The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2005
Filed:
Mar. 15, 2001
James P. Allen, Austin, TX (US);
Marcus Bryan Grande, Pflugerville, TX (US);
Madhuranath Narasipur Krishna Iyengar, Austin, TX (US);
Robert George Kovacs, Austin, TX (US);
John Leslie Neemidge, Round Rock, TX (US);
Marshon Larapheal Robinson, Austin, TX (US);
James P. Allen, Austin, TX (US);
Marcus Bryan Grande, Pflugerville, TX (US);
Madhuranath Narasipur Krishna Iyengar, Austin, TX (US);
Robert George Kovacs, Austin, TX (US);
John Leslie Neemidge, Round Rock, TX (US);
Marshon Larapheal Robinson, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
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.