Alibaba ECS D2C의 HDD to QLC SSD의 전환 과정 HDD가 가지고 있던 문제들 Alibaba’s D2C instance family is equipped with high-capacity and high-throughput local SATA HDDs However, there exist two challenges in upgrading this instance family with HDDs: (1) the capacity scaling challenge and (2) the challenge in performance per terabyte (TB) 이렇게 두 가지를 언급하고 있다. In recent years, the compute (e.g. core counts) and IO i..