Western Digital Technologies, Inc.

Sandisk Technologies Inc.

Micha Yonin

Yehuda Hahn

Alexander Bazarsky

Ariel Navon

Omer Fainzilber

Lola Grin

Itay Busnach

David Gur

Lior Bublil

A data storage device and method for dynamic controller memory buffer allocation are disclosed. In one embodiment, a data storage device is provided comprising a memory and a controller with a controller memory buffer. The controller is configured to communicate with the non-volatile memory and is further configured to configure a size of the controller memory buffer; receive a request from the host to modify the size of the controller memory buffer during operation of the data storage device; and determine whether to grant the request to modify the size of the controller memory buffer. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Data storage device and method for dynamic controller memory buffer allocation

A system and apparatus for secure NVM format by pre-erase is disclosed. According to certain embodiments when an NVM does into idle mode, one or more free blocks are serially popped from a free block heap. The free block is then physically erased in an SLC mode, and then pushed to a pre-erase heap. The process is performed in both SLC and TLC partitions, in the TLC partition the block becomes hybrid SLC (HSLC). This process increases a program erase count (PEC) value of the block, maintaining device longevity. When there is a need to use a new block, it is popped from the pre-erase heap. In some cases where there is a need to use a TLC block instead of an HSLC block, an erase operation is used that converts the block from HSLC to TLC, and does not increase a PEC value for the block.

Reduce command latency using block pre-erase

A storage system and method for predictive block allocation for efficient garbage collection are provided. One method involves determining whether a memory in a storage system is being used in a first usage scenario or a second usage scenario; in response to determining that the memory is being used in the first usage scenario, using a first block allocation method; and in response to determining that the memory is being used in the second usage scenario, using a second block allocation method, wherein the first block allocation method allocates blocks that are closer to needing garbage collection than the second block allocation method.

Storage system and method for predictive block allocation for efficient garbage collection

Growing community of inventors

Nes Tziona, Israel

Micha Yonin