What is direct-attached storage PDF?

What is direct-attached storage PDF?

Direct-Attached Storage (DAS) is an archi- tecture. where storage connects directly to servers. Applications access data from DAS using block-level access protocols. The inter- nal HDD of a host, tape libraries, and directly connected external HDD packs are some exam- ples of DAS.

What is direct-attached storage used for?

Direct-attached storage (DAS) is a type of storage that is attached directly to a computer without going through a network. The storage might be connected internally or externally. Only the host computer can access the data directly. Other devices must go through the host computer to work with the data.

Where is direct-attached storage needed?

DAS stands for Direct Attached Storage. It is a digital storage device connected directly to the server, workstation, or personal computer via the cable. In Direct Attached Storage, applications use the block-level access protocol for accessing the data.

How do I access network-attached storage?

How to Map a NAS Storage Drive on PC

  1. From your desktop, click on the start menu and search for This PC.
  2. From the This PC window, right click on This PC and select Map Network Drive.
  3. The Map Network Drive window will appear.

What are the advantages of DAS?

The main advantages of DAS is that it is high-performance, simpler to setup and configure, and typically lower-cost when compared to SAN storage. The disadvantage is that it cannot be managed over a network, and may not have the same level of redundancy as a NAS or SAN. It is a special purpose device.

What are the benefits of DAS?

DAS advantages include:

  • High availability.
  • High access rate due to Storage Area Network (SAN) absence.
  • Elimination of network setup complications.
  • Storage capacity expansion.
  • Data security and fault tolerance.

What are the limitations of DAS?


  • The major disadvantages of DAS are its distance restriction, high network overhead, and limited scalability.
  • SCSI device connections cannot typically exceed 12 meters, which means data storage is usually confined to a single room, or even within a single system enclosure.