Western Digital Technologies, Inc.

Sabith Ali B N

Lakshmi Sowjanya Sunkavelli

Silky Mohanty

Venkatesh Naidu Pamoti

Noor Mohamed A A

Disha Parwani

In one example, a system includes a flash memory, a Random-Access Memory (RAM), and a controller. The flash memory stores first and second initial overlays, where the first initial overlay includes a first overlay function and the second initial overlay includes a second overlay function. The controller copies the first initial overlay into the RAM based on the first overlay function being called, swaps the first initial overlay with the second initial overlay based on the second overlay function being called, and monitors functions calls between the first and second overlay functions over a monitoring period. The controller determines whether a number of the function calls is greater than a threshold value, and based at least in part on the number of function calls being greater than the threshold value, re-groups the first and second overlay functions into a new overlay, and stores the new overlay in the flash memory.

Automated overlay regrouping

A storage system erases blocks of memory prior to writing data to the blocks. Instead of erasing the blocks at the time the write operations are executed, the storage system pre-erases the blocks, which can improve performance. However, because program failure errors can occur if the blocks sit empty for a relatively-long period of time prior to programming, the storage system pre-erases the blocks upon a prediction that a host will send sequential write commands to the storage system that will use the blocks. Additionally or alternatively, the storage system can pre-erase a block upon determining that the number of write commands in a command queue in the storage system is above a threshold that represents a number of write commands needed to fill the block with data.

Growing community of inventors

Karnataka, India

Sabith Ali B N