Quantum 1200 Series DAT Autochanger Manual do Utilizador descarregar pdf (Página 86)

Chapter 4 Using Your Tape Drive

Power-On Self-Test

SDLT 600 Product Manual

Power-On Self-Test 4

The SDLT 600 tape drive system performs a Power-On Self-Test (POST)

each time the tape drive is powered on. POST normally completes in 10 to

15 seconds—when a data cartridge is not in the tape drive— when the

unit is powered on. However, if a data cartridge is in the tape drive when

the unit is powered on, POST duration is longer, depending on how

much tape in the data cartridge may be loaded in the tape drive.

While POST is running, the SDLT 600 tape drive system responds BUSY

to SCSI commands. The SDLT 600 tape drive system also responds to

various SCSI messages during POST.

During this time, if a host tries to negotiate Synchronous or Wide

transfers, the SDLT 600 tape drive system negotiates to Asynchronous or

Narrow. It may take longer than the duration of POST for the tape drive

to become ready.

Table 31

provides the sequence of operation to expect when power is

turned on. See figure 19

to help familiarize yourself with the LEDs on the

front panel.

Table 31 LED Lighting Pattern

During Power-On Self-Test

(POST)

Stage What You Observe

1 (Power

On)

All LEDs illuminate for approximately one second.

2 The LEDs flash on, then off in a progressing pattern from

left to right. Stages 1 and 2 generally complete within

approximately five seconds.

3 The right LEDs remain off, the left LED illuminates

steadily, and the middle LED flashes until POST

completes. This stage typically lasts for 5 to 10 seconds.

4 When POST is complete, the middle LED stops flashing

and remains illuminated; the left LED turns off, and right

LED remains off.

POST

Failure

If POST fails, the middle and right LEDs illuminate

steadily and the left LED flashes.

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 141 142

Sem comentários

Quantum 1200 Series DAT Autochanger Manual do Utilizador Página 86