# Compressing backup files
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To save space in your Amazon S3 bucket, you can compress your backup files. For more information about compressing backup files, see [Backup compression](https://msdn.microsoft.com/en-us/library/bb964719.aspx) in the Microsoft documentation. 

Compressing your backup files is supported for the following database editions: 
+ Microsoft SQL Server Enterprise Edition 
+ Microsoft SQL Server Standard Edition 

To verify the compression option for your backup files, run the following code:

```
1. exec rdsadmin.dbo.rds_show_configuration 'S3 backup compression';
```

To turn on compression for your backup files, run the following code:

```
1. exec rdsadmin.dbo.rds_set_configuration 'S3 backup compression', 'true';
```

To turn off compression for your backup files, run the following code: 

```
1. exec rdsadmin.dbo.rds_set_configuration 'S3 backup compression', 'false';
```