Data Matching Procedure - Hitachi HF-W2000 Instruction Manual

10. SOFTWARE RAID1
4. Execute steps 4 to 7 described in "10.4.2 (1) (a) Replacing an HDD with the computer
turned on" and rebuild the array.

10.5.4 Data matching procedure

As a result of HDD deterioration over time (or other reason), defective blocks are generated that
might cause some data to become unreadable. The possibility of failure in rebuild processing
when recovering the system from degradation can be reduced by regularly performing HDD
matching (HDD data consistency checks). Use the software RAID utility for HDD matching.
Perform HDD matching according to "10.6.5 Consistency check function".
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