Q. What is direct attached storage (DAS)?

A.
Direct Attached Storage (DAS) is a device that connects directly to the server or computer that you are backing up from. If you are backing up from a different computer from the DAS attached computer, you cannot access the DAS. In this case both computers would need their own DAS.

A common misconception is that you cannot backup LAN computers when using a DAS device. This is possible and very common.  You can backup any LAN computer just as long as the data is being pulled onto the computer where the backup client is running from.

A DAS device cannot be accessed from LAN computers, so the backup client on the local machine must be pulling the data (as opposed to the data being pushed by the LAN computers).

DAS is different from network attached storage (NAS) and storage area networks (SAN).

DAS can be a tape backup device, a USB external drive that is not mapped, or any other device that is not accessible on the network. 


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