What is the difference between a NAS and a SAN
What is the difference between a NAS and a SANNow NAS or NAS stands for network-attached storage. If you wanted to store data in a centralized location where it can be accessed from all of your devices on your network, you can do this by using a network-attached storage device.
A NAS is a storage device that is used for storing.
Storing data. Now typically a NAS is a box that will have multiple hard drives in a raid configuration for redundancy and it also has a network interface card that will directly attach to a switch or router so that the data can be accessed over a network. Then once it's on the network, it can be accessed from other devices.
These desktops laptops and servers and can be accessed as a shared drive. Now NASA's are typically used in homes and they are also used in small to medium-sized businesses, but one of the main disadvantages with an S is it has a single point of failure. So as an example, let's say if a component fails such as if the power supply fails on the nest then all of the other devices will not be able to access its data.
Now as San or Storage area network is a special high-speed network that stores and provides access to large amounts of data. So basically, it's a dedicated network that's used for data storage. And this network consists of multiple disk array switches and servers. And because it has more than one of these devices SAN is fully tolerant and the data is also shared among several disk arrays.
So if a switch or disk array, or if a server goes down, On the data can still be accessed. And when is server accesses the data on a SAN it accesses the data as if it was a local hard drive because that's how operating systems recognize a SAN. It's recognized as a local attached hard drive rather than a shared network drive like in a mass and sands are also highly scalable because adding more storage space can easily be done without an interruption on the network.
So as data before SAN is a high-speed network and that's because in sanSANSd all the devices are interconnected meaning that all of the devices are connected to each other and they are interconnected using fiber channel, which is a standard percents fiber channel is fiber optics and it has speeds between two gigabits per second all the way up to 128 GB per second.
So fiber channel is extremely fast and it's also very expensive and most. Today you. Use fiber channel but also as an alternative to fiber channel some sands use ice-cuzzy instead, which is a cheaper alternative to fiber channel, but it's also not as fast as fiber channel. Now one of the main reasons for using a SAN is because sands are not affected by network traffic such as bottlenecks that can happen in a local area network and this is because sands aren't really a part of a local area network sands are partitioned off.
Client network all by itself and other reasons for sands as I mentioned before sands are highly scalable and they are also very redundant and also as you might have guessed sands are not cheap they come at a very high cost which is why they are mainly used by large companies and large organizations.