User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Mode Select (6 /10) (15h / 55h)
172 Quantum DX-Series Software Interface Guide
Mode Select (6 /10) (15h / 55h) 3
The MODE SELECT command (available in either 6- or 10-byte format)
enables the host to configure the tape drive. Implementing MODE
SELECT and MODE SENSE requires “handshaking” between the host
and the drive. Before configuring the drive, the host should issue a
MODE SENSE command to the drive to obtain a report of the current
configuration and determine what parameters are configurable. The host
interprets this information and then may issue MODE SELECT to set the
drive to the host’s preferred configuration. The Mode Parameter List is
passed from the initiator to the drive during the command’s DATA OUT
phase.
Information for the drive is carried on a number of pages, each of which
serves to set the tape drive’s operating parameters. The MODE SELECT
pages supported, and the sections of this manual that details each page,
are:
Page
Code
Description
01h READ/WRITE Error Recovery
Page
02h Disconnect / Reconnect Page
0Ah Control Mode Page
0Fh Data Compression Page
10h Device Configuration Page
11h Medium Partition Page
1Ch Tape Alert Page
3Eh EEPROM Vendor Unique Page
Tech Tip: All page information is accepted, but not acted on
with the exception of the RLEC bit and block length
in the DX-Series system.
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