Western Digital Technologies, Inc.

Sandisk Technologies Inc.

Puspanjali Panda

Ankit Rajani

Ramkumar Muralidharan

A host system is configured to upload data files to a cloud system and provide another layer of security to the access controls provided by the cloud system. The host system includes a communication interface for communicating with a storage device and a network interface for communicating with a the cloud system. The host system includes a processors configured to obtain a 2D barcode based on an identifier of the storage device and a network address of an authorizing device associated with an owner of the storage device. The processor is further configured to, responsive to a request to upload a data file to the cloud system, embed the 2D barcode into the data file (the 2D barcode configured to cause a client device attempting to access the data file to send an access request to the authorizing device) and transmit the data file to the cloud system.

Access control for cloud-shared files from a storage device

A storage device ensures the use of a memory device with a degraded plane or die prior to the memory device entering a read-only mode. A controller on the storage device may write host data to a meta block formed in an interleaved manner using good blocks in planes on a first memory device. A virtual space manager may monitor dies and/or planes on the first memory device, determine that remaining good blocks on a first die and/or plane are equal to a minimum block threshold, and send a notification of a pending read-only mode on the first memory device. The notification may include an option to cease to perform write operations to the meta block, backup data on the first memory device, format the first memory device at half capacity and form additional meta blocks, and continue perform host write operations on the additional meta blocks.

Read only mode handling in storage devices

Disclosed herein is a system for storing a record of operations performed on a plurality of databases in which data in each database is a duplicate of a portion of data in each other database of the plurality of databases. The system comprises a plurality of servers, each server comprising a database of the plurality of databases, and a blockchain of a first distributed ledger, the blockchain of the first distributed ledger comprising one or more records of operations performed on the database, and at least one miner. Each miner comprises a blockchain of a second distributed ledger, the blockchain of the second distributed ledger comprising a record of data indicative of one or more records stored on the first distributed ledger.

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Bengaluru, India

Puspanjali Panda