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BC4000 Series RAID Controllers User Manual
02/13/06
B ro ad c om C o r p or at i on
Page 46 Starting and Stopping Tasks Document BC4000-UM100-R
S
TARTING AND
S
TOPPING
T
ASKS
Tasks are started when you perform one of the following actions.
•
Create a redundant array
•
Transform an array
•
Copy an array
•
Restore an array
•
Check for consistency on redundant arrays
•
Verify a consistency bitmap (check_bitmap) on a redundant array
Full task control can be used on create, copy, consistency check and bitmap check tasks. On transforms and
on restores for dedicated and global spares, task control can only pause/resume, but cannot remove the task.
To remove these types of tasks, pause and then delete them.
The following types of tasks can be displayed for each array:
TRANSFORM The TRANSFORM task is displayed while an array is being
transformed.
CREATE The CREATE task is displayed while an array is being created.
COPY The COPY task is displayed while an array is being copied. In a -
-verbose query, the array numbers of the source and destination
array are given (for example, COPY 2>5).
CHECK The CHECK task is for redundant type arrays only. This task is
displayed while verifying that the parity (RAID5) or mirror drive
consistency is correct.
RESTORE The RESTORE task is displayed while an array is being
restored.
CHECK_BITMAP The CHECK_BITMAP task is displayed while verifying that the
parity on a RAID5 set, or the mirror halves on a RAID1/10 set,
are consistent. This action is performed automatically if your
system crashes.
NOT_ACTIVE NOT_ACTIVE is displayed when no other tasks are being
performed.
Caution! When a task is in progress and the system is shut down, the RAIDCore driver may hang
under certain 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 does not notify the RAIDCore driver that the
system is shutting down. If this condition occurs, the system can be reset, the OS will start, and the
RAIDCore process will also restart.