Direct Attached Storage (DAS)

DAS is directly attached to a single computer, while a Storage Area Network (SAN) connects multiple servers to shared storage devices. Network Attached Storage (NAS) uses a dedicated device connected to the network to provide file-level data access. 

No, DAS (Direct-Attached Storage) is not necessarily faster than NAS (Network-Attached Storage). The speed of storage systems can vary depending on various factors such as hardware specifications, network connectivity, and the specific use case. 

The cost of DAS varies depending on the storage capacity and interface. However, it is generally more affordable than other storage solutions due to its simplicity.