Appendix G: Miscellaneous Notes To Ait-E Turbo, Ait-1 Turbo Contact Type Mic; Partition Numbering In The Dds Emulation Mode; Ait Log Sense; Write Protection Tab On Sdx2 Cassette - Sony AIT-SDX460 Product Specifications Manual

15. APPENDIX G: Miscellaneous Notes to AIT-E
Turbo, AIT-1 Turbo contact type MIC

15.1. Partition Numbering in the DDS Emulation Mode

In default configuration, the Sony SDX-460V emulates DDS drives. In this mode, it supports up to two partitions,
logically numbered 0 and 1, where the logical Partition 1 is the first physical partition on the tape. The physical
partition numbering is the same in either the DDS emulation or the native AIT mode: the first partition on tape is given
the physical partition number of 0. In the DDS emulation mode, the drive translates the physical partition numbering
scheme into the logical scheme that is communicated to the host. In the AIT mode, the logical partition numbers
correspond directly to the physical partition numbers. SDX-460V manages DDS Emulation transparently, and it can
be used as a large capacity and a high transfer rate DDS drive.

15.2. AIT Log Sense

The Sony SDX-460V supports the legacy Tape Log Sense Page 30h. However, the data fields for AIT-E Turbo,
AIT-1 Turbo Standard Format are longer than their counterparts defined by the DDS Standard Format. The Sony
SDX-460V supports native Tape Log Sense by way of Page 3Ch.

15.3. Write Protection Tab on SDX2 cassette

The Write Protection Tab prevents writes to MIC, except for the Accumulative System Log Information. The
Accumulative System Log Information holds the history of the System Log from the beginning of the tape use.
Therefore, the tape history statistics are maintained by the drive accurately, even if the tape is write protected. The
Accumulative System Log is created when MIC is first initialized, and it is never cleared even if the cassette is
reformatted.

15.4. Unique Serial Number in MIC

All MIC cassettes are given a unique serial number held in the MIC Header. The serial number is assigned and
written into MIC when the cartridge is assembled at the manufacturer. The unique serial number consists of 32 digits
that can support the maximum value of 99,999,999,999,999,999,999,999,999,999,999.

15.5. AIT Cassette Manufacturer ID in MIC

AIT cassette manufacturers must obtain their unique Manufacturer-ID's from the MIC Format holder (Sony
Corporation).
AIT Cassette Manufacturer ID
0 .. 9
a .. z
A .. R
S
T .. Z
SONY AIT-1Turbo drive SDX-460V series Ver.1.0
Assigned for...
Reserved
Reserved
Reserved
Sony Corporation
Reserved
15.Appendix G
15-1