User manual FREECOM AIT-SDX550

[. . . ] SDX-550V/P SDX-550V/RP 5. 25"Model Product Specification Manual Version 1. 0 Dec. NOTE: This Product Specification Manual is applicable for AIT-2 Turbo drive. Notice This document contains proprietary information which is protected by copyright. No part of this document may be photocopied, reproduced or translated to another language without prior written consent of Sony. The information contained in this document is subject to change without notice. [. . . ] The Append Partition Command takes effect if the current partition is the last partition. When the command is issued in the last partition, SDX-550V will automatically space to the EOD area find the bottom of the Device Area, and then create a new partition. If the command is issued in any other partition, SDX-550V will return the CHECK CONDITION status (83h/97h Current Partition is no the last partition). Table 6-43: Append Partition Page Bit Byte 0 1 2 3 4 5 6 7 8 9 PSUM 7 Reserved 6 5 4 3 2 1 0 Page Code (32h) Page Length (8) Reserved Reserved Reserved Reserved (MSB) PSUM (10h or 11h) Reserved Reserved Partition Size Descriptor Reserved Partition units (LSB) The Partition Size Unit of Measured field defines the units in which the Partition Size value selects the partition size. Code 00b 01b 10b 11b Partition units Description bytes (unit of one) kilobytes (103 bytes) Megabytes (106 bytes) 10 (PARTITION UNITS) bytes Support Not Support Not Support Optional Optional This field defines the size of the partition size descriptors when the PSUM field is set to 11b. A value of n in the PARTITION UNITS field shall define the units of the partition size descriptors as 10n bytes. PSUM Partition Units 10b 0000b: megabyte (AIT-1/2 Mode, AIT-E Turbo, AIT-1 Turbo) 11b 0111b: 107 byte (AIT-2 Turbo) If another value is set these field a CHECK CONDITION status is returned with an ILLEGAL REQUEST sense key set. Partition Size Descriptor Partition size in megabytes, in binary notation. For a Mode Sense Command, the value in this field is invalid unless the Mode Sense Command follows a successful Mode Select Command Page 32. Therefore, on power-up without a Mode Select Page 32h, the Current Page 32h Partition Size Descriptor should be set to the default value of 00 00. There is no relation between this field and the IDP bit in the parameter block of Mode Select Page 11h. 6-52 SONY AIT-2 Turbo drive SDX-550V series Ver. 1. 0 MODE SELSECT Append Partition example procedure: Start Mode Sense Page 11h Can I create one more new partition? Log Sense (Page 3Dh; PC 0016h) Go to the Last Partition Mode Select Page 32h Stop Note 2: Example 1: 6. Command Specification Check Max Additional Partitions IF (Max Additional Partitions) 1 THEN you can create a new partition. Append partition. Note 1: The partition to be appended inherits the conditions previously set by the Mode Select Page 31h. Mode Select Page 32h Append Partition Page indicates 1GB for the partition size. After the Mode Select command returns Good status we have the following: P0=2GB P1=4GB (old data)+1GB of Append space=5GB <--- new append partition P2=23GB-5GB=18GB. After this command completes Unit Attention condition will be set for other Initiators, with ASC/ASCQ set to 2A01, Mode Parameters changed. After this command Mode Sense page 11h will show the following: Additional Partition=2 P0=2GB P1=5GB P2=18GB Note 3: Example 2: This example does not contains formatting overhead. Mode Select Page 32h Append Partition Page indicates 5GB for the partition size. This command will be rejected with a CHECK CONDITION and ASC/ASCQ (83h/98h: Cannot append the new partition because the remaining capacity too short) and the tape format will not be changed. Mode Select Page 32h Append Partition Page indicates 3GB for the partition size. This command completes with Good status; however the new partition will be an empty partition. After this command completes, Unit Attention condition is set for other Initiators, with ASC/ASCQ set to 2A01, Mode Parameters changed. After this command, Mode Sense Page 11h will show the following: P0=2GB P1=20GB (old data)+3GB=23GB <--- new append partition. [. . . ] The host has limited access, and cannot perform any commands which would cause tape motion. The host can, however, load a tape, if one is inserted, and can execute any diagnostic tests which do not require tape motion. The host has access to all command operations, including those which access the tape, set configurations and run diagnostic tests. Over Length: The incorrect length condition that exists after executing a read command when the length of the actual block read exceeds the requested transfer length in the command descriptor block. [. . . ]