# Limits and Quotas

## Limits
The following table shows which limits are applied to SOS compared to AWS.

| Usage                                                  | Limit                  | AWS S3 equivalent      |
|--------------------------------------------------------|------------------------|------------------------|
| Maximum object size                                    | 4TiB                   | 5TiB                   |
| Maximum number of parts in a multipart upload          | 10000                  | 10000                  |
| Minimum part size                                      | 5MiB *                 | 5MiB *                 |
| Maximum part size                                      | 5GiB                   | 5GiB                   |
| Maximum number of objects in a bucket                  | unlimited              | unlimited              |
| Maximum number of versions per object                  | 1000                   | unlimited              |
| Minimum billed size                                    | 128kb                  | 128kb                  |
| Maximum metadata size                                  | 2kb                    | 2kb                    |
| Maximum tags per object                                | 10                     | 10                     |
| Maximum tag key size                                   | 128 char               | 128 char               |
| Maximum tag value size                                 | 256 char               | 256 char               |
| Maximum bucket name size                               | 64 char **             | 64 char **             |
| Maximum key name size                                  | 1024 byte (UTF-8)      | 1024 byte (UTF-8)      |
| Maximum number of objects per delete-objects operation | 1000                   | 1000                   |

>  *)  does not apply to the 'last part' **)  DNS compatible

### Unsupported S3 Features

  While we strive to maintain full compatibility with the S3 API, we do not support all S3 features.

Currently, the following functionality cannot be used on Exoscale:
- [Object Tagging](https://docs.aws.amazon.com/AmazonS3/latest/userguide/object-tagging.html)
- [Object Annotations](https://docs.aws.amazon.com/AmazonS3/latest/userguide/annotations-overview.html)
- [Object Lifecycle Management](https://docs.aws.amazon.com/AmazonS3/latest/userguide/object-lifecycle-mgmt.html)
- [Bucket Access Logging](https://docs.aws.amazon.com/AmazonS3/latest/userguide/ServerLogs.html)
- [Bucket Event Notification](https://docs.aws.amazon.com/AmazonS3/latest/userguide/NotificationHowTo.html)
- [Static Website Hosting](https://docs.aws.amazon.com/AmazonS3/latest/userguide/WebsiteHosting.html)


## Quotas
<!--- Template Guidance 
A table with the quotas of the service.
Below is an example for SOS. Even a single line in the table is OK.
--->
| Usage                                                  | Limit                  | AWS S3 equivalent      |
|--------------------------------------------------------|------------------------|------------------------|
| Maximum number of buckets                              | 20                     | 100                    |


## Availability
Object Storage is available in all zones.