Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The SCSI Test Unit Ready command is used to determine if a device is ready to transfer data (read/write), i.e. if a disk has spun up, if a tape is loaded and ready etc. The device does not perform a self-test operation. See the Send Diagnostic command. In SCSI computer storage, com ...Full description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The SCSI Test Unit Ready command is used to determine if a device is ready to transfer data (read/write), i.e. if a disk has spun up, if a tape is loaded and ready etc. The device does not perform a self-test operation. See the Send Diagnostic command. In SCSI computer storage, commands are sent in a Command Descriptor Block (CDB). Each CDB can be a total of 6, 10, 12, or 16 bytes, but later versions of the SCSI standard also allow for variable-length CDBs. The CDB consists of a one byte operation code followed by some command-specific parameters.