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ACOS only supports SSD and HDD disks.
An SSD (Solid-State Drive) disk uses solid-state electronic storage chips as storage media, which convert data into binary files and store them on integrated circuits. An SSD has the benefits of fast reading and writing, light weight, low energy consumption and small size. According to the interface type, SSD disks can be divided into NVMe SSDs, SATA SSDs and SAS SSDs.
NVMe SSD: An NVMe SSD disk adopts a non-volatile high-speed interface protocol and are directly connected to CPU through the PCIe bus, which simplifies data transmission path, reduces latency, and optimizes performance.
SATA SSD and SAS SSD: A SATA SSD or SAS SSD disk adopts serial interface protocols to achieve less hardware overhead and higher transfer speeds.
An HDD (Hard Disk Drive) disk is a mechanical hard disk, consisting of one or more aluminum or glass rotating magnetic disks. It relies on the magnetic head to write data to or read data from the disk as the disk rotates. It has the benefits of large storage capacity, low cost, and easy data recovery.