Quantum sdlt 220 Guía Del Usuario
CHAPTER 5: Using Your Tape Drive
SDLT 220 and SDLT 320 Product Manual
5-2
March 2004
81-85002-01
5.1
Power On Self Test
When power is applied to the tape system, the system performs a Power On Self
Test (POST). POST completes in approximately ten seconds. While POST is
running, the tape system responds BUSY to SCSI commands. The tape system
also responds to various SCSI messages during POST.
Test (POST). POST completes in approximately ten seconds. While POST is
running, the tape system responds BUSY to SCSI commands. The tape system
also responds to various SCSI messages during POST.
During this time, if a host tries to negotiate Synchronous or Wide transfers, the
tape system will negotiate to Asynchronous or Narrow. It may take longer than the
duration of POST for the drive to become ready.
tape system will negotiate to Asynchronous or Narrow. It may take longer than the
duration of POST for the drive to become ready.
Table 5-1.
Indicator Pattern During POST
Stage
What Can Be Observed
1
The LEDs light in a progressing pattern from left to right.
2
The red and yellow LEDs are extinguished and the green LED
flashes until POST completes.
flashes until POST completes.
3
If POST fails, the green and yellow LED will illuminate
steadily and the red LED will blink.
steadily and the red LED will blink.