Cloud computing is defined as a sourcing model that provides computing and storage capacities from pools via networks. Accordingly, the network is also an integral component of cloud computing. VPCs separate the resources of different tenants from one another, VPN and Elastic IP enable secure access via the Internet, etc. Data transfer to and within the Open Telekom Cloud is free of charge; downloading and sending out data are priced on a staggered scale based on data volume. The entire outbound data volume for a calendar month is added up and used as a basis for billing. For outbound, we split the data volume into to OBS outbound and VPC outbound. We have summarized the free and paid data transfer in the table below.
Free and paid data transfer
Example: Network
You have 100 TB of data stored in the Open Telekom Cloud. Over the month, you add another 15 TB. In the same period, users used the stored data. In total, 20 TB of data was downloaded by users. Only the downloaded data (Internet traffic outbound upflow) incur charges. This data traffic reaches the fourth billing scale.
Calculation of costs for data traffic (schematic)
Under the use of the Private Link Access Service (PLAS), i.e., Direct Connect, the rules for the costs of data traffic explained above are voided. There is no longer any billing based on the outbound data volume.
Direct Connect (DC)
Direct Connect (DC) provides a dedicated connection to the Open Telekom Cloud. Billing is based on the provided bandwidth and is calculated on an hourly basis. DC enables connectivity to the Open Telekom Cloud via MPLS, Ethernet Connect, or Cloud Exchange (e.g., Equinix). The service is charged according to the chosen bandwidth. A connection to a T-Systems data center is required. The costs for this connection are not included in the Direct Connect fee. Outbound data volumes transmitted via this connection are not billed separately; instead, a flat rate is charged for providing the connection. The connection to the Open Telekom Cloud is billed based on the selected bandwidth and the number of physical ports used. Dedicated connections are available with 1 Gbit/s, 10 Gbit/s, and 100 Gbit/s ports. Smaller bandwidths are available via shared hosted ports. A one-time setup fee of 274€ is charged per connection.
High-performance network connections to the Open Telekom Cloud
There are different scenarios for direct connections to the Open Telekom Cloud (OTC). With Ethernet Connect one-way or two-way (active/ passive) connections are possible. MPLS always has a two-way connection in active/passive mode. We always recommend a redundant connection. Currently, only a two-way active/passive connection is supported.
Overview calculation quantities
Domain Name Service (DNS)
With the Domain Name Service, two components are included in the billing: First, the number of domains created, and second, the number of queries/requests. The created domains are billed by the hour, while the queries are billed per million. With intensive use of the service (more than a billion inquiries per month), users receive a discount via scales.
Elastic Load Balancer (ELB)
The Open Telekom Cloud currently offers two load balancer models. The Elastic Load Balancer is a pure L7 load balancer that is charged hourly. There is also the Dedicated Load Balancer, which can be designed as an L7 or L4 load balancer, for which one instance is created each. The respective load balancer is also charged according to the AZ in which it will be used. Another parameter is the size: there are 6 different dimensions depending on the expected connections that are to be established via this service.
Other Network Services
Other billing models are used for the remaining Open Telekom Cloud network services. Elastic IP, Elastic Load Balancer, NAT Gateway Service and VPC Endpoint are charged „pay-as-you-go“ according to usage hours.
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