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Advantages of SAN over NAS – Let’s discuss!

by | Mar 12, 2021

Need to know the Advantages of SAN over NAS? We can help you.

Network-attached storage (NAS) and Storage area network (SAN) were developed to solve the problem of making stored data available to a lot of users at once. Each of them provides dedicated storage for a group of users.

Here at Bobcares, we handle disk and storage-related issues of our customers as a part of our Server Management Services.

Today, we will discuss in detail the Advantages of SAN over NAS.

What are NAS and SAN?

NAS is a data storage device connected to a network providing data access to clients. At its base, it is built with either SAS or SATA disks arranged in a RAID and it is then attached to devices over ethernet.

Above all, NAS is a highly specialized file server and because of its hardware, software, or specific configuration, NAS only does storage.

SAN is a dedicated network that enables servers to share a pool of storage resources. SANs are complex, interwoven systems with mission-critical data and databases.

Advantages of SAN over NAS

1. High performance

A SAN other devices in the network will not have to use local storage. Thus, allowing them to run more smoothly. When the server rarely or never uses internal hard drives it will naturally consume less power and run at a cooler temperature.

2. Fast backup

One can take more rapid backups when the client OSs see the SAN as attached storage. The transparency of SAN  to the client OS allows storing data quickly. As it is an entirely distinct network, SANs do not cause any bottlenecks as other storage solutions do at times.

3. Disaster recovery

SAN makes it easy for replicating data from the primary locations to an offsite. It helps us to replicate rapidly and get our environment up and running quickly. As a result, we will not get many downtimes.

4. Better redundancy

Since the servers within the SAN function as one cluster, you are not necessarily accessing one particular device. If one of the servers goes down, the other devices within the same network pick up the slack. Such a high level of redundancy is unparalleled by any other storage solution.

5. Scalability

Entry-level and NAS devices are not highly scalable, but high-end NAS systems scale to petabytes using clusters or scale-out nodes. In contrast, scalability is a major driver for purchasing a SAN. Its network architecture enables admins to scale performance and capacity in scale-up or scale-out configurations.

6. Extremely fast data access

SAN makes it easy for us to access data very fast.

7. Dedicated network for storage relieves stress on LAN

When we have a dedicated network like that of SAN there will not be much pressure on LAN regarding the storage space.

8. OS-level access to files

SAN allows us to access files at block-level or OS level.

9. High quality-of-service for demanding applications

Applications such as the video editing ones get simultaneous access to the cache thus benefiting them from not getting network traffic bottlenecks.

10. Typically used in professional and enterprise environments.

Storage area networks are more always chosen over NAS.

11. Improves Disk Utilization.

The primary advantage of using a Storage Area Network (SAN) is improving disk utilization.

Moreover, centralizing storage availability allows managing everything easily.



In short, we saw the advantages of SAN over NAS in today’s article.


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