Operating in a write through mode transition while maintaining data integrity after an abrupt shutdown on a storage device

Abstract

A storage device may transition from operating in a write-back mode to a write-through mode and may use a transition mode to maintain data integrity on a boot-up. The storage device includes a volatile memory to store acknowledged host data and a persistent memory to store the host data; The storage device may operate in a write-back mode and flush the acknowledged host data in the volatile memory to the persistent memory when a capacitor power is greater than a threshold. The storage device may operate in a write-through transition mode, flush the acknowledged host data in the volatile memory to the persistent memory when the capacitor power is less than the threshold and move to the write-through mode when the acknowledged host data is copied to the persistent memory.