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Wondering what an external hard drive is and how it works? Follow me through this eye-opening article to learn everything about this storage technology.
Overview
To begin with, an external hard drive could be a Hard Disk Drive, a Solid-State Drive, or a Solid-State Hybrid Drive. However, one thing is certain – such a storage device is not fixed inside the computer that uses it.
Rather than being inside the computer, an external drive is connected to the computer externally via one of its ports. No wonder it is called an “external” hard drive because external means outside.
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So, how does an external hard drive connect to a computer from the outside? Well, an external drive can be connected to a computer via a USB, FireWire, or eSATA.
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- Easily store and access 2TB to content on the go with the Seagate Portable Drive, a USB external hard drive
- Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop
- To get set up, connect the portable hard drive to a computer for automatic recognition no software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
Furthermore, external hard drives vary in storage capacity, with most of them offering up to 1 TB of storage space. Also, they are mostly portable, that’s why people sometimes refer to them as portable hard drives or mobile hard drives.
They are also known as removable hard drives, considering the fact that they can easily be disconnected from a computer. Besides, people mostly use external hard drives as supplemental storage.
In other words, we use them as an addition to the storage drive that is already on our computer. Having said all that, let us move on to the section below to learn how an external hard drive works.
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How Does an External Hard Drive Work?
As stated in the section above, an external hard drive can either be an HDD, SSD, or SSHD. Hence, it literally works the same way an HDD, SSD, or SSHD works.
In essence, if your external hard drive is an HDD, it will operate exactly like an HDD. Likewise, if it is an SSD, it will work just like an SSD.
However, the mode of connection is what differentiates an external hard drive from a regular internal HDD, SSD, or SSHD. Fundamentally, using an external hard drive is as easy as plugging one end of the data cable into the drive and the matching end on the computer.
For example, to connect a USB external drive to a computer, you connect the USB drive to the computer’s USB port. Most times, the computer powers the external drive via the data cable, which also serves as the power cable.
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- Easily store and access 5TB of content on the go with the Seagate portable drive, a USB external hard Drive
- Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop
- To get set up, connect the portable hard drive to a computer for automatic recognition software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
Hence, when you connect an external drive to a powered-on computer, it automatically appears on the computer’s screen. In most cases, it takes just a few seconds for the external drive to appear on a computer’s screen.
At this point, you can easily begin to save files on the external drive or extract files from it. Sometimes, the external drive might not automatically appear on your computer screen due to some settings after a successful connection.
You can easily access the external drive from Windows File Explorer if that’s the case. The drive will appear as a second storage drive on your computer alongside the internal storage drive.
Hence, once you open it, you will be able to retrieve/send files from/to it. Now that we know how an external hard drive works, let us examine some of its features in the subsequent section below.
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In the previous sections, we discussed what an external hard drive is all about and how it works. However, in this section, we will look at some of the major features of this storage technology.
It Can be an HDD or SSD
An external hard drive can either be an HDD (Hard Disk Drive) or SSD (Solid State Drive). As a matter of fact, it can be an SSHD (Solid State Hybrid Drive).
Besides, an external hard drive operates either like an HDD, SSD, or SSHD. Essentially, if your external hard drive is an SSD, it will have the speed of and work exactly like an SSD.
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- Easily store and access 1TB to content on the go with the Seagate Portable Drive, a USB external hard drive.Specific uses: Personal
- Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop. Reformatting may be required for Mac
- To get set up, connect the portable hard drive to a computer for automatic recognition no software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
It is Connected to a Device Externally
As the name suggests, an external hard drive is connected to a computer from the outside. Additionally, it is connected to a computer via USB, FireWire, or eSATA.
As a matter of fact, there are some external hard drives that can connect to a device wirelessly.
An External Drive can Store Various Kinds of Data
An external hard drive isn’t limited to a certain kind of data. It is capable of storing different kinds of data ranging from documents to images.
In actual fact, you can save high-definition or even 4K videos on an external hard drive. Also, you can store applications and installation software on this storage technology.
It is Mostly Used as Supplemental or Backup Storage
People mostly use an external hard drive as an addition to the storage drive already on their computer. For example, if you have a large number of files that are slowing down your computer, you can store them on your external hard drive instead.
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It Varies in Storage Capacity
As with internal hard drives, external hard drives come in different storage capacities. Hence, choosing a particular external hard drive sometimes depends on the number of things you plan to store.
