AWS S3 Sync Only Changed Files with AWS CLI Command

Quick Navigation:

• Why AWS S3 Sync Only Changed Files?
• AWS S3 Sync Only Changed Files Using AWS CLI Command
• Another Way to Sync Files to Amazon S3 Directly
• 1 Tip: Sync AWS S3 to Another S3 Account
• AWS S3 Sync Not Working and Fixes
• The End

Why AWS S3 Sync Only Changed Files?

Amazon S3 attracts millions of users to store a large amount of data in the cloud. More and more data sent to the cloud makes it difficult to manage especially for teams and businesses. Thus, Amazon provides you with the sync method, sync only changed files, and you can enjoy the following benefits:

In summary, Amazon S3 syncs only changed files offers numerous advantages for businesses seeking to optimize their backup processes.

AWS S3 Sync Only Changed Files Using AWS CLI Command

Fortunately, the AWS CLI offers a simple yet powerful command for syncing files between your local system and Amazon S3 buckets.

To sync only changed files to Amazon S3, you can try the AWS CLI Command to make it:

1. Please install the AWS CLI on your local computer. Follow the official AWS documentation to download and set up the CLI. Once installed, configure it with your AWS credentials using the "aws configure" command.

2. To sync only changed files, try the "--size-only" or "--update" option, which compares file sizes or modification timestamps, to determine if a file needs syncing.

3. To automatically run the command, you have to use the Task Scheduler or others to run regularly to make sure the files can be synced on a scheduler and make it up to date.

Another Way to Sync Files to Amazon S3 Directly

If you want to an easy way to sync files to Amazon S3, you can try the powerful web-based multi-cloud storage manager - MultCloud, which allows you to upload files to Amazon S3 in bulk.

Here is how it works:

1. Please sign up for a free MultCloud account, and log in to MultCloud Dashboard.

2. Tap Add Cloud from the left side, then choose Amazon S3 and follow the guide to add.

3. Click to open a bucket in Amazon S3, tap Upload File from the top menu.

4. Select the computer files and hit Open to sync files to Amazon S3 directly.

Besides, if you are surfing on the Internet, and want to keep the important files from the webpage, you can save web files from URL, Torrent, and Magnets to Amazon S3 or other clouds directly without downloading first.

1 Tip: Sync AWS S3 to Another S3 Account

Sometimes, you need to sync Amazon S3 to another S3 account for data protection, there are up to 10 sync modes can meet your demands that are provided by MultCloud, like Real Time Sync, two-way sync, one-way sync, move sync, mirror sync, full backup sync, incremental sync, and so more.

To sync files from one Amazon S3 to another account directly and sync only changed files, you can try the Incremental sync. Let’s find out how it works with Incremental sync.

1. Please add your two Amazon S3 accounts by hitting Add Cloud.

2. Tap Cloud Sync under Common Tools, then choose a bucket from one Amazon S3 as the source, and another Amazon S3 as the target.

3. Hit Options > Sync Modes, then select Incremental Sync from the one-way sync list.

4. Press the Sync Now button to sync only changed files from Amazon S3 to another account directly.

Once the Amazon S3 sync task started, the first sync will be a full sync and then incremental syncs. That is means the first sync will sync all files and then it only sync changed files from Amazon S3 to another account since the second execute time.

AWS S3 Sync Not Working and Fixes

"AWS S3 sync not working" can occur for various reasons, and troubleshooting requires a systematic approach. Here are some common causes and potential solutions:

The End

After reading all of these, AWS S3 sync only changed files can be completed with AWS CLI command. If you just want to upload files to Amazon S3, MultCloud can be your one of choices. Besides, MultCloud allows you to sync files from one Amazon S3 to another account with Incremental sync, and let it just sync changed files as you like.