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Bare Metal Server (BMS)

Bare Metal Servers do away with hypervisors and virtualization: The computing resources are only equipped with a host operating system, offering users the maximum scope to design their own systems. They can freely design customized flavors based on their own hypervisors and virtualization technologies. Bare Metal Servers can also be used without virtualization: Because they do not come with a hypervisor, they offer more consistent performance than virtual machines, making them an ideal solution for big data analyses. Furthermore, Bare Metal Servers also offer better license conditions for the software used.

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Reasons for BMS in the Open Telekom Cloud

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The allocated resources run in a GDPR-compliant environment and fulfil all European requirements to run secure workloads with the scalable options of a cloud. Non-European authorities have no access.

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High Performance

BMS enables the use of dedicated computing resources without hypervisor overhead. This customized hardware offers an increased level of security and performance while avoiding the “noisy neighbour” effect (negative influences on the performance of the allocated resources caused by other users).

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Our services can be tailored to your exact needs – so you never overpay. You can book additional resources as needed and they will be ready in minutes. Different BMS flavors are available for each scenario and can be provided in a few minutes.

Key Features of BMS

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Cloud Service Integration

Bare Metal Service provides high integration with other services to provide computing, storage, and network resources. Linked services include Virtual Private Cloud (VPC), Image Management Service (IMS), Elastic Volume Service (EVS), Scalable File Service (SFS), Volume Backup Service (VBS), Cloud Eye (CES), and many more services to meet business needs in a cloud.

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The common hypervisors such as VMware, Citrix, KVM, Hyper-V are compatible with the Bare Metal Service. BMS enables a fast and smooth migration from on-premises to the cloud.

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The BMS service enables the isolation of physical resources and cannot be influenced by other tenants.

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High-Speed Network

Some BMS support InfiniBand at up to 100 Gbit/s between BMS and provide low latency connectivity to meet high-speed interconnection requirements.

Key Feature of BMS: Flexible Billing

Flexible Billing

BMS includes three pricing models: Elastic (hourly billing), Reserved (discounted monthly pricing for continuous use), and Reserved Upfront (increased discounts through prepayment). The license costs for the operating system are already included.

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The Bare Metal Service can help to reuse existing licences for RHEL, SUSE (SLES), Microsoft Windows Server, Microsoft SQL Server, Microsoft Office etc. This means you do not have to apply for a new one. With the BYOL license type, you can thus significantly reduce your costs.

BMS Flavor Overview

Compute Optimized

The compute optimized flavor is designed for general business purposes that require high performance, higher memory ratio and transactional workloads.


  • Regulatory requirements for physical resource isolation and selfdetermination of hypervisors.
  • Online transaction processing (OLTP) databases to run transactional workloads.

Supported Flavor


Sockets x Cores per Socket

2 x 8


Intel® Xeon® E5-2667 v4


256 GB

Local Disk

2 x 800GB (RAID 1)


2 x 10GE

To the service description

High-Performance Computing

The High-Performance computing BMS type provides a large number of CPU cores, a large memory size, and high throughput. These BMSs use Intel Skylake V5 CPUs, InfiniBand NICs and can be quickly provisioned.


  • High-performance computing with EVS disks and lower network latency.
  • HPC cluster environment with High-Speed-Connectivity between data nodes.

Supported flavor


Sockets x Cores per Socket

2 x 18


Intel® Skylake® 6151 V5


192 GB

Local Disk

1 x 1.6 TB NVMe SSD


1 x 100G IB, 2 x 10GE

To the service description

Memory Optimized

Memory-optimized BMS use processors optimized for high and stable computing performance. They offer a memory size of up to 4 TB based on DDR4 for memory-intensive applications with high demands on network bandwidth and data throughput in Packets per Second (PPS).


  • High-performance relational databases (e.g., MySQL) and NoSQL databases (e.g., MongoDB or Cassandra).
  • Distributed web-based caches are used to improve the performance of dynamic websites with database connections (e.g., Memcached or Redis).
  • Applications for processing big unstructured data in real-time (e.g., financial services or Hadoop/Spark clusters).
  • High-performance computing (HPC) and electronic design automation (EDA).

Supported flavor


Sockets x Cores per Socket

4 x 24


Intel® Xeon E7-8890 v4


2 - 4 TB

Local Disk

2 x 600 GB (RAID 1)
7 - 14 x 1.8 TB (RAID 5 - 50)
2 x 1.6TB NVMe SSD


2 x 10GE

To the service description

GPU Accelerated

Graphic-accelerated BMS use processors optimized for high and stable computing performance. They offer a memory size of up to 4 TB based on DDR4 for memory-intensive applications with high demands on network bandwidth and data throughput in Packets per Second (PPS).


  • AI training, scientific research with Nvidia P100 or V100 GPU
  • HPC environment with GPU functions and InfiniBand for low latency requirements between nodes

Supported flavor

physical.p1 | physical.p2

Sockets x Cores per Socket

2 x 14


Intel® Xeon E5-2690 v4


512 GB

Local Disk

2 x 600GB (RAID 1)
6 x 800 GB NVMe SSD


1 x 100G IB
2 x 10GE


8 x Tesla P100 | 8 x Tesla V100

To the service description

Use Cases

High-Performance Computing (HPC)

BMS enables high-performance computing for various industries such as scientific research, banking, or telecommunications.

Use Case: High-Peformance Computing (HPC)


  • Latest CPUs for high performance
  • Network latency in μs and up to 100 Gbit/s InfiniBand network support
  • Compatability and free accessible OpenStack APIs

Example Scenario

Multi-cluster HPC environment with low latency requirements and high network performance.


Bare Metal Server support Elastic Volume Service (EVS) to meet performance and security requirements.

Use Case: Databases


  • Scalable Capacity
  • Reliable data storage
  • BYOL
  • Large in-memory capability

Example Scenarios

Online transaction processing (OLTP) databases | In-memory databases like SAP HANA® | Mission-critical database services of governments and financial institutions

Big Data

BMS offers memory-optimised flavors with up to 4 TB memory to meet Big Data analysis requirements.

Use Case: High-Peformance Computing (HPC)


  • Dedicated local disks for data analysis
  • High-Speed-Connectivity between data nodes
  • Flexible, scalable and extendable infrastructure

Example Scenario

Big Data environment with Hadoop cluster

New Features

API Extension
View details
BMS & DeH – Marking with tags
View details

Find out more

Book now and claim starting credit of EUR 250* (code: 4UOTC250)

24/7 Service
Take advantage of our consulting services!

Our experts will be happy to help you.

We will answer any questions you have regarding testing, booking and usage – free and tailored to your needs. Try it out today!

Hotline: 24 hours a day, seven days a week 

0800 33 04477 from Germany
+800 33 04 47 70 from abroad

* Voucher can be redeemed until December 31, 2022. Please contact us when using the voucher for booking. The discount is only valid for customers with a billing address in Germany and expires two months after conclusion of the contract. The credit is deducted according to the valid list prices as per the service description. Payment of the credit in cash is excluded.

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