Implementing enhanced buffer management for data storage devices

A method, apparatus and a data storage device for implementing enhanced buffer management for storage devices. An amount of emergency power for the storage device is used to determine a time period for the storage device between emergency power loss and actual shut down of electronics. A time period for the storage device for storing write cache data to non-volatile storage is used to identify the amount of write cache data that can be safely written from the write cache to non-volatile memory after an emergency power loss, and using the write cache threshold for selected buffer management techniques for providing enhanced storage device performance, including enhanced SSD or HDD performance.