Updated on 2024-06-21 GMT+08:00

Large-Memory ECSs

Overview

Large-memory ECSs provide high compute, storage, and network performance. They are suitable for applications that require a large amount of memory, rapid data switching and processing, and low latency. Large-memory ECSs provide large memory and high computing, storage, and network performance.

Available now: E7

Table 1 Large-memory ECS features

Series

Compute

Disk Type

Network

E7

  • Memory: 960 GiB to 1,920 GiB
  • Number of vCPUs: 48 to 96
  • 3rd Generation Intel® Xeon® Scalable Processor
  • vCPU to memory ratio: 1:20
  • Basic/Turbo frequency: 2.6 GHz/3.4 GHz
  • Ultra-high I/O
  • General Purpose SSD
  • High I/O
  • Extreme SSD
  • Support for IPv6
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 10,000,000
  • Maximum intranet bandwidth: 44 Gbit/s
  • Single root I/O virtualization (SR-IOV) and Open vSwitch (OVS) work together to provide up to 10 Gbit/s bandwidth.

Large-Memory E7

Overview

Large-memory E7 ECSs use 3rd generation Intel® Xeon® Scalable processors to provide powerful and stable computing performance. By using 25GE high-speed intelligent NICs, E7 ECSs offer ultra-high network bandwidth and PPS.

Notes

For notes about using E7 ECSs, see Notes.

Scenarios

  • Online transaction processing (OLTP) and online analytical processing (OLAP) scenarios
  • SAP HANA in-memory databases, such as SAP Business Suite on HANA (SoH), SAP S/4HANA (S4H), SAP Business Warehouse on HANA (BWoH), and SAP BW/4HANA (B4H)
  • High-performance databases
  • Distributed cache
  • Big data processing engines and data mining applications

Specifications

Table 2 E7 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Bandwidth

(Gbit/s)

Max. PPS

(10,000)

Max. NIC Queues

Max. NICs

Max. Supplementary NICs

Virtualization

e7.12xlarge.20

48

960

30/20

550

16

8

1024

KVM

e7.24xlarge.20

96

1920

44/40

1000

32

8

2048

KVM

Notes

  • Large-memory ECSs do not support NIC hot swapping.
  • Affected by the memory loading speed, large-memory ECSs may take longer to start.
  • The primary and extension NICs of a large-memory ECS can only be used in the scenarios listed in Table 3.
    Table 3 Application scenarios of the NICs of a large-memory ECS

    NIC Type

    Application Scenario

    Remarks

    Primary NIC

    Vertical layer 3 communication

    N/A

    Extension NIC

    Horizontal layer 2 communication

    To improve network performance, you can set the MTU of an extension NIC to 8888.