Direct Attached Storage
A typical Direct Attached Storage (DAS) system is made of a data storage device (for example enclosures holding a number of hard disk drives connected directly to a computer through a host bus adapter (HBA). Between those two points there is no network device (like a switch or router).
The main protocols used for DAS connections are ATA, SATA, eSATA, SCSI, SAS, USB, USB 3.0, IEEE 1394 and Fibre Channel.
Cisco UCS Manager allows you to have DAS with without the need for a SAN switch to push the zoning configuration.
The DAS configuration described assumes that the physical cables are already connected between the storage array ports and the Fabric Interconnects.