Direct-attached storage (DAS) refers to a type of data storage that is directly connected to a computer or server without any network in between. This can include hard drives, solid-state drives, or external storage devices that plug into a computer via USB, SATA, or other interfaces. DAS is often used for personal computers and small servers, providing quick access to data. One of the main advantages of DAS is its simplicity and speed, as it allows for fast data transfer rates. However, it lacks the scalability and sharing capabilities of networked storage solutions like network-attached storage (NAS) or storage area networks (SAN), making it less suitable for larger organizations.