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Elastic Cloud Server (ECS)

With the help of virtual machines (VM) from the cloud, you can book server capacities quickly and flexibly via the Internet. We have combined our broad portfolio of VM variants – so-called flavors – for you in our Elastic Cloud Server portfolio. You determine specifications such as the desired operating system or service duration. Since hardware components such as RAM and CPUs are emulated virtually, you can combine them freely according to your wishes. The result are flavors that are perfectly tailored to your needs. The Open Telekom Cloud uses KVM as a hypervisor to provide virtual machines in a total of nine performance classes via the ECS offering. These cover all possible use cases, such as graphics calculations, virtual workplace systems and Big Data functions.

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Reasons for ECS in the Open Telekom Cloud

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Data protection

Our service is operated in the EU under European management and is GDPR-compliant. Non-European authorities have no access.

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Highest performance

Independent analysts confirm that the ECS of the Open Telekom Cloud provided the best price-performance ratio among comparable providers.

ECS is flexible and easy to use.

Flexibility

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.


Key Features of ECS

ECS offers the highest quality with its wide range of advantages.

High Quality

  • Reliability: Our Service Level Agreements (SLA) guarantee 99.95% availability of the ECS service. The VMs run redundantly in two spatially separated availability zones (AZs) to minimize downtime.
  • Efficient networks: Our ECS offer relies on the quality-of-service principle: by allocating resources dynamically and prioritized, it optimizes communication in the network, provides reliable performance and uses bandwidth efficiently.
  • Security: In the event of a failure of the physical server on which the virtual ECS instance is located, the system automatically restores the affected workload.
All ECS numbers at a glance.

ECS Statistics

Cloud with many link nodes.

Cloud Service Integration

ECS provides high integration with other services to provide computing, storage, and network resources. Linked services include VPS, IMS, AS, EVS, VBS, CSBS, Cloud Eye, KMS, Anti DDos, Firewall and many more services to meet business needs in a cloud.

ECS is fully transparent.

Transparency

We use OpenStack as our software basis. This open-source solution is further developed by a dedicated community that subjects the code to a rigorous public review before each release to rule out errors and security gaps.

ECS offers a variety of billing models.

Flexible Billing

ECS 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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ECS: Bring your own license

BYOL

Bring your own license (BYOL) allows you to use your existing operating system license. This means you do not have to apply for a new one. With the BYOL license type, you can thus significantly reduce your costs when booking the ECS.

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ECS Flavors Overview

General Purpose

This ECS flavor provides a balanced level of compute, storage, and network capacity, and the ability to quickly add additional resources during peak loads.

Scenarios:

  • Applications
    The general-purpose ECS s2 and s3 are suitable for applications that have no special requirements in terms of CPU performance, memory space, hard disk capacity or bandwidth, but demand high standards of security and reliability. They require low initial investment and maintenance costs.
  • Application scenarios
    Application scenarios include corporate websites, office environments, corporate R&D and testing activities, web servers, and small databases.

Flavor

s2 | s3

vCPU/Memory Ratio

1:1 | 1:2 | 1:4 | 1:8

vCPUs

1 - 32

Memory

1 - 256GB

Maximum Intranet Bandwidth

8Gbit/s

Hardware

Intel® Xeon® Skylake 6161
Intel® Xeon® Cascade Lake 6278

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Dedicated General Purpose

This flavor uses scalable processors with high-speed intelligent network adapters. It is optimized for powerful and stable computing performance and network bandwidth with high PPS (packets per second) count.

Scenarios:

  • C4 ECSs
    Websites and web applications, general databases and cache servers, and medium and large enterprise applications with stringent compute and network performance requirements.
  • C3 ECSs
    Small and medium-sized databases, cache servers and search clusters with high stability requirements, also enterprise applications of different types and sizes.

Flavor

c3 | c4

vCPU/memory ratio

1:2 | 1:4

vCPUs

2 - 64

Memory

4 - 256GB

Maximum Intranet bandwidth

40Gbit/s

Hardware

Intel® Xeon® Skylake 6151
Intel® Xeon® Cascade Lake 6266

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Memory-Optimized

Memory-optimized ECS use processors optimized for high and stable computing performance. They offer a maximum memory size of 512 GB based on DDR4 for memory-intensive applications with high demands on network bandwidth and data throughput in Packets per Second (PPS).

Scenarios:

  • High-performance relational databases (e.g., MySQL) and NoSQL databases (e.g., MongoDB or Cassandra).
  • Distributed web-based caches 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).

