Sandisk Technologies Inc.

Aki Bleyer

Shay Benisty

Yehuda Hahn

Alexander Bazarsky

Ariel Navon

Julian Vlaiko

Rotem Sela

Alexander Lemberg

Orel Kahlon

Roi Jazcilevich

Nisiel Cohen

Systems, methods, and data storage devices for secured failover access through data storage device side channels are described. Storage devices may include a storage interface and one or more side channels, such as control bus and debug bus interfaces. The different interfaces may use different interface protocols and physical interface connections configured for different types of commands to the data storage device. When a failure of the storage interface occurs, the data storage device may receive a failover message through one or more side channels to reconfigure the side channel interface to receive, execute, and return a response for host storage commands targeting host data on the storage medium.

Secured failover access through data storage device side channels

Instead of incorporating a single interface towards the host for transferring data, utilizing a designated write-only storage logging device. The write-only storage logging device can accept sequential streams and automatically overwrite. The controller will read the log material in a secure manner using a different and separate physical connection than the one used for write. The storage device may have LBA ranges that work as write-only as well as other LBA ranges, which are normal (both reads and writes are enabled). Both options will allow for a traditional file system as well as sharing the storage, but will still protect the log areas that would be used for events that should not be read out.

Read-protected storage device with sequential logging

A data storage device and method for accident-mode storage of vehicle information are disclosed. In one embodiment, a data storage device is provided comprising a memory and one or more processors. The memory comprises single-level cell (SLC) memory and multi-level cell (MLC) memory. The one or more processors, individually or in combination, are configured to: receive a command from a vehicle to enter accident mode; and in response to receiving the command from the vehicle to enter accident mode, relocate vehicle information stored in the MLC memory to the SLC memory. Other embodiments are disclosed.

Data storage device and method for accident-mode storage of vehicle information

The present disclosure generally relates to recognizing a violation of an expected write amplification (WAF) rate and informing a host device of the violation so that the host device may take corrective action and ensure the data storage device does not reach end of life (EOL) earlier than expected. The host can provide the data storage device with an expected lifetime and may additionally provide a benchmark WAF rate. The data storage device compares the actual WAF rate to the benchmark WAF rate and notifies the host device of any violation where the actual WAF rate exceeds the benchmark WAF rate.

Recognition and report of expected write amplification violation

Growing community of inventors

Givatayim, Israel

Aki Bleyer