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Background Initialize
The Background Initialize is automatically executed when a RAID5 virtual disk is created in the disk group composed
of five or more HDDs, or when a RAID6 virtual disk is created in a disk group composed of seven or more HDDs.
The Background Initialize performs the parity generation processing in the background of the area not initialized. This
process is equivalent to the Consistency Check process.
However, the Background Initialize is not performed in the following cases.
Full Initialize has already been executed and has completed normally before executing Background Initialize.
(*) Full Initialize is a function that clears the entire area of a virtual disk with "0".
Consistency Check has already been executed and completed normally before executing Background
Initialize.
Rebuild has already been executed and has completed normally before executing Background Initialize (for
RAID5 only).
"Yes" is specified for "Disable BGI" in VD Definition.
Virtual disk is in degraded or offline state.
Background Initialize is performed if a RAID6 virtual disk is partially degraded.
The Background Initialize is executed again if any of the following cases occurred in the virtual disk on which the
Background Initialize has completed.
When the virtual disk is degraded or offline, you execute Make Online to the HDD being in offline status, and
the virtual disk state becomes Optimal.
When you replace the RAID Controller with a maintenance parts or another.
When you execute Reconstruction to an existing virtual disk to make a RAID5 VD with five or more HDDs.
When you execute Reconstruction to an existing virtual disk to make a RAID6 VD with seven or more HDDs.
IMPORTANT:
During the Background Initialize, the processing rate is decreased due to the high load.
Background Initialize will resume a few minutes later even if it is interrupted.
Note the following for Background Initialize:
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