Different Storage Devices And How They Work?

Our computers and smartphones are well equipped with storage for data and we came to know about different terms like RAM, SSD, HDD and Cache. So, let’s see what are they? and tech. behind them?

RAM – Random Access Memory-

Whenever we search for a smartphone or a laptop this term is very much common that this phone has 4GB RAM and this laptop has 8GB RAM etc. So, basically, the concept behind the working of RAM is that more the RAM is better, faster and smoother will be the working and every one of us is very much aware of it. But in actual the thing is not exactly like this and for this firstly let’s understand the working tech of RAM. Suppose you want to play PUBG in your smartphone or PC then we simply click on the icon and behind this, the process which took place is that RAM asks the processor to load the game. Now you want to open WhatsApp as well the same process will take place. Now if our RAM is of 4GB and it took 1GB to load PUBG and 400MB to load WhatsApp, it means our phone will work smoothly. So, from here we can say that it is not very much important to have more RAM because it all depends on our working.

HDD And SSD – Hard Disk Drive And Solid State Drive:

After the RAM the next memory is HDD or SSD. As we have seen above that RAM is volatile in nature means the data on it is not stored but HDD and SSD are used for storing the data safely in our PC. Carrying on with the above example, when the processor is asked for playing a song then the processor will search it in the HDD of the PC where it is stored and then loads it into the RAM. So, the basic working of HDD and SSD is up to storing only. Now let’s see what is HDD and SSD? and how they are different from each other.

So, Hard Disk Drive (HDD) is very widely used in laptop and PCs where a box-like structure carries disks or platters in it and a metallic arm is used to read and write the data. Faster the arm moves, faster is the data processing. Whereas in Solid State Drive (SSD) there is no arm for movement of data as it works on NAND flash memory and that’s why it is faster than HDD. So, which one is better? If we talk about less price and more storage then HDD is the best option otherwise the SSD is faster in speed and more reliable to use but less in storage as compared to HDD.

Cache Memory – For Easy and Fast Working:

All the mentioned storages work together hand in hand. Talking about the Cache memory then it is kept beside to the RAM of the system. Whenever the RAM asks to load a process then CPU firstly check the Cache memory that whether the process is already there or not if not then load otherwise continue with it’s own tasks. So, the Cache is used for making the working more faster as the frequenlty used processes are loded in the Cache of the system and whenever it is aked to load then loaded immediately. We can say that this is the reasin that Cache is kept nearer to RAM. If we talk about the size of the Cache then it is very much small in size like 2MB or 3MB only because it’s task is to load the frequent process fastly.

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