User's Manual

DLT4000 SCSI Interface
8-82 DLT4000/DLT4500/DLT4700 Cartridge Tape Subsystem
8.4.10.5 Control Mode Page (0Ah)
The Control Mode Page allows you to determine whether the DLT4000 drive will
return Check Condition status when one of its write and read error counters reaches a
specified threshold.
Bit
7 6 5 4 3 2 1 0
0 RSVD Page Code
1 Page Length
2 RSVD RLEC
Byte 3 Queue Algorithm Modifier Reserved QErr DQue
4 EECA Reserved
RAENP UAAENP
EAENP
5 Reserved
6 (MSB)
7 Ready AEN Holdoff Period (LSB)
Figure 8-52 Control Mode Page (0Ah)
Page Code
The Page Code identifies the type of MODE SENSE page being transferred. The value
returned for the Page Code is 0Ah (Control Mode Page).
Page Length
The Page Length indicates the number of bytes in the Control Mode Page that follow
this byte. The value returned for this byte is 06h.
RLEC (Report Log Exception Condition)
The RLEC bit indicates whether the DLT4000 drive should return Check Condition
status with the sense key set to Unit Attention (6h) when one of its write and read
error counters reaches a specified threshold, as follows:
0 - Do not return Unit Attention when a threshold condition is met
1 - Return Unit Attention when a threshold condition is met
Queue Algorithm Modifier
The value returned for this field is 0.
QErr (Queue Error)
The value returned for this field is 0.
DQue (Disable Queuing)
The value returned for this field is 0.