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 Feb 22, 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 Do I Backup My Game Files on PC?

Looking for a way to back up your game files on a PC? This post covers the ways to back up game files on both Windows and macOS computers. Keep reading and find your answer here. 


Mar 10, 2023

How to Copy Files from Hard Disk without OS

Normally, you can't get access to these data if your computer's operating system is damaged or can't boot. Do you know it is possible to copy files from the hard drive even without booting the Windows system? Read the post and know how to.


Feb 22, 2023

What Do You Use to Backup Your Edits?

What do you use to backup your edits? Is there any way to ensure that my edits are always in a safe state? If you have such questions, then do not miss our post. You can get all the backup tips you want here.


Apr 30, 2023

Why Should You Back Up Your Data Files before Upgrading from Windows 7 to Windows 10?

Why should you back up data files before upgrading from Windows 7 to Windows 10 or Windows 11? Well, having a backup of your data files has many benefits; please keep reading and find the reasons.


Feb 22, 2023

Use Google Drive for Backup Personal Data

Is it good to use Google Drive for backup personal data? In order to protect personal data from loss due to any factor, it is crucial to choose a good tool to back up your important data. Can Google Drive be a good helper? This article will tell you the answer and recommend a better backup solution for you.


Mar 29, 2023

How Do I Backup My Programs to An External Hard Drive?

How do I back up my programs to an external hard drive? If you have such confusion in your mind, you can read this short post. We offered detailed answers to help you back up your program files with great ease.


Feb 22, 2023