Disk pre-copy technology

Disk pre-copy technology:
The disk pre-copy technology enables the storage system to monitor the disk status. When a member disk in a RAID group is about to fail, data on the disk is pre-copied to a hot spare disk, reducing data loss risks.

The disk status is determined by reading the attribute of the self-monitoring, analysis, and reporting technology (S.M.A.R.T.). When the disk is about to fail, the pre-copy technology enables data on the disk to be copied to and backed up on the hot spare disk. By backing up data quickly to shorten or avoid long-time reconstruction after the disk fails, the disk failure rate during reconstruction is reduced and the product security is improved.

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