Advantech DNS-3200 Working with Spares, About Sparing Options, Dedicated Distributed Global

Note: When a task is in progress and the system is shut down, the RAID driver may hang under cer- tain circumstances. This may occur if arrays exist and a task is in progress, but a drive letter has not been assigned AND an OS partition has not been created on the array. Because neither a drive letter nor partition has been assigned, the OS doesn’t notify the RAID driver that the system is shutting down. If this condition occurs, the sys- tem can be reset, the OS will start, and the RAID process will also restart.

4.4 Working with Spares

4.4.1 About Sparing Options

The DNS-3200 Series RAID controller supports three sparing options:

•Distributed A patent-pending sparing option comprised of reserved space on each disk in an array

•Dedicated A spare disk assigned to a specific, redundant array

•Global A spare disk that is shared by multiple arrays

Spares are restored in the following order:

•Dedicated

•Distributed

•Global

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