Service Specification ccloud³ (Compute Engine)

This English version is provided for convenience only. The German version is legally binding; in the event of any discrepancy between the two versions, the German version shall prevail.

1. Brief description

centron ccloud³ (“ccloud³”) provides virtual machines (“VMs”) consisting of a combination of computing power (vCPU), main memory (RAM) and local storage (SSD). Within the system limits specified by the platform, the Customer may freely configure the dimensioning of the resources (vCPU, RAM, SSD) and choose the instance size suitable for its use case.

The virtual machines are provisioned, managed and deleted by the Customer independently. The centron platform and corresponding application programming interfaces (APIs) are available for this purpose.

2. Key features

ccloud³ enables the Customer to create, operate and delete virtual machines as required. Use takes place on a self-service basis via a web interface in the centron portal and via APIs.

Provisioning takes place within one of several hardware specifications (“pools”), which allows different availability classes to be implemented. Each pool is designed to be independent of other pools with regard to power supply, cooling and local network connectivity, although several pools may be located within the same data centre.

3. Service plans

ccloud³ provides various instance types (“flavors”) that differ in terms of CPU performance, main memory and architecture.

The service plans are offered with CPU overprovisioning. The respective variant is indicated in the name of the pool. The underlying hardware (e.g. processor type or architecture) is specified in the technical documentation and can be viewed by the Customer.

The portfolio comprises different classes of instances, in particular:

• Worker Pool instances
• Power Pool instances
• High Availability Pool instances

These instances are available in different generations and architectures; vCPU and RAM can be freely selected within the limits.

A current overview of the available instances can be retrieved at any time via the centron platform or via the API.

The use of local disks (“Local Disk”) is independent of the selected pool. Local disks constitute persistent storage.

4. Metrics

Remuneration is usage-based according to the actual consumption per virtual machine (VM). Billing is based on the quantity of resources used per hour, with each hour or part thereof being charged as a full hour. The following metrics are used and recorded to determine the hourly consumption per virtual machine:

• vCPU: vCore / hour
• RAM: GB / hour
• SSD: GB / hour

The billable period begins with the creation of the virtual machine and ends with its deletion. Periods during which a VM is operated in a stopped state without resource reservation (“shelving”) are also charged.

Additionally used resources, such as Object Storage or Backup Storage, are billed separately in accordance with the applicable Service Specifications.

5. SLA specifics

Differentiated service level agreements apply to the availability of the virtual machines:

Virtual machines operated within a Worker Pool or Power Pool achieve a monthly availability of 99.5 %.

Virtual machines within a High Availability Pool achieve a monthly availability of 99.8 %.

States caused by an act or omission of the Customer, its vicarious agents or the users authorised by it shall not be deemed unavailability. This includes, in particular, the intentional or unintentional shutting down, pausing or stopping of virtual machines via the centron platform or the API.

6. Backup

Backup and restoration of the virtual machines are not part of the services and are entirely the responsibility of the Customer.

This includes, in particular, the backup of:

• the configuration of the virtual machines
• the data on local disks
• the data on attached block storage

Separate services or customer-side solutions are to be used to implement backup and recovery strategies.

7. Additional terms

The Customer is entitled to install and operate its own software on the virtual machines. Responsibility for licensing this software lies entirely with the Customer, unless expressly agreed otherwise.

Operating system images provided by centron may be used to create virtual machines. The portfolio of these images may be extended or adapted at any time without existing instances being affected.

By using these operating system images, the Customer accepts the respective licence terms of the manufacturers. A separate licence agreement is concluded between the Customer and the respective manufacturers.

The Provider assumes no warranty for selected operating system images and makes no availability commitments in respect of them. Likewise, the complete management of the operating system and of the software installed on it, including installation, maintenance, updates and security, lies exclusively with the Customer.

The Customer is responsible for the security of its virtual machines and of the applications operated on them.

Local disks offer no guarantee of persistence. They are suitable exclusively for temporary data or replicated data sets; permanent data storage is not guaranteed by the platform and should be booked separately.