Direct-attached storage or (DAS) is storage which is directly attached to the device accessing data from it, Opposed to storage accessed over a computer network or shared Network of devices. These are common types of storage products which are external boxes/enclosures which house inside hard drives, solid-state drives (SSD), optical disc drives, the storage range from a simple Single HDD/SSD to devices which hold multiple storage devices.
The IEEE 1394 interface is a serial bus interface standard for high-speed communications and isochronous real-time data transfer, frequently used by personal computers, as well as in digital audio and digital video.
External SSDs are ideal for users looking for lightweight, portable and speedy storage. Their pocket-friendly enclosures are significantly smaller and lighter than external hard drives, and with no moving parts they're also silent, more robust and less prone to physical shock damage. They use the USB 3 interface, which is 10 times faster than and backwards compatible with USB 2.