Abstract: Method, system, and apparatus for executing input/output operations. The method including selecting a level of error recovery for input/output operations, receiving a request to execute the input/output operation, attempting the input/output operation, and when the input/output operation fails, performing the level of error recovery specified. The selection of the error recovery level may be done by a user, or embedded within the input/output request itself.

Abstract: The invention, in its various aspects and embodiments, includes a method for uniquely identifying a device on a SCSI bus. The method first queries the device with a first SCSI command to obtain general identification information. Next, a first set of identification information for the device is extracted from the general identification information. A second SCSI command is then determined from the first set of identification information. Next, the device is queried with the second SCSI command to obtain general device identifiers. A second set of identification information for the device is then extracted from the general device identifiers. Then, an unique identifier is formulated from the first and second sets of information.