Exabyte EXB-8205 Instrucciones de operaciones descargar pdf (Pagina 94)

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3.9 Handling Unit Attention Conditions

The CTS creates a Unit Attention condition for each initiator when

any of the following conditions occurs:

The CTS is reset (whether by a Bus Device Reset message, a SCSI

bus reset, or a power-on reset).

The MODE SELECT parameters are changed by an initiator other

than the one attempting to communicate with the CTS.

The unload button is pressed and the data cartridge is ejected.

A data cartridge is inserted and automatically loaded.

A data cartridge is inserted and rejected because the media is

incompatible with the CTS. (For example, a metal evaporative

tape is inserted, or a 160m tape is inserted in a non-XL CTS.)

The internal microcode (firmware) is changed.

A log parameter (counter) reaches a specified threshold value —

assuming that the Report Log Exception Condition (RLEC) bit on

the MODE SELECT Control Mode page is set to 1.

Effect of Changing Data Cartridges

After you press the unload button, the CTS returns Check Condition

status with the sense key set to Unit Attention (6h) to the first

command it receives. Then, it returns Check Condition status with the

sense key set to Not Ready (2h) to all subsequent commands that

require tape motion.

Note: If you press the unload button and a data cartridge is loaded,

the CTS will unload the tape. It then returns Check Condition

status with the sense key set to Unit Attention (6h) to the first

command it receives during the unload procedure. Finally, it

returns Check Condition status with the sense key set to Not

Ready (2h) to all subsequent commands that require tape

motion.

3-32

EXB-8205 and EXB-8505

(Standard and XL)

510503

3 Implementing CTS Operations

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Exabyte EXB-8205 Instrucciones de operaciones Pagina 94

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