Updated on 2024-03-08 GMT+08:00

Large-Memory ECSs

Overview

Large-memory ECSs provide an even larger amount of memory than memory-optimized ECSs. They are used for applications that require a large amount of memory, rapid data switching, low latency, and capability of processing large volumes of data. Large-memory ECSs provide large memory and high computing, storage, and network performance.

Available now: E7, E6, and E3

Table 1 Large-memory ECS features

Type

Compute

Disk Type

Network

E7

  • vCPU to memory ratio: 1:20 or 1:21
  • Number of vCPUs: 48 to 384
  • 3rd Generation Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 2.6 GHz/3.5 GHz (vCPU to memory ratio: 1:20)
  • Basic/Turbo frequency: 2.1 GHz/3.8 GHz (vCPU to memory ratio: 1:21)
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Support for IPv6
  • Ultra-high packets per second (PPS) throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 30 million PPS
  • Maximum intranet bandwidth: 100 Gbit/s

E6

  • vCPU to memory ratio: 1:28
  • Number of vCPUs: 104 to 208
  • 2nd Generation Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 2.7 GHz/4.0 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 10,000,000
  • Maximum intranet bandwidth: 40 Gbit/s

E3

  • vCPU to memory ratio: 1:12, 1:14, or 1:20
  • Number of vCPUs: 28 to 208
  • Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 3.0 GHz/3.4 GHz (vCPU to memory ratio: 1:12)
  • Basic/Turbo frequency: 2.1 GHz/3.8 GHz (vCPU to memory ratio: 1:14 or 1:20)
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 10,000,000
  • Maximum intranet bandwidth: 40 Gbit/s

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

e7.48xlarge.21

192

4032

50/40

1500

16

8

1024

KVM

e7.96xlarge.21

394

8064

100/90

3000

32

8

2048

KVM

Large-memory E6

Overview

E6 ECSs use second-generation Intel® Xeon® Scalable processors to provide powerful and stable computing performance. By using 25GE high-speed intelligent NICs, E6 ECSs offer ultra-high network bandwidth and PPS. They also provide up to 5,896 GiB of memory size for large memory intensive applications.

Notes

For notes about using E6 ECSs, see Notes.

Application Scenarios

  • OLTP and 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 3 E6 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Bandwidth

(Gbit/s)

Max. PPS

(10,000)

Max. NIC Queues

Max. NICs

Virtualization

e6.26xlarge.28

104

2948

30/20

550

16

8

KVM

e6.52xlarge.28

208

5896

40/40

1,000

32

8

KVM

Large-Memory E3 ECSs

Overview

Large-memory E3 ECSs use Intel® Xeon® Scalable processors to provide powerful and stable computing performance. By using 25GE high-speed intelligent NICs, E3 ECSs offer ultra-high network bandwidth and PPS.

Notes

For notes about using E3 ECSs, see Notes.

Scenarios

  • OLTP and 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 4 E3 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Bandwidth

(Gbit/s)

Max. PPS

(10,000)

Max. NIC Queues

Max. NICs

Virtualization

e3.7xlarge.12

28

348

25/12

280

8

8

KVM

e3.14xlarge.12

56

696

25/25

550

16

8

KVM

e3.26xlarge.14

104

1466

30/20

550

16

8

KVM

e3.52xlarge.14

208

2932

40/40

1,000

32

8

KVM

e3.52xlarge.20

208

4096

40/40

1,000

32

8

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 5.
    Table 5 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.

  • An ECS can have a maximum of 60 attached disks, including the system disk. For details about constraints, see Can I Attach Multiple Disks to an ECS?

    For example, an E3 ECS can have one system disk and 59 EVS disks.

    An existing large-memory ECS can have a maximum of 40 attached disks (including the system disk). To attach 60 disks, enable advanced disk. For details, see Enabling Advanced Disk.