Machine types - EU02
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In the API, machine types define hardware configuration like CPUs, memory and storage capacity of computing instances. Individual adaptation of the system configurations (vCPU/RAM/OS storage) beyond the existing variants is not possible.
STACKIT will regularly check the necessity of changes to the system configuration and adjust the offer if necessary.
Ordered configurations of STACKIT instances remain in place even after any adjustments to the offer, but cannot be reordered if necessary. This means that in the event of an exemplary discontinuation of a machine type, e.g. c3i.1, existing VMs can continue to be used unchanged – but that new VMs can no longer be ordered with the machine type.
Machine type names
Section titled “Machine type names”Example of a machine type name: c3i.1
The first part of the name, e.g. “c3i.1”, is the variant of a machine type. Currently, there are the following variants:
| Variant | Description |
|---|---|
| t | Smaller instances with smaller CPU and less RAM |
| s | Processor-optimized instances with a CPU/RAM-ratio of 1:1 |
| c | Processor-optimized instances with a CPU/RAM-ratio of 1:2 |
| g | General instances with a CPU/RAM-ratio of 1:4 |
| m | Memory-optimized instances with a CPU/RAM-ratio of 1:8 |
| b | Large, memory-optimized instances with CPU/RAM-ratio of 1:16 or higher |
Machine type versions
Section titled “Machine type versions”The first number or number and letter combination in the name, e.g. “c3.1” & “c2a.8d” indicates the machine type version.
We currently offer the following versions:
| Type version | CPU architecture | Hardware specs |
|---|---|---|
| c3i.1g3i.1s3i.1 | Intel Emerald Rapids | The hypervisors are using Intel Emerald Rapids 8580 CPUs at a base clock of 2 GHz. |
| m3i.1b3i.1 | Intel Emerald Rapids | The hypervisors are using Intel Emerald Rapids 6548Y+ CPUs at a base clock of 2,5 GHz. |
| c2a.1dg2a.1d | AMD EPYC Bergamo | The hypervisors are using AMD EPYC Rome Bergamo 9754 CPUs at a base clock of 2,25 GHz. |
| m2a.1d | AMD EPYC Bergamo | The hypervisors are using AMD EPYC Bergamo 9754 CPUs at a base clock of 2,4 GHz. |
The second number in the name, e.g. “c3i.1”, stands for the amount of vCPU cores used in this machine type, this only applies to newer machine types.
Machine type indicators
Section titled “Machine type indicators”The letter after the core amount “c2a.1d” is an additional information for this machine type, “d” indicates that the machine type has a CPU without overcommit.
| Indicator | Description |
|---|---|
| d | instances without CPU overprovisioning |
Overview of currently available VM machine types (hardware configurations)
Section titled “Overview of currently available VM machine types (hardware configurations)”STACKIT offers a wide range of system configurations that meet customer needs. Below is a detailed overview of the respective configuration details in relation to vCPU and RAM:
Machine Type with CPU-overprovisioning Intel Gen3
Section titled “Machine Type with CPU-overprovisioning Intel Gen3”| Variant | Type description | Type names | vCPU | RAM in GB |
|---|---|---|---|---|
| t | Smaller instances with smaller CPU and less RAM | t3i.1 | 1 | 1 |
| s | Processor-optimized instances with a CPU/RAM-ratio of 1:1 | s3i.2 | 2 | 2 |
| s3i.4 | 4 | 4 | ||
| s3i.8 | 8 | 8 | ||
| s3i.16 | 16 | 16 | ||
| s3i.28 | 28 | 28 | ||
| s3i.56 | 56 | 56 | ||
| s3i.112 | 112 | 112 | ||
| c | Processor-optimized instances with a CPU/RAM-ratio of 1:2 | c3i.1 | 1 | 2 |
| c3i.2 | 2 | 4 | ||
| c3i.4 | 4 | 8 | ||
| c3i.8 | 8 | 16 | ||
| c3i.16 | 16 | 32 | ||
| c3i.28 | 28 | 59 | ||
| c3i.56 | 56 | 118 | ||
| c3i.112 | 112 | 236 | ||
| g | General instances with a CPU/RAM-ratio of 1:4 | g3i.1 | 1 | 4 |
| g3i.2 | 2 | 8 | ||
| g3i.4 | 4 | 16 | ||
| g3i.8 | 8 | 32 | ||
| g3i.16 | 16 | 59 | ||
| g3i.28 | 28 | 118 | ||
| g3i.56 | 56 | 236 | ||
| m | Memory-optimized instances with a CPU/RAM-ratio of 1:8 | m3i.1 | 1 | 8 |
| m3i.2 | 2 | 16 | ||
| m3i.4 | 4 | 32 | ||
| m3i.8 | 8 | 59 | ||
| m3i.16 | 16 | 118 | ||
| b | Large, memory-optimized instances with CPU/RAM-ratio of 1:16 | b3i.1 | 1 | 16 |
| b3i.2 | 2 | 32 | ||
| b3i.4 | 4 | 59 | ||
| b3i.8 | 8 | 118 | ||
| b3i.16 | 16 | 236 |
*vCPU steal time definition from Wikipedia: amount of time the operating system wanted to execute, but was not allowed to by the hypervisor.[1] This can happen if the physical hardware runs multiple guest operating systems and the hypervisor chooses to allocate a CPU time slot to another one.
Machine types without CPU-overprovisioning AMD Gen2
Section titled “Machine types without CPU-overprovisioning AMD Gen2”| Variant | Type description | Type names | vCPU | RAM in GB |
|---|---|---|---|---|
| c | Processor-optimized instances with a CPU/RAM-ratio of 1:2 | c2a.1d | 1 | 2 |
| c2a.2d | 2 | 4 | ||
| c2a.4d | 4 | 8 | ||
| c2a.8d | 8 | 16 | ||
| c2a.16d | 16 | 32 | ||
| c2a.30d | 30 | 60 | ||
| c2a.60d | 60 | 120 | ||
| c2a.120d | 120 | 240 | ||
| c2a.240d | 240 | 480 | ||
| g | General instances with a CPU/RAM-ratio of 1:4 | g2a.1d | 1 | 4 |
| g2a.2d | 2 | 8 | ||
| g2a.4d | 4 | 16 | ||
| g2a.8d | 8 | 32 | ||
| g2a.16d | 16 | 64 | ||
| g2a.30d | 30 | 120 | ||
| g2a.60d | 60 | 240 | ||
| g2a.120d | 120 | 480 | ||
| m | Memory-optimized instances with a CPU/RAM-ratio of 1:8 | m2a.1d | 1 | 8 |
| m2a.2d | 2 | 16 | ||
| m2a.4d | 4 | 32 | ||
| m2a.8d | 8 | 60 | ||
| m2a.16d | 16 | 120 | ||
| m2a.30d | 30 | 240 | ||
| m2a.60d | 60 | 480 | ||
| m2a.120d | 120 | 960 |