Backup files of Tair (Redis OSS-compatible) can be retained for 7 days. To keep them longer—for regulatory compliance, security requirements, or local testing—download them to your computer or a self-managed database.
Limitations
Download is not supported for ESSD/SSD-based instances. Check your instance storage type before proceeding.
| Storage type | Supported |
|---|---|
| Standard (non-ESSD/SSD) | Yes |
| ESSD/SSD-based | No |
Prerequisites
Before you begin, ensure that you have:
A Tair (Redis OSS-compatible) instance with a standard storage type
An existing backup file under Backup and Restoration
(For intranet download) An Elastic Compute Service (ECS) instance under the same account as your Tair instance
Download a backup file
Log on to the console and go to the Instances page. In the top navigation bar, select the region where your instance resides, then click the instance ID.
In the left-side navigation pane, click Backup and Restoration.
Find the backup file and click Download Backups in the Action column.
In the dialog box, select a download method and follow the steps in the next section.
Choose a download method
| Method | When to use | Speed | Security |
|---|---|---|---|
| Download | Download directly to your local computer | Standard | Standard |
| Get URL for Intranet | Your ECS instance and Tair instance are under the same account | Faster | Higher |
| Get URL for Internet | No internal network access is available | Standard | Standard |
The ECS instance must belong to the same account as the Tair instance to use intranet download. The instances do not need to be in the same virtual private cloud (VPC).
After selecting a method, copy the URL and use the appropriate command below to download the file.
Download commands
Windows
Enter the URL in the browser address bar and press Enter. The browser downloads the backup file automatically.
Linux
wget -c '<backup-file-url>' -O <filename>.rdbWrap the URL in single quotation marks. Without them, wget returns an http request sent, awaiting response error.
Example:
wget -c 'http://rds****.oss-cn-hangzhou-internal.aliyuncs.com/custins416****/hins1****.rdb?****' -O backupfile.rdbReplace the URL with the one copied from the console, and set <filename> to a name of your choice.
FAQ
Do I need to download backup files for every node in a cluster?
Yes. For cluster instances and read/write splitting instances, download the backup file for each data node separately. Missing any node results in incomplete data.
Can I use the intranet URL from a different account?
No. The intranet URL only works for ECS instances under the same account as the Tair instance. If your ECS instance is under a different account, use Get URL for Internet instead.
Why does my `wget` command hang with "http request sent, awaiting response"?
The URL contains special characters that the shell interprets incorrectly. Wrap the entire URL in single quotation marks:
wget -c '<your-url>' -O backupfile.rdbAPI reference
| Operation | Description |
|---|---|
| DescribeBackups | Queries backup file information, including download URLs |