Sandisk Technologies Inc.

Western Digital Technologies, Inc.

Rohit Prasad

Dattatreya B Nayak

Vinod Sasidharan

Ronak Jain

Ramanathan Muthiah

A data storage device includes interfaces for coupling the data storage device to a host system and a server system. The data storage device also includes a device memory for storing or providing data. The data storage device also includes a controller comprising a storage subsystem and a security subsystem. The storage subsystem is configured to receive a host command, receive a probe request for an exception state, generate and transmit, to the security subsystem, a report for the exception state. In response to receiving an update from the security subsystem, the storage subsystem restarts at least a portion of the controller. The security subsystem is configured to monitor and transmit a probe request to the storage subsystem, transmit the report to the server system, receive the update from the server system, and transmit the update to the storage subsystem. Methods and systems are also disclosed.

Handling data storage device failure using remote system

A data storage device and method for host-determined proactive block clearance are provided. In one embodiment, a data storage device is provided comprising a memory and a controller. The controller is configured to receive a command from a host that specifies a parameter of an upcoming burst mode; and in response to receiving the command, proactively perform a garbage collection operation according to the parameter to create available storage space in the memory to store data from the host during the upcoming burst mode. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Data storage device and method for responding to a host-specified parameter of an upcoming burst mode

A data storage device includes a host interface for coupling the data storage device to a host system. The data storage device also includes a device memory for storing or providing data in response to commands receive from the host system. The data storage device also includes a controller comprising a storage subsystem and a security subsystem. The storage subsystem is configured to receive a host command from the host interface, and process the host command for the device memory. The security subsystem includes a device recovery circuit configured to monitor the storage subsystem for an exception state, and reinitialize pending operations for the storage subsystem after the exception state. Methods and systems are also disclosed.

Exception handling using security subsystem in storage device

A data storage device and method for progressive fading for video surveillance systems are provided. In one embodiment, a data storage device is provided comprising a memory and a controller. The controller is configured to store a plurality of digital video frames in the memory over time; and create free space in the memory by deleting some of the plurality of digital video frames across a plurality of subsets of digital video frames, wherein fewer digital video frames are deleted from a subset stored more recently in time than from a subset stored less recently in time. Other embodiments are provided.

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Karnataka, India

Rohit Prasad