Only files within 100 MB in JupyterLab can be downloaded to a local PC. You can perform operations in different scenarios based on the storage location selected when creating a notebook instance.

Notebook Instances Using OBS Storage

For notebook instances that use OBS storage, you can use OBS or the ModelArts SDK to download files from OBS to a local PC.

Method 1: Downloading the files using OBS
Use OBS to download the files to the local PC. If you have a large amount of data, use OBS Browser+ to download data or folders.
Method 2: Downloading the files using the ModelArts SDKs
1. Download and install the ModelArts SDKs on your local PC. For details, see .
2. Authenticate sessions of the ModelArts SDKs. For details, see .
3. from OBS to the local PC. The sample code is as follows:
```
from modelarts.session import Session
session=Session(access_key='***',secret_key='***',project_id='***',region_name='***')
session.download_data(bucket_path="/bucket_name/obs_file.txt",path="/home/user/obs_file.txt")
```

Downloading a File from JupyterLab

Notebook Instances Using OBS Storage