User manual SEAGATE MEDALIST 2160WC

[. . . ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Medalist Pro Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Medalist Pro Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A, December 1996 Seagate, Seagate Technology, the Seagate logo and Medalist are registered trademarks of Seagate Technology, Inc. [. . . ] The valid values for this field are 000 for logical block address format or 101 for physical sector address format. If the drive does not support the requested format it terminates the Send Diagnostic command with a Check Condition status. The sense key is set to Illegal Request and an additional sense code is set to Invalid Field in the Parameter List. The Translate Format field specifies the format to which the initiator wants the address to be translated. The valid values for this field are 000 for logical block address format or 101 for physical sector address format. The Translate Format field must be different than the Supplied Format field. If the drive does not support the requested format it terminates the command with a Check Condition status. The sense key is set to Illegal Request and an additional sense code is set to Invalid Field in Parameter List. The Address to Translate field contains a single address that the initiator is requesting the drive to translate. The format of this field is defined by the Supplied Format field. For systems that support disconnection, the drive disconnects while executing this command. 3. 6. 1 Read Capacity command (25H) The initiator uses the Read Capacity command to determine the capacity of the drive. When the drive receives the Read Capacity command, it sends the initiator read capacity data, which is described in Section 3. 6. 1. 1. Bytes 0 1 2­5 6 7 8 9 0 0 0 0 0 0 0 0 Bits 7 0 6 0 LUN 0 0 0 0 5 1 4 0 0 0 0 0 0 3 0 0 0 0 0 0 2 1 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 PMI 0 Logical block address 64 Bytes 2­5 Medalist Pro 2160N/2160WC Product Manual, Rev. A The logical block address specified in the CDB cannot be greater than the logical block address reported by the drive in the read capacity data else check condition. If the partial medium indicator (PMI) bit is zero, the logical block address in the CDB is also zero. The read capacity data returned by the drive contains the logical block address and block length of the last logical block of the drive. If the PMI bit is 1, the drive returns the read capacity data, which contains the logical block address and block length of the last logical block address, after which a substantial delay (approximately 1 msec) in data transfer occurs. This logical block address must be greater than or equal to the logical block address specified in the CDB. This reported logical block address is a track (head) boundary. Byte 8 3. 6. 1. 1 Read Capacity data The Read Capacity data is shown below. Bytes 0­3 4­7 Bytes 0­3 Bits 7 6 5 4 3 2 1 0 Logical block address Block length (00000200H) The logical block address is determined by the PMI bit in the CDB of the Read Capacity command. The block length is always 512. Bytes 4­7 3. 6. 2 Read (10) command (28H) When the drive receives the Read (10) command, it transfers data to the initiator. This command is the same as the Read (6) command discussed in Section 3. 4. 6 on page 45 except that in the CDB for the Read (10) command, a 4-byte logical block address and a 2-byte transfer length can be specified. If there is a reservation access conflict, this command terminates with a reservation conflict status and no data is read. [. . . ] The peripheral device type field contains zero, which means that the drive is a direct-access device. Byte 1 The page code field contains the same value contained in the page code field in byte 2 of the Inquiry command descriptor block. If the page code field contains any of the page codes shown in the table below, the drive returns the corresponding page. The available page codes are: Page code 00H 80H 81H C0H C1H C2H Byte 2 Reserved Byte 3 The page length field contains the length of the supported page list. [. . . ]