Health Center - Accusys ExaSAN User Manual

To ensure the accuracy of the RAID parity data, ExaSAN RAID controller offers Background
checking and "Rebuild parity data". During checking or rebuilding parity, the performance of the
array will be affected. You may check the progress of in the Main view or in the Health Center.
Follow the steps below to select an array to verify, rebuild, or condition.
1. Select the Array to verify, rebuild, or condition.
2. Click the radio button to:
Rebuild the parity data – Rebuilding parity on an array uses the data on the array to create
new parity data, no repair problems with the data.
Verify the parity data – Verify that the data is free of errors.
Refresh array data and parity – Select the priority between Low, Med., or High. This
process scans, rewrites, and scrubs bad data conditions caused by excessive vibration
during drive I/Os, or data degradation caused by Adjacent Track Interference (ATI).
3. Click OK to start the operation.
4. The main array information screen will indicate that the array is undergoing rebuilding,
verification, or refreshing.
User Guide

4.1.7.6 Health Center

5. RAID