Flavor

m2 | m3 | m4

vCPU/memory ratio

1:8

vCPUs

2 - 64

Memory

16 - 512GB

Maximum Intranet Bandwidth

40Gbit/s

Hardware

Intel® Xeon® Skylake 6151 
Intel® Xeon® Cascade Lake 6266
Intel® Xeon® Processor E5-2690 v4

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Large Memory

This flavor provides an even larger amount of memory than Memory-optimized ECS. It is used for applications that process large amounts of data and require low latency.

Scenarios:

  • OOLAP (online analytical processing) systems to perform multidimensional analysis at high speed, OLTP (online transactional processing) applications with active hyper-threading to execute a large number of database transactions in real time, SAP HANA applications (including Business Suite S/4HANA, Business Suite on HANA, and Business Warehouse on HANA), and Big Data solutions (for example, Apache Spark).

Flavor

e3

vCPU/memory ratio

1:12 | 1:14

vCPUs

28 - 208

Memory

348 - 2932GB

Maximum Intranet bandwidth

40Gbit/s

Hardware

Intel® Xeon® Skylake 6151
Intel® Xeon® Skylake 8176

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Disk-Intensive

This flavor is designed for applications that require sequential reading and writing to very large data sets in local disks (e.g., distributed Hadoop computing), as well as large-scale parallel data processing and log processing.

Scenarios:

  • Applications
    Disk-intensive ECS are suitable for applications that need to process large amounts of data requiring high IOPS (Input/Output operations Per Second) performance.
  • Application scenarios
    Potential applications include Big Data computing, network file systems, data processing, MapReduce, Hadoop, and other data-intensive computing scenarios.

Flavor

d2

vCPU/memory ratio

1:8 | 1:9

vCPUs

4 - 60

Memory

32 - 540GB

Maximum Intranet bandwidth

17 Gbit/s

Hardware

Intel® Xeon® Gold 6151

Disk capacity

1800GB
Maximum no. of disks: 60
Maximum throughput: 230MB/s
Access latency: Millisecond-level

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High Performance Computing

ECS for high-performance computing offer many CPU cores, a large memory capacity and a high data throughput.

Scenarios:

  • High-performance computers of the first ECS generation are suitable for applications that require numerous parallel computing resources and high-performance infrastructures, such as scientific computing.
  • For example, they can be used for computing and storage systems for genetic engineering, games, animation, biopharmaceuticals, and scientific computing.

Flavor

h|1 | h2

vCPU/memory ratio

1:8 | 1:16

vCPUs

16 - 32

Memory

128 - 256GB

Maximum intranet bandwidth

13 Gbit/s
(with standard network interface eth0)

Maximum RDMA bandwidth

100 Gbit/s
(RDMA network with EDR InfiniBand ib0)

Hardware

Intel® Xeon® E5-2667 v4
Intel® Xeon® Processor E5-2690 v4

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GPU Accelerated

The virtual machines of this flavor are equipped with graphics processors that are perfectly suited for floating point calculations. Therefore, they are especially useful for applications that require a very large number of simultaneous calculations.

Scenarios:

  • G series
    The virtual machines of this flavor are equipped with graphics processors that are perfectly suited for floating point calculations. Therefore, they are especially useful for applications that require a very large number of simultaneous calculations.
  • P series 
    Computing-accelerated or inference-accelerated ECSs, which are suitable for deep learning, scientific computing, and CAE.

Flavor

p1 | p2 | p2v | g6 | pi2

GPUs

Nvidia P100, V100, T4

vCPU/memory ratio

1:2 | 1:4 | 1:7 | 1:8

vCPUs

8 - 80

Memory

32 - 560GB

Maximum intranet bandwidth

30Gbit/s

Hardware

Intel® Xeon® Cascade Lake 6266
Intel® Xeon® Skylake-SP Gold 6151 v5
Intel® Xeon® Processor E5-2690 v4
Intel® Xeon® Skylake 6151 3.0 GHz
Intel® Xeon® Cascade Lake 6278 2.6 GHz

To the service description

Use Case: Scalable Internet Service

Requirements:

  • Simple configuration for CPU, memory, and disk space
  • Moderate bandwidth
  • Strong security and reliability
  • Minimal initial investment and maintenance costs

Example Scenarios:

Official websites | Website R&D and testing | Small-scale databases

Solution:

Use general computing ECSs, which provide a balance of computing, memory, and network resources. This ECS type is ideal for light- and medium-load applications.

General computing ECSs spread across web middleware and APP server, connecting Internet to the database.

New Features

ECS - Pi2 and s3 flavor in further availability zones available
View details
ECS - c4 and s3 flavor in all availability zones available
View details
ECS – new GPU flavor p2s available in EU-DE
View details
Coming soon

12/2021 - Boot disk encryption

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, 2021. 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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