Configuring Your Server 4-49Background InitializeThe Background Initialize is automatically executed when RAID5 virtual disk is created in the diskgroup composing of five or more HDDs, or RAID6 virtual disk is created in the disk groupcomposing of seven or more HDDs.The Background Initialize performs the parity generation processing in the background to the areanot initialized. The processing is equivalent to that of Consistency Check.However, the Background Initialize is not performed in the following cases. Full Initialize has already been executed and completed normally before executingBackground Initialize.(*) Full Initialize is a function to clear the entire area of a virtual disk with "0". Consistency Check has already been executed and completed normally before executingBackground Initialize. Rebuild has already been executed and completed normally before executing BackgroundInitialize (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 the virtual disk of RAID6 is partially degraded.The Background Initialize is executed again if any of the following cases occurred in the virtualdisk on which the Background Initialize has completed. When the virtual disk is degraded or offline, you execute Make Online to HDD being inoffline status, and the virtual disk becomes Optimal state. When you replace the RAID Controller with the maintenance parts and others. When you execute Reconstruction to existing virtual disk to make RAID5 VD with five ormore HDDs. When you execute Reconstruction to existing virtual disk to make RAID6 VD with sevenor more HDDs.IMPORTANT: Note the following for Background Initialize: During Background Initialize, the processing rate is decreased dueto much load. Background Initialize will resume a few minutes later even if it isinterrupted.
