfer rate of cached data to prevent stoppage of data transmission
A file system to controls access to a tape library that selectively loads and unloads a plurality of cartridges from a plurality of slots to a drive for transmitting to the file system archived data retrieved from a particular cartridge. The file system includes a cache and receives a request from a requestor to access the tape library, estimates a first data transfer rate from an anticipated tape library operation completion duration and from a capacity of cached data to be transmitted from the cache to the requestor, initiates access to the tape library, and adapts the first data transfer rate to a second data transfer rate to transmit the capacity of the cached data to the requestor throughout the anticipated tape library operation completion duration.
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inventional additional inventional inventional additional
Shinsuke Tohru Terue Takashi Hiroshi
Mitsuma Hasegawa Watanabe Ashida Itagaki