This topic describes the features of ECS instance families with local SSDs and lists the instance types of each family.

Overview

Instances with local SSDs provide high I/O performance. They are suitable for scenarios that impose high demands on storage I/O performance and high availability architecture at the application level. For example, they are suitable for NoSQL databases, massively parallel processing (MPP) data warehouses, and distributed file systems.

Instances with local SSDs are suitable for enterprises that provide online services such as online gaming, e-commerce, live video streaming, and media. Instances with local SSDs can satisfy the high requirements of I/O-intensive applications that require low latency and high I/O performance of block storage.

Instances with local SSDs have the following features:
  • Provide up to hundreds of thousands of low latency random read/write IOPS for large databases.
  • Offer a maximum throughput of several gibibytes per second for sequential read/write operations in big data, parallel computing, and other large dataset scenarios.
  • Use local NVMe SSDs to deliver hundreds of thousands of random read/write IOPS with only several microseconds of latency.
When you use instances with local SSDs, take note of the following items:
  • Instances with local SSDs do not support changes in instance types, bandwidth, and billing methods, and do not support failover.
  • The associations of instances to local disks are fixed. The number and capacity of local disks of an instance are based on the instance type. Instances with local SSDs are bound to their local disks. You cannot attach additional local disks to these instances or detach local disks from these instances and attach the disks to another instance.
  • You cannot create snapshots for local disks. If you need to create an image for the system disk and data disks of an instance with local SSDs, we recommend that you create an image by using the snapshots of both the system disk and data disks (data disks must be non-local disks).
  • You cannot create images that contain system disks and data disks based on instance IDs.
  • You can attach a standard SSD to an instance with local SSDs. The capacity of the standard SSD is scalable.
  • Local disks are attached to a single physical server, which increases the risk of single point of failure (SPOF). The reliability of data stored on local disks depends on the reliability of the physical server.
    Warning For example, data stored on local disks may be lost when a hardware failure occurs. We recommend that you do not use local disks for long-term data storage.
    • To ensure data availability, we recommend that you implement data redundancy at the application layer. You can use deployment sets to distribute ECS instances across multiple physical machines to achieve high availability and disaster recovery. For more information, see Create a deployment set.
    • If your applications do not have data reliability architecture, we recommend that you use cloud disks or the backup service in your ECS instances for data reliability. For more information, see Disk overview or What is Hybrid Backup Recovery?.
  • Operations on an instance with local SSDs may affect the data stored on the local disks. For more information, see Impacts of instance operations on the data stored on local disks.

i2, instance family with local SSDs

Features
  • I/O optimized.
  • Supports standard SSDs and ultra disks.
  • Attached with high-performance local NVMe SSDs that feature high IOPS, high I/O throughput, and low latency.
  • Offers a CPU-to-memory ratio of 1:8, which is designed for high-performance databases.
  • Equipped with 2.5 GHz Intel ® Xeon ® Platinum 8163 (Skylake) processors.
  • Provides a fast and reliable network based on large computing capacity.
  • Scenarios:
    • Online transaction processing (OLTP) and high-performance relational databases
    • NoSQL databases such as Cassandra, MongoDB, and HBase
    • Search scenarios that use solutions such as Elasticsearch
Instance types
Instance type vCPU Memory (GiB) Local storage (GiB) Bandwidth (Gbit/s) Packet forwarding rate (Kpps) IPv6 support NIC queues ENIs (including one primary ENI) Private IP addresses per ENI Disk bandwidth (Gbit/s)
ecs.i2.xlarge 4 32.0 1 × 894 1.0 500 Yes 2 3 10 Up to 16
ecs.i2.2xlarge 8 64.0 1 × 1,788 2.0 1,000 Yes 2 4 10 Up to 16
ecs.i2.4xlarge 16 128.0 2 × 1,788 3.0 1,500 Yes 4 8 20 Up to 16
ecs.i2.8xlarge 32 256.0 4 × 1,788 6.0 2,000 Yes 8 8 20 Up to 16
ecs.i2.16xlarge 64 512.0 8 × 1,788 10.0 4,000 Yes 16 8 20 Up to 16
ecs.i2d.21xlarge 84 712.0 4 × 3,570 25.0 4,000 Yes 32 16 20 Up to 16
Note

i2g, instance family with local SSDs

Features
  • I/O optimized.
  • Supports standard SSDs and ultra disks.
  • Attached with high-performance local NVMe SSDs that feature high IOPS, high I/O throughput, and low latency.
  • Offers a CPU-to-memory ratio of 1:4, which is designed for high-performance databases.
  • Equipped with 2.5 GHz Intel ® Xeon ® Platinum 8163 (Skylake) processors.
  • Provides a fast and reliable network based on large computing capacity.
  • Scenarios:
    • OLTP and high-performance relational databases
    • NoSQL databases such as Cassandra, MongoDB, and HBase
    • Search scenarios that use solutions such as Elasticsearch
Instance types
Instance type vCPU Memory (GiB) Local storage (GiB) Bandwidth (Gbit/s) Packet forwarding rate (Kpps) IPv6 support NIC queues ENIs (including one primary ENI) Private IP addresses per ENI
ecs.i2g.2xlarge 8 32.0 1 × 894 2.0 1,000 No 2 4 10
ecs.i2g.4xlarge 16 64.0 1 × 1,788 3.0 1,500 No 4 8 20
ecs.i2g.8xlarge 32 128.0 2 × 1,788 6.0 2,000 No 8 8 20
ecs.i2g.16xlarge 64 256.0 4 × 1,788 10.0 4,000 No 16 8 20
Note

