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Appendix B. Glossary
A
alien array
A partially configured array, usually created as a result of an error during the array
creation process, such as a power failure.
array
Two or more physical drives combined for increased capacity, speed, or fault
tolerance. Once created, an array is configured as one or more logical drives. The
operating system in the server recognizes a logical drive as a single drive.
auto-synchronization
Synchronization on RAID level-6, level-5, level-5E, level-50, and level-60 drives that
is automatically initiated when the logical drives are created. This type of
synchronization works in the background. ServeRAID SAS controllers (8i/8k/8k-l)
and the ServeRAID-7t controller also support auto-synchronization on RAID
level-1 and level-10 logical drives.
B
battery-backup cache
Buffer storage that protects data during write-back operations; in the event of a
power failure, it preserves the data in the controller cache.
BIOS-compatibility mapping - Extended
An option of BIOS compatibility mapping. When the BIOS compatibility mapping
is set to Extended, the ServeRAID controller BIOS is aware that the operating
system supports 8 GB or smaller physical drives.
BIOS-compatibility mapping - Limited
An option of BIOS compatibility mapping. When the BIOS compatibility mapping
is set to Limited, the ServeRAID controller BIOS is aware that the operating
system supports 2 GB or smaller physical drives. This enables the user to migrate
data from older PCI or Micro Channel adapters.
BIOS-compatibility mapping
A ServeRAID controller setting with two options: Limited and Extended. The
default value is Extended.
block
A data unit created when data is striped across physical drives.
blocked
The blocked state is reserved for RAID level-0 logical drives that are part of the
same array as one or more of the following:
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