MAKING TRADE-OFFS BETWEEN REBUILD SCANNING AND FAILING MEMORY DEVICE FLEXIBILITY

摘要

A dispersed storage network (DSN) includes receiving a slice access request including a slice name, identifying a sub-range of a DSN address range based on the slice name, identifying a memory device of a group of memory devices associated with the sub-range utilizing a decentralized agreement function based on the slice name, facilitating a slice access request with the identified memory device. For rebuilding a slice, a method includes detecting a storage error, identifying a sub-range of the DSN address range, facilitating rebuilding of the identified sub-range to produce rebuilt encoded data slices, updating location weights of the group of memory devices based on the detected storage error, for each rebuilt encoded data slice, identifying a corresponding memory device of the group of memory devices for storage of the rebuilt encoded data slice utilizing the decentralized agreement function and the updated location weights, and storing the rebuilt encoded data slice.