What’s Inside a Hard Disk Drive

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I had a bunch of disks that need to be wiped out and recycled. So I thought why not tearing apart some of them and see what looks like the inside of a hard drive that can host so much data on it. And here is what I did. I have to admit that I had so much fun that I had to share them.

First off, this is a 3.5″ 500GB Hitachi HDD with one disk plate.

2017 03 01 13.03.07 600x450 - What's Inside a Hard Disk Drive

Now, let’s take a look a Seagate 3.5″ 1TB HDD inside. There are two disk plates instead of one and two pairs of reading heads as well.

1TB HDD Inside 600x450 - What's Inside a Hard Disk Drive

And here is a WD 3.5″ 3TB one with three disk plates and three pairs of reading heads.

3TB HDD Inside 600x450 - What's Inside a Hard Disk Drive

It’s pretty much the same as a 2.5″ HDD looks like too, despite the size. Below is a 2.5″ 750GB HDD.

750GB HDD 2.5 Inch inside 600x314 - What's Inside a Hard Disk Drive

Take a closer look at the reading heads and the disk plate.

HDD Reading Head and Plate 600x350 - What's Inside a Hard Disk Drive

I have to say that the plates are so shining that I am actually collecting them now hoping to build a wall of them one day.

These are the regular consumer type of SATA drives I tore apart. I may post later when I have a chance to take apart an SSD drive and see what’s inside.

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