Western Digital Technologies, Inc.

Sandisk Technologies Inc.

David Haliva

Gadi Vishne

Karin Inbar

Israel Zimmerman

Michal Silbermintz

Joshua Lehmann

Mor Brosh

Eli Ben-Gigi

A data storage device includes a non-volatile memory (NVM) device and a controller coupled to the NVM device. The controller is configured to create a bad block table that tracks bad blocks of the NVM device, send the bad block table to a host memory location, and check the bad block table to determine whether a block to be read or written to is bad. The controller is further configured to request information on a bad block from the bad block table located in the host memory location, determine that the requested information is not available from the host memory location, and retrieve the requested information from a location separate from the host memory location. A sum of the times to generate a request to check the flat relink table, execute the request, and retrieve the requested information is less than a time to process a host command.

Method to use flat relink table in HMB

A storage system and method for using memory allocated in a host for read data as a host memory buffer are provided. In one embodiment, a controller of a storage system receives a read request from a host for data stored in the memory, wherein the read request identifies a storage location in the host that is allocated by the host to store the requested data after it is received from the storage system. Prior to sending the requested data to the host, the storage system uses the allocated storage location in the host as a host memory buffer to store other data until the host needs the allocated storage location to store the requested data. Other embodiments are provided.

Storage system and method for using memory allocated in a host for read data as a host memory buffer

The disclosure relates in some aspects to reporting the amount of available physical storage space of a non-volatile memory (NVM) array. A device including an NVM array may send reports regarding the amount of available physical storage space in the non-volatile memory device to a host device or some other suitable apparatus. The amount of available physical storage space takes into account whether any of the physical address blocks of the NVM array have been designated as worn-out. The host device (or other suitable apparatus) may send a report to a user when the amount of available physical storage space is relatively low.

Reporting available physical storage space of non-volatile memory array

A data storage device includes a memory and a controller coupled to the memory. The memory is configured to store first data and second data. The controller is configured to unlock the first data using a first key, to unlock the second data using a second key, and to determine that the second data is indicated as being uncorrectable in response to unlocking the second data using the second key.

Growing community of inventors

Kfar Saba, Israel

David Haliva