Electrical computers and digital data processing systems: input/ – Input/output data processing – Data transfer specifying
Reexamination Certificate
2005-05-17
2005-05-17
Gaffin, Jeffrey (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Data transfer specifying
C710S003000, C710S008000
Reexamination Certificate
active
06895453
ABSTRACT:
In traditional Fiber Channel systems, remote devices connected to the Fiber Channel network using a bridge or included in a storage enclosure are not tracked. If a remote device, such as a SCSI disk device, is removed or swapped, data errors such as data corruption can result. A device identifier corresponding to the remote device is obtained from the remote device. The device identifier may include the remote device's serial number and other identifying information pertaining to the device. The first time the remote device is used, the device identifier is obtained and stored by the Fiber Channel device using the remote device. This device identifier is compared with subsequently obtained identifiers. If the identifiers match, communication with the remote device occurs. However, if the identifiers do not match, an error condition is raised indicating that the remote device has been removed or swapped.
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“SCS1-3 Primary Commands,”Draft ANSI Standard X3.301-199x, Mar. 28, 1997, p. 32-39, 123-30.
Allen James P.
Grande Marcus Bryan
Iyengar Madhuranath Narasipur Krishna
Kovacs Robert George
Neemidge John Leslie
Chen Alan
Gaffin Jeffrey
Leeuwen Joseph T. Van
Roberts Diana L.
Van Leeuwen & Van Leeuwen
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