User manual FREECOM AIT-SDX470

[. . . ] SDX-470V/P SDX-470V/RP 5. 25 Model Product Specification Manual Version 1. 0 Aug. NOTE: This Product Specification Manual is applicable for AIT-1 Turbo Serial ATA I/F 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. [. . . ] Setting this field to a non-existing partition will be rejected by the drive with a CHECK CONDITION status and the ILLEGAL REQUEST sense key set. Write Buffer Full Ratio and Read Buffer Empty Ratio: These fields are not supported by the drive. Setting these fields to anything other than ZERO will cause the drive to return a CHECK CONDITION status and an ILLEGAL REQUEST sense key. The drive implements an algorithm which automatically adjusts these ratios so as to maximize streaming to the Host. 7-36 SONY AIT-1 Turbo drive SDX-470V series Ver. 1. 0 MODE SENSE 7. ATAPI Packet Command Specification Write Delay Time: This field indicates the maximum time, in 100 millisecond increments, that the drive shall wait with a partially full buffer before forcing the data to tape. The drive defaults to a 10 second delay since the last bus activity before the data is flushed from the buffer to the tape. If Write Delay Time is set to ZERO the drive will wait indefinitely for the data group to be filled. BIS: Block Identifiers Supported is set to one to indicate that the media has recorded information about the logical block ID relative to the partition. The DBR and BIS bit are only valid on a MODE SENSE command where they are used to report drive capabilities. RSmk: The Report Set Mark bit, when set to one, indicates that Set Marks will be reported to the drive. AVC: Automatic Velocity Control function is not supported by the drive and if this bit is set a CHECK CONDITION status is returned with an ILLEGAL REQUEST sense key. SOCF: Stop on Consecutive File-marks function is not supported by the drive and if this bit is set a CHECK CONDITION status is returned with an ILLEGAL REQUEST sense key. If this bit is set a CHECK CONDITION status is returned with an ILLEGAL REQUEST sense key. REW: The Report Early-Warning End-of ­Media bit is set to ZERO indicates the drive will not report the earlywarning condition on reads but will report early-warning on writes at a distance of 2, 500 mm before the physical End-Of ­Partition. A value of ONE indicates that the drive will report the early-warning condition on writes and reads. Gap Size: This field is not used by the SDX-470V and shall be set to ZERO otherwise a CHECK CONDITION with an ILLEGAL REQUEST sense key will be returned. EOD Defined: This field shall always be set to ZERO so that the drive will use its default EOD definition to detect and generate EOD. Any other value will cause the drive to return a CHECK CONDITION status with an ILLEGAL REQUEST sense key set. EEG: The Enable EOD Generation bit shall always be set to indicate that drive will generate an EOD. The drive generates an EOD mark prior to any change of direction, if that change follows a write-type operation. This bit is only valid on the MODE SENSE command where it is used to report drive capabilities. SEW: The Synchronize at Early-Warning bit is set to ONE indicates buffered write data, File-marks and Set-marks at or after Early-Warning End-of-Media will be written to the Medium. [. . . ] SDX-470V automatically changes its mode to the same mode as with the cassette; it also automatically returns to the default (DDS) mode after ejecting the AIT mode cassette. 16. 4. Re-Using Cassettes Cassettes are re-initialized with the SCSI Mode Select Page 11h command. The Accumulative System Log in MIC is saved, even if the cassette is re-initialized. MIC cassettes may be re-initialized in either the DDS mode or the AIT mode. [. . . ]