Which of the following has the lowest latency?

Solid State Drives (SSDs) use NAND flash memory for data storage, enabling instantaneous data access without mechanical delays like seeking or spinning, resulting in significantly lower latency compared to other storage types.

NAS (Network Attached Storage) introduces network latency in addition to the storage device's own access time, making it higher than a local SSD.

Blu-Ray is an optical disc format that relies on mechanical movement of a laser and disc rotation, which introduces significant latency compared to an SSD.

DVD is an optical disc format, similar to Blu-Ray, and its mechanical nature results in higher latency than an SSD.