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MRS-operation-guide-lts/api-ref/source/appendix/ecs_specifications_used_by_mrs.rst
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Reviewed-by: Kacur, Michal <michal.kacur@t-systems.com>
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ECS Specifications Used by MRS

MRS uses ECSs of the following types in different application scenarios.

Note

The ECS specifications available on MRS console vary by cluster version.

  • General computing (S2)
  • General computing (S3)
  • General computing-plus (C3)
  • General computing-plus (C4)
  • Disk-intensive (D2)

ECS Flavor Naming Rules

AB.C.D

Example: m3.8xlarge.8

In the preceding flavor:

  • A specifies the ECS type. For example, s indicates a general-purpose ECS, c a computing ECS, and m a memory-optimized ECS.
  • B specifies the type ID. For example, the 1 in s1 indicates a general-purpose first-generation ECS, and the 2 in s2 indicates a general-purpose second-generation ECS.
  • C specifies a flavor size and can be any of the following options: medium, large, and xlarge.
  • D specifies the ratio of memory to vCPUs expressed in a digit. For example, value 4 indicates that the ratio of memory to vCPUs is 4.

Specifications

Table 1 S2 ECS specifications
Type vCPUs Memory (GB) Flavor Virtualization Type
S2 16 32 s2.4xlarge.2.linux.mrs XEN
Table 2 S3 ECS specifications
Type vCPUs Memory (GB) Flavor Virtualization Type
S3 16 32 s3.4xlarge.2.linux.mrs XEN
Table 3 General computing-plus (C3) ECS specifications
Type vCPUs Memory (GB) Flavor Virtualization Type
C3 16 32 c3.4xlarge.2.linux.mrs KVM
Table 4 C4 ECS specifications
Type vCPUs Memory (GB) Flavor Virtualization Type
C4 4 16 c4.xlarge.4.linux.mrs KVM
16 64 c4.4xlarge.4.linux.mrs KVM
32 64 c4.8xlarge.2.linux.mrs KVM
Table 5 D2 ECS specifications
Type vCPUs Memory (GB) Flavor Virtualization Type Local Disk (GB) Hardware
D2 16 128 d2.4xlarge.8.linux.mrs KVM 8x1675

CPU: Intel® Xeon® Gold 6151 Processor v5

Memory: 20 x 32 GB
24 192 d2.6xlarge.8.linux.mrs KVM 12x1675
32 256 d2.8xlarge.8.linux.mrs KVM 16x1675