Quantum DLT 2500, Product Manual

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DLT2000 SCSI Interface
8-78 DLT2000/DLT2700 Cartridge Tape Subsystem
8.4.10.3 Control Mode Page (0Ah)
The Control Mode Page allows you to determine whether the DLT2000 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 Length
RSVD RLEC
Byte Queue Algorithm Modifier QErr
EECA Reserved RAENP UAAENP
Reserved
Ready AEN Holdoff Period
Page Code
1
DQue
(MSB)
Reserved
2
EAENP
3
(LSB)
4
5
6
7
Figure 8-50 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 DLT2000 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.