Direct Attached Storage (DAS)

Direct Attached Storage (DAS) refers to a digital storage system directly attached to the server(s) or workstation(s) without a network connecting them. DAS system is typically made of data storage devices like enclosures carrying a number of hard drives connected directly to a Host Bus Adapter (HBA), which in previous decades used in the Small Computer System Interface (SCSI) while currently, Lenovo uses more eSATA, SAS or Fiber Channel. To make it clear, the difference between (DAS) and computers is the same as between NAS (Network Attached Storage) and DAS; there is no network-like switch, router, or HUB. 

Affordable, flexible, high-density storage expansion for server platforms. Start with one enclosure and grow to four. Direct-attach to multiple hosts. 

DAS storage unit. Start with one JBOD, and daisy-chain up to eight per HBA. Mix-and-match high-performance and high-capacity HDDs & SSDs as needed. Redundant, NEBS compliant. 

DAS storage unit. Start with one JBOD, and daisy-chain up to eight per HBA. Mix-and-match high-performance and high-capacity HDDs and SSDs as needed. Redundant, NEBS compliant.