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. T Cloud Public 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.

Reasons for ECS in T Cloud Public

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 T Cloud Public provided the best price-performance ratio among comparable providers.

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.

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Key Features of ECS

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High Quality

Reliability: Our Service Level Agreements (SLAs) guarantee 99.95% availability of the ECS service. The ability to run VMs in multiple spatially separated Availability Zones (AZs) makes it easy to minimize outages.
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.

ECS Statistics

2 regions
6 availability zones (AZs)
7 flavor groups
13 operating systems

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.

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.

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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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

General purpose VM’s provide a balanced ratio of CPU, Memory, and networking resources, making them ideal for a variety of diverse workloads. These instances are suitable for applications that use these resources in equal proportions, such as testing and development environments, small to medium databases and low to medium traffic web servers.

Scenarios:

Applications
S-Familiy VM’s are ideal for running Basic applications, lightweight web servers, and small databases that require minimal CPU, memory, and I/O resources.
Application scenarios
General purpose VM’s are among the most costeffective computing options available on T Cloud Public.

Flavor	s2 \| s3 \| s7n \| s9
vCPU/Memory Ratio	1:1 \| 1:2 \| 1:4
vCPUs	1 - 64
Memory	1 - 256GB
Hardware	Intel® Xeon® Skylake 6161 Intel® Xeon® Cascade Lake 6278 Intel® Xeon® Gold 6348 Intel® Xeon® 6969P

More details on the specifications

Dedicated General-purpose

Compute optimized VM’s are characterized by a high CPU-to-Memory ratio and are powered by highperformance processors, making them ideal for compute-intensive applications. These VM’s are optimized for powerful and stable computing performance combined with high network bandwidth with high PPS (packets per second).

Scenarios:

These VM’s excel in scenarios where CPU power is crucial, but extensive memory is not a primary need.
C-Familiy VM’s are a great fit for example for Web & Application servers handling significant traffic, Batch processing of large data volumes, Data analytics applications focused on rapid calculations and many more.

Flavor	c3 \| c4 \| c4ne \| c7n \| c9
vCPU/memory ratio	1:2 \| 1:4
vCPUs	2 - 64 \| 2 - 96 \| 2 - 192
Memory	4 - 376 \| 4 - 768 GB
Hardware	Intel® Xeon® Skylake 6151 Intel® Xeon® Cascade Lake 6266 Intel® Xeon® Gold 6348 Intel® Xeon® 6969P

More details on the specifications

Memory-optimized

Memory optimized VM’s and instances are designed with a high Memory-to-CPU ratio to deliver fast Performance for workloads that process large data sets in memory. These VM’s are optimized for powerful and stable computing performance combined with high network bandwidth with high PPS (packets per second).

Scenarios:

These VM’s excel in scenarios where fast and reliable Memory is crucial, together with high CPU power.
M-family VM’s are designed for workloads requiring a large memory footprint to efficiently manage Tasks such as simulations, large-scale scientific computations, or financial risk modeling.

Flavor	m3 \| m3n \| m4 \| m7n \| m9
vCPU/memory ratio	1:8 \| 1:16 \| 1:32
vCPUs	2 - 60 \| 2 - 96 \| 2 - 192
Memory	16 - 512 \| 16 - 768 GB \| 16 - 1504 GB
Hardware	Intel® Xeon® Skylake 6151 Intel® Xeon® Cascade Lake 6266 Intel® Xeon® Gold 6348 Intel® Xeon® 6969P

More details on the specifications

Large-Memory

Large memory VM’s are an extension of the Memory optimized M-Family, offering even higher Memory-toCPU ratios. These VM’s are designed for workloads that require both high single-threaded CPU performance and a large memory footprint.

Scenarios:

These VM’s excel in scenarios where fast and reliable Memory is crucial, together with high CPU power.
E-Family VM’s are ideal for e.g., EDA workloads, High-performance databases, Application performing In-memory analytics, which benefit from high-frequency CPUs and large Memory.

Flavor	e3 \| e6
vCPU/memory ratio	1:12 \| 1:14 \| 1:28
vCPUs	8 - 208
Memory	348 - 5896
Hardware	CPU: Intel® Xeon® Skylake 6151 CPU: Intel® Xeon® Skylake 8176 CPU: Intel® Xeon® Skylake 8280

More details on the specifications

Disk-intensive

Storage optimized instances are designed for workloads that require high-performance storage capabilities. These instances offer high disk throughput and IO, optimized for both sequential read & write access for large datasets.

Scenarios:

These VM’s deliver tens of thousands of low-latency, random I/O operations per second (IOPS) to applications.
D-family VM’s are equipped with high disk throughput and large local disk storage capacities and are a great fit for example for Big Data Applications, Database & File Servers or applications performing Video Editing and Rendering.

Flavor	d2
vCPU/memory ratio	1:8 \| 1:9
vCPUs	4 - 60
Memory	32 - 540
Maximum Intranet bandwidth	17Gbit/s
Hardware	Intel® Xeon® Gold 6151

More details on the specifications

Ultra-High I/O

Ultra-High I/O ECS use local high performance NVMe SSd to achieve high input/output performance (IOPS) with low read/write latency,

Scenarios:

High-performance databases, NoSql databases like Cassandra and MongoDB.
Efficient reading (data ingest) of enormous amounts of data

Flavor	i3 \| i3m
vCPU/memory ratio	1:4 \|1:8
vCPUs	8 - 64
Memory	32 - 512 \| 64 - 512
Hardware	Intel® Xeon® Cascade Lake 6266

More details on the specifications

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	p2v \| g6 \| pi2 \| p3 \| g7 \| pi5e \| p5s
GPUs	Nvidia V100, T4, A100, A40, L4, H100
vCPU/memory ratio	1:2 \| 1:4 \| 1:7 \| 1:8
vCPUs	8 - 80
Memory	32 - 768 GB
Hardware	Intel® Xeon® Cascade Lake 6266 Intel® Xeon® Skylake-SP Gold 6151 v5 Intel® Xeon® Skylake 6151 3.0 GHz Intel® Xeon® Skylake-SP Xeon Gold 6278C v5 Intel® Xeon® Cascade Lake 6278 2.6 GHz

More details on the specifications

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.

Graphical representation scenarios scalable internet service

New Features

11/19/2025ECS Memory-optimized m9 availableView Details

02/09/2026ECS general-purpose s9 availableView Details

03/05/2026ECS p5e (Nvidia H100) GPU flavors availableView Details

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*Voucher can be redeemed until 31 December 2026 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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We will answer any questions you have regarding testing, booking and usage – free and tailored to your needs. Try it out today!

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+800 33044770from abroad

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Elastic Cloud Server (ECS)

Reasons for ECS in T Cloud Public

Data protection

Highest performance

Flexibility

Key Features of ECS

High Quality

ECS Statistics

Cloud Service Integration

Transparency

Flexible Billing

BYOL

ECS Flavors Overview

Use Case: Scalable Internet Service

Requirements:

Example Scenarios:

Solution:

Find out more

Pricing overview

Documentation

Tutorials

Book now and claim 250 € starting credit*

Take advantage of our consulting services!Our experts will be happy to help you.

Take advantage of our consulting services!
Our experts will be happy to help you.