Hello, everyone!
Following is the share about smart disk enclosure of Dorado V6.
Data Reconstruction of a Traditional Disk Enclosure
RAID 6 (21+2) is used as an example. If disk D1 is faulty, the controller must read D2 to D21 and P, and then recalculates D1. A total of 21 data blocks must be read from disks. The read operations and data reconstruction consume great CPU resources.
Data Reconstruction of a Smart Disk Enclosure
The smart disk enclosure receives the reconstruction request and reads data locally to calculate the parity data. Then, it only needs to transmit the parity data to the controller. In the figure on the right, only four blocks of parity data need to be transmitted between the controller and the smart disk enclosure, saving network bandwidth by 5.25 folds.
That's all, thanks!
