NEC Express5800/120Bb-6 Guia do Utilizador descarregar pdf (Página 141)

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3. Maintenance

The disk array controller supports the following maintenance features:

 Configuration on Disk (COD)

 Rebuild

 Critical boot

3-1 Configuration on Disk (COD) Feature

The COD feature writes the configuration information on a HDD. The feature prevents the configuration

information from being lost if the disk array controller is defected and replaced. After the disk array controller

is replaced, the COD feature can read the configuration information from the HDD to operate the controller

normally.

Check

The disk array controller does not save the configuration information itself.

Instead, it writes and saves the configuration information on the HDD.

3-2 Rebuild Feature

When a HDD fails, the rebuild feature recovers the data on the failed HDD. The feature is available for

redundant logical drives in RAID1.

See "Chapter 3 Features of Disk Array Controller" for details.

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NEC Express5800/120Bb-6 Guia do Utilizador Página 141