How Long Does a 100GB Backup Take?

I have roughly 100GB of data on my Windows 10 computer, and I want to back up this data. However, I worry it will take a long time to back it up. How long does a 100GB backup take? Any suggestions will be appreciated.

Best Answered by

Jerry· Answered on Oct 18, 2023

It is hard to give you a precise time about how long a 100GB backup takes.

Depending on the maximum speed and connection bandwidth of your storage device. It also relies on the kinds of files stored on the disk. The disk is speed-limited and will operate closer to 1 MB/s if you have many small files. Cloning the partition is quicker if you have many little files like this. Instead of attempting to locate and read each file, the disk does a raw sequential read of every sector on the drive.

Assuming you are backing up your data from one hard drive to another and that both are SATA drives running at 3Gb/s:

3Gb = 3GB/s / 8 = roughly 375MB/s.

Without worrying about overheads:

100GB / 375MB/s = 266 seconds = 4 minutes, 26 seconds.

What backup tool are you employing? The one that comes with Windows is awful. A 200 GB system has taken 2-3 days, in my experience. Check out Easus Todo Backup. Additionally, only the initial backup must be a full backup (recurring about once a month). After that, you can use incremental backups for your daily and weekly backups.

It is hard to give you a precise time about how long a 100GB backup takes. But if you use professional backup software, your waiting time will be reduced.

Related article: How Long Does it Take to Backup a Computer?

Download EaseUS Todo Backup to Protect Computer Data!

Find best solutions to computer backup, cloud storage, data security, and disk cloning with full guidance.

People Also Ask

How Often Does Windows Back Up the Registry Automatically?

Have you ever wondered how often does Windows back up the Registry automatically? Does it have anything to do with Windows restore points? Read this post from EaseUS to learn the answer to this question and more details about the Registry.


Oct 18, 2023

What Is the Best Backup Strategy for A Student?

As a newbie in the backup area, are you wondering what is the best backup strategy for a student? What backup software and backup method should you choose? Do not miss this short post, we are going to share you some useful tips.


Nov 17, 2023

Does Windows 10 Come with Antivirus?

Does windows 10 come with antivirus? Do you want to know the answer? If yes, this short article can help you. After reading this post, you will learn whether Windows 10 comes with antivirus software and how to protect your data better.


Oct 18, 2023

How Do I Backup My Steam Games Before Modding

How do I backup my Steam Games before modding? What is the most effective solution to back up my game files? Do not pass this short post, and we will give you every tip you would like to know.


Nov 17, 2023

Should I Install Steam Game on External Hard Drive?

Don't know if you can put and install the Steam game data on an external hard drive? Read this post, and you'll get your answer here. 


Nov 17, 2023

Do I Need To Backup My Files Before Upgrading to Windows 10/11?

Will a system upgrading erase files on computer? Is it necessary to backup files before upgrading to Windows 10 or Windows 11? If you have no idea about whether you should save a copy of your files, read this quick post, and find your answer here.


Nov 17, 2023