Types Of Direct Attached Storage

A storage area network san or storage network is a computer network which provides access to consolidated block level data storage sans are primarily used to access storage devices such as disk arrays and tape libraries from servers so that the devices appear to the operating system as direct attached storage a san typically is a dedicated network of storage devices not accessible through. And in this article we will know little more about direct attached storage and its type. Network attached storage examples of das include hard drives solid state drives optical disc drives and storage on external drives the name das is a retronym to contrast with storage area network san and network attached storage.

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Direct attached storage das refers to a digital storage system directly attached to a server or workstation without a network in between a typical 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 which in the past used to be scsi but these days more often esata sas or.

Types of direct attached storage.

Direct attached storage das is a dedicated digital storage device attached directly to a server or pc via a cable. This type of storage is anything that is directly attached to your server or computer i e. In the early days of computing das was the only type of storage available. Some of the examples of direct attached storage das are tape libraries directly connected.

In fact the term direct attached storage didn t come into use until much later when people needed a way to differentiate between traditional storage and san and nas devices. Nas network attached storage offers file level storage for end users that are connected to a. There is no connection through ethernet or fc switches that connect network attached storage devices and storage area networks san s. Other types of storage such as optical devices and tape are technically das as they are directly attached to a system.

A direct attached storage device is not networked. The type of storage most people are familiar with is das direct attached storage. Advanced technology attachment ata serial advanced technology attachment sata esata small computer system interface scsi serial attached scsi sas and fibre channel are the main protocols used for das connections. Das is an acronym of direct attached storage and is a storage system where servers are directly connected to the storage device in das block level access protocol is used to access data by applications.

Direct attached storage das is digital storage directly attached to the computer accessing it as opposed to storage accessed over a computer network i e.

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