SAN (Storage Area Network) and DAS (Direct Attached Storage) are two different approaches to storage in a server network.
SAN is a specialized high-speed network that connects multiple servers to centralized storage devices such as disk arrays, tape libraries, and optical jukeboxes. SAN enables block-level access to data storage, which makes it ideal for high-performance applications and workloads that require shared access to large amounts of data.
DAS, on the other hand, is a storage architecture where the storage devices are directly attached to individual servers, providing direct access to the data. This approach is suitable for applications and workloads that do not require shared access to data, such as small-scale file and print serving.
"SAN/DAS workloads" refers to the type of workload or application that is being run on a server network, and whether it is best suited for a SAN or DAS storage architecture. For example, a high-performance database application that requires shared access to large amounts of data would be a SAN workload, while a small-scale file server application would be a DAS workload.