HP Surestore 330fx Optical Drive and Library SCSI-2 Command Reference - Page 83
Vendor Unique H, Quick, Disconnect, Table 2-41
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SCSI-2 Drive Command Set Mode Select Command (15H) Table 2-41 Vendor Unique Page 21H Vendor Unique Page 21H Byte 0 1 2 3 4 5 6 7-11 7 6 5 4 3 2 1 Reserved (0) Page Code (21H) Page Length (0AH) Reserved (0) DWR Quick Rsvd (0) Disconnect Force Verify Reserved (0) S1-8 S1-7 S1-6 S1-5 S1-4 S1-3 S1-2 S2-8 S2-7 S2-6 S2-5 S2-4 S2-3 S2-2 Reserved (0) DOM Reserved (0) 0 DAIR S1-1 S2-1 FWC DAIR DWR Quick Disconnect A Direct Access Inquiry Response bit of 1 indicates the Peripheral Device Type field in the Inquiry Data indicates "Direct Access Device." A DAIR bit of 0 indicates "Optical Memory Device" in the Peripheral Device Type field in the Inquiry Data. A Disable Write Reordering bit of 1 indicates write reordering is not enabled. A DWR bit of 0 indicates write reordering is enabled. A Quick Disconnect bit of 1 enables SCSI bus disconnection before command validation on performance path commands (i.e. reads, writes). A Quick Disconnect bit of 0 disables SCSI bus disconnection before validation on performance path commands. 2-46 Chapter 2