What is the fastest secondary storage?

The fastest secondary storage technology currently available is Solid State Drive (SSD) utilizing NVMe (Non-Volatile Memory Express) protocol. Unlike traditional hard disk drives (HDDs), SSDs have no moving parts and leverage flash memory, resulting in significantly lower latency and higher data transfer rates. NVMe SSDs can achieve read and write speeds that are several times faster than SATA SSDs and HDDs, making them ideal for high-performance computing tasks.