Patent ID: 9632891
Date: 2017-04-25
CPC Classifications: G06F

Claim:
1. A method, comprising: segmenting a first memory unit, a second memory unit, and a third memory unit of a memory unit group into a plurality of zone segments; associating the plurality of zone segments with a dedicated spare memory unit assigned to the memory unit group; retaining, in the dedicated spare memory unit, a first failed zone segment of the first memory unit having failed and a second failed zone segment of the second memory unit having failed; reconstructing, in the dedicated spare memory unit, a third zone segment of the third memory unit; promoting the dedicated spare memory unit as a first replacement memory unit for the first memory unit; assigning a spare memory unit as a second replacement memory unit for the second memory unit; and copying the second failed zone segment of the second memory unit from the first replacement memory unit to the second replacement memory unit.