Huawei's OceanStor Pacific series storage system is designed to implement a proprietary fast switching retry feature, namely the Fastfail feature, to ensure that the sub-healthy I/O latency of a…

Huawei's OceanStor Pacific series storage system is designed to implement a proprietary fast switching retry feature, namely the Fastfail feature, to ensure that the sub-healthy I/O latency of a single point is controllable. This is mainly achieved through two mechanisms: I/O average latency detection and switching retry.