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- Easily store and access 4TB of content on the go with the Seagate Portable Drive, a USB external hard drive.Specific uses: Personal
- Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop
- To get set up, connect the portable hard drive to a computer for automatic recognition no software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
Pros Of An External Hard Drive
It is Easy to Use
Using an external hard drive is very easy. All you need to do is connect it to the computer, and you are good to go.
It is Great for Moving Files from One Computer to Another
Regardless of the operating system, an external hard drive works on every computer. Hence, it is an ideal means of moving data from one computer to another.
It is Lightweight and Portable
Most externaI hard drives nowadays are portable and lightweight.
Due to this, you can easily carry them around with ease. Also, you can throw them inside your backpack and take them with you no matter where you are traveling.
As a matter of fact, some external hard drives are small enough to fit into your pocket.
It is Ideal for Backing Up Files
You can use an externaI hard drive as an emergency backup drive. Hence, if your computer’s internal storage drive eventually crashes, you can simply recover your files from this storage technology.
It is Good for a Hardcore Gamer and Improves Gaming
Modern PC games are massive in graphical detail, meaning they consume a huge amount of space on your computer.
Hence, if you’re a hardcore PC gamer, there is a fair chance your computer will get overstuffed with games. In fact, your computer’s internal storage drive might run out of space, and you won’t be able to install more games.
If that’s the case, you may get an externaI hard drive to store more games. Also, remember that your computer won’t perform as smoothly if you’re running low on storage space.
Thus, saving some of your games on an external hard drive could significantly boost your gaming experience.
Cons of an External Hard Drive
They are Prone to Theft
Because external hard drives are mostly small and lightweight, they can easily be stolen or even misplaced.
Sadly, when that happens, there is no way to retrieve the files saved on the drive.
Accidental Interruption During File Transfer
You may accidentally shake or disconnect the data cable when transferring data from an externaI hard drive to a computer. This can cause the data in transit to get corrupted.
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- [Upgraded Version] - This external hard drive features a mirrored logo stripe combined with a striped anti-slip design, and the rounded corners of the casing make it easier to grip. The stripes also have a heat dissipation function, ensuring stable and fast data transfer.
- 【Ultra-thin and quiet】 - The motherboard adopts JMicron 578 noise-free solution, giving you a quiet working environment. Lightweight and portable size designed to fit in your pocket for easy portability.
- 【Ultra-Fast Data Transfers】 - Pairing this external hard drive with JMicron 578 solution USB 3.0 and USB 2.0 interfaces enables blazing-fast data transfer. It boasts theoretical read speeds of up to 125MB/s and write speeds of up to 103MB/s.
- 【Plug and Play】 - With no software to install, just plug it in and the drive is ready to use.The hard disk chip is wrapped with an aluminum anti-interference layer to increase heat dissipation and protect data.
- 【What You Get】 - 1 x Portable Hard Drive, 1 x USB 3.0 Cable, 1 x User Manual, Gift-type shell packaging ,Three-year manufacturer's warranty and free technical support services.
It Can Easily Get Faulty
Most, if not all, external hard drives need to be handled with care.
Hence, we can consider them very fragile. Therefore, if you don’t have a casing to protect this storage technology from bumps and shakes, you can unintentionally get it faulty.
They May be Prone to Overheating
Internal hard drives are usually installed to allow the computer’s cooling system to cool them off during operation.
However, that’s impossible in the case of an externaI hard drive, considering the fact that they are outside the computer. Hence, this storage technology is likely to overheat under heavy usage or when used in sunny areas.
Conclusion
External hard drives are portable, user-friendly devices that can offer immediate storage whenever you need it. In addition to that, they are connected to a device from the outside via USB, FireWire, eSATA, or even wirelessly.
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsMoreover, an external hard drive can either be an SSD, HDD, or SSHD. Also, it is ideal for transferring data from one device to another as well as for secondary/backup storage.
Besides, externaI hard drives are capable of storing various kinds of data, including images, documents, and videos. However, their portability makes them prone to theft and can easily get faulty.
I hope I was able to explain everything about an externaI hard drive comprehensively. I also hope that you found this article helpful and easy to understand.
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Finally, you may find other helpful articles on our Storage & Disk Technology Explained page.
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