User's Guide

Chapter 2 Emulated Medium Changer SCSI Commands
Mode Select (15h)
Quantum DX-Series Software Interface Guide 33
The PLL field indicates the length of the parameter list. The list
length should reflect the combined length of all data pages being sent
with the Mode Select command. Mode Select Data pages are
shown in
table 26, table 27, and table 28.
The format for Mode Select Vendor Unique Page 20h is shown in
table 26.
Table 26 Mode
Select Data - Vendor
Unique Page 20h
Bit/Byte 7 6 5 4 3 2 1 0
0
1
2
Reserved (00h)
3
• PS - Parameters Savable
This bit is only used with the Mode Sense command. This bit is
reserved for Mode Select command and should be set to 0.
• DLR-Drive Load Retry
This bit is ignored. It can be set to 1 or 0 for compatibility with hosts.
• SER
This bit enables Drive Serialization, which enables the reporting of
drive serial numbers in the Alternative Volume Tag (AVoltag) field
of the drive Read Element Status. The default setting is Enabled
.
• AC-Auto Clean
When this bit is set to 1, automatic drive cleaning feature is enabled
When set to 0, automatic drive cleaning is disabled. This bit is
ignored. It can be set to 0 or 1 for compatibility with hosts
PS (0) Rsvd (0) Page Code (20h)
Page Length (02h)
SER(1)
AC DLR
Reserved (00h) ADU EXB(0)
Note: This must always be set to 1. Any attempt to disable this
bit will result in a check condition (05 26 00).
Note: The normal state of automatic drive cleaning is
“disabled.”