4 working with spares, 1 about sparing options, Working with spares – Advantech DNS-3200 User Manual
Page 63: About sparing options
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Chapter 4
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
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.