Direct Attached Storage
Direct-attached storage (or DAS) is digital storage formed of Hard Drives or SSD, that is directly attached to a host system which accesses it as it would it’s own internal storage, unlike the storage which is normally accessed over the network of the computer system (NAS). Direct-attached storage is very straightforward to set up, simple and clear-cut to access over plug-n-play, which is why DAS devices are generally used for fast, localized data storage and for an additional backup tier to home or business users. For any individual PC user, the system’s hard disk drive is basically the most common form of DAS, i.e. the direct-attached storage.
But modern DAS features RAID functionality, for one or more drives to combine their storage in a RAID environment as a means to provide additional storage space or redundancy. RAID stands for Redundant Array of Independent Disks. It works as a means of spreading your data across several drives yet still maintaining the ability to recover data if 1 drive fails. There are many kinds of RAID, Ranging from RAID 0, 1, 5, 6, 10 and many more variations. Each weighs up the Pros and Cons of Capacity vs Redundancy (safety).
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