# Upgrading Connectware to 2.1.0 (Docker)

Connectware 2.1.0 introduces support for the Siemens SIMATIC S7+ protocol and OPC UA complex data types. It also reintroduces service-level tracking for the Systemstate protocol, offering improved performance. Furthermore, it provides significant enhancements to resource deviation tracking and OPC UA reliability. For a complete list of changes, see the [2.1.0 changelog](https://docs.cybus.io/2-1-0/reference/changelog#what-has-changed-in-2.1.0).

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### Upgrading Connectware to 2.1.0

Follow the instructions in [Upgrading Connectware (Docker)](https://docs.cybus.io/2-1-0/documentation/installation-and-upgrades/upgrading-connectware/upgrading-connectware-docker) to upgrade to version 2.1.0.
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### Optional: Cleaning Up Disk Space After Upgrading to 2.1.0

As part of the Systemstate improvements in 2.1.0, the `resourceStates` NATS bucket is no longer used. If you want to save disk space, you can delete this bucket.

* To clean up disk space, run the following:

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```bash
CW_SCS_CONTAINER=$(docker container ls -q -f "label=io.cybus.connectware=core" -f "label=com.docker.compose.service=system-control-server")
docker run --rm -it \
-v $(docker inspect ${CW_SCS_CONTAINER}  | jq -r '.[].Mounts[] | select(.Destination == "/connectware_certs") | .Name'):/connectware_certs \
--network=container:${CW_SCS_CONTAINER} \
--pid=container:${CW_SCS_CONTAINER} \
registry.cybus.io/cybus/connectware-toolkit:1.4.0 -c 'source /connectware_certs/env-1.0.sh && nats -s nats:4222 --user cybus_auth --password $CYBUS_NATS_AUTH_PASSWORD --tlscert=/connectware_certs/cybus_client.crt --tlskey=/connectware_certs/cybus_client.key --tlsca=/connectware_certs/cybus_combined_ca.crt kv del resourceStates -f'
```

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