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14. Appendix G
14.13. UN-READABLE MIC
If MIC is un-readable even though the SysLogAlive-bit on tape indicate 11B, SDX-700C reports ASC/ASCQ
(83h/87h) instead of Unit Attention/ Media Change. In such case, SDX-700C will treat the SDX MIC media as a
write-protected media.
You can check MIC availability by using Mode Sense Page 31h (MIC bit).
If MIC becomes readable during re-initialization of the tape (and no logical collapses in MIC Header information while
the re-initializing stage , the cassette will be formatted as a MIC media.
14.14. WRITE PROTECTION TAB
DDS mode with a MIC cassette: While the write protection tab is in the SAFE position, SDX-700C will update the
Accumulative System Log only. The drive will reject Log Select commands for MIC.
AIT mode with a MIC cassette: While the write protection tab is in the SAFE position, SDX-700C will update all
System Logs and the Accumulative System Log. User may update the User Volume Note and User Partition Notes,
even if the WP-TAB is the SAFE position.
14.15. LOADING/UNLOADING
The AIT cassette; 3 partitioned, Ejected cassette. The Position Information is recorded in MIC as follows.
Eject Status:
AFN = Maximum AFN for P1 plus something
Partition-ID = 2
Group-count = a
Record-count = b
Save-set-mark-count = c
File-mark-count = d
Reel Diameter:
S_reel_int_part = e
S_reel_frac_part = f
T_reel_int_part = g
T_reel_frac_part = h
SDX-700C reads the tape after loading and retrieves the Partition-ID from the tape comparing it with the Partition ID
obtained from the Eject Status. If the id's are the same and the Area ID on tape is ODA, then SDX-700C concludes
that the loading was successful and it clears the Position Information in MIC.
14-20
SONY AIT-3 drive SDX-700 series Ver.2.1
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Troubleshooting
