What is DAS?
DAS is an architecture of storage. In this storage device, we can attach the devices to a computer or server directly.
DAS is generally used in small business environments or we can use it for specific applications which require high performance at the storage level as well as low latency at the storage level.
No network/storage protocols to configure in DAS.
Easy to set up, configure & manage the DAS storage.
DAS is less scalable than NAS and SAN.
To scale up, it requires extra hardware and cables to support multiple servers.
DAS is cost-effective & less expensive than NAS or SAN solutions.
DAS is commonly used for applications which require quick access like scientific computation, video editing etc.
In DAS, we can replace failed or degraded disks without shutting down the system.
It also provides hot-swap features without shutting down the system.
Advantages of DAS:
Low latency: In DAS, We generally get low latency and high performance because it is directly connected to a computer/server.
Ease of use: It is very easy to install, configure, manage, and use. Just plug in the device to the computer and use it.
Cost-effective: DAS is cost-effective & less expensive than SAN/NAS storage solutions.
Scalability: DAS is scalable. As per our requirement, we can add more devices.
Disadvantages of DAS:
Scalability: There is a limitation of available ports. We can't add more devices without including more hardware.
Accessibility: DAS is available for connected systems only. We can't share data with other systems or users. If required, need to use other solutions.
Lack of redundancy: Redundancy and fault tolerance features are not available in DAS. It means. we may lose the data in case of the drive fails.
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