Adaptec GDTSETUP Manual de usuario descargar pdf (Pagina 54)

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Example of an Array Drive configuration with a Hot Fix drive (press the <F2>-key to display

the following screen). The Array Drive configuration sheet, shows the active Array Drive

members including the Pool Hot Fix drive.

What happens after a drive failure ?

The controller will substitute a failed Logical Drive with a Hot Fix drive only if the Array

Drive was in the ready state before the failure, or, in other words, a Hot Fix drive can only be

activated if the corresponding Array Drive had a state of data redundancy at the moment of

failure.

1. After a short while, the controller's alarm turns on.

(Note: the alarm is activated only when the Array Drive is being accessed.)

2. The controller activates the fail operation mode. In this mode, the Array Drive remains

fully operational. The data located on the failed drive is generated by means of the re-

dundancy information stored on the other drives, without causing any decrease in per-

formance.

3. The controller starts the motor of the Hot Fix drive.

4. The controller integrates the Hot Fix drive into the Array Drive and starts to reconstruct

the data and redundancy information. The Array Drive is now in the rebuild operation

mode.

Obviously, no other hard disk may fail until all data has entirely been reconstructed on the

Hot Fix drive, because up to that moment, the system is operating without redundancy.

Notes: In some literature, Hot Fix drives are also called Hot-Spare drives.

You can add or remove Hot Fix drives also with the GDTMON utility program (see Chapter

K).

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Adaptec GDTSETUP Manual de usuario Pagina 54