i2ne, instance family with local SSDs

i2ne is in invitational preview. To use i2ne, submit a ticket.

Features
  • I/O optimized.
  • Supports standard SSDs and ultra disks.
  • Attached with high-performance local NVMe SSDs that feature high IOPS, high I/O throughput, and low latency.
  • Provides a bandwidth of up to 20 Gbit/s.
  • Offers a CPU-to-memory ratio of 1:8, which is designed for high-performance databases.
  • Equipped with 2.5 GHz Intel ® Xeon ® Platinum 8163 (Skylake) processors.
  • Provides a fast and reliable network based on large computing capacity.
  • Scenarios:
    • OLTP and high-performance relational databases
    • NoSQL databases such as Cassandra, MongoDB, and HBase
    • Search scenarios that use solutions such as Elasticsearch
Instance types
Instance type vCPU Memory (GiB) Local storage (GiB) Bandwidth (Gbit/s) Packet forwarding rate (Kpps) IPv6 support NIC queues ENIs (including one primary ENI) Private IP addresses per ENI Disk bandwidth (Gbit/s)
ecs.i2ne.xlarge 4 32.0 1 × 894 1.5 500 Yes 2 3 10 Up to 16
ecs.i2ne.2xlarge 8 64.0 1 × 1,788 2.5 1,000 Yes 2 4 10 Up to 16
ecs.i2ne.4xlarge 16 128.0 2 × 1,788 5.0 1,500 Yes 4 8 20 Up to 16
ecs.i2ne.8xlarge 32 256.0 4 × 1,788 10.0 2,000 Yes 8 8 20 Up to 16
ecs.i2ne.16xlarge 64 512.0 8 × 1,788 20.0 4,000 Yes 16 8 20 Up to 16
Note

i2gne, instance family with local SSDs

i2gne is in invitational preview. To use i2gne, submit a ticket.

Features
  • I/O optimized.
  • Supports standard SSDs and ultra disks.
  • Attached with high-performance local NVMe SSDs that feature high IOPS, high I/O throughput, and low latency.
  • Provides a bandwidth of up to 20 Gbit/s.
  • Offers a CPU-to-memory ratio of 1:4, which is designed for high-performance databases.
  • Equipped with 2.5 GHz Intel ® Xeon ® Platinum 8163 (Skylake) processors.
  • Provides a fast and reliable network based on large computing capacity.
  • Scenarios:
    • OLTP and high-performance relational databases
    • NoSQL databases such as Cassandra, MongoDB, and HBase
    • Search scenarios that use solutions such as Elasticsearch
Instance types
Instance type vCPU Memory (GiB) Local storage (GiB) Bandwidth (Gbit/s) Packet forwarding rate (Kpps) IPv6 support NIC queues ENIs (including one primary ENI) Private IP addresses per ENI
ecs.i2gne.2xlarge 8 32.0 1 × 894 2.5 1,000 No 2 4 10
ecs.i2gne.4xlarge 16 64.0 1 × 1,788 5.0 1,500 No 4 8 20
ecs.i2gne.8xlarge 32 128.0 2 × 1,788 10.0 2,000 No 8 8 20
ecs.i2gne.16xlarge 64 256.0 4 × 1,788 20.0 4,000 No 16 8 20
Note

i1, instance family with local SSDs

Features
  • I/O optimized.
  • Supports standard SSDs and ultra disks.
  • Attached with high-performance local NVMe SSDs that feature high IOPS, high I/O throughput, and low latency.
  • Offers a CPU-to-memory ratio of 1:4, which is designed for high-performance databases.
  • Equipped with 2.5 GHz Intel ® Xeon ® E5-2682 v4 (Broadwell) processors.
  • Provides a fast and reliable network based on large computing capacity.
  • Scenarios:
    • OLTP and high-performance relational databases
    • NoSQL databases such as Cassandra and MongoDB
    • Search scenarios that use solutions such as Elasticsearch
Instance types
Instance type vCPU Memory (GiB) Local storage (GiB) Bandwidth (Gbit/s) Packet forwarding rate (Kpps) IPv6 support NIC queues ENIs (including one primary ENI) Private IP addresses per ENI
ecs.i1.xlarge 4 16.0 2 × 104 0.8 200 No 1 3 10
ecs.i1.2xlarge 8 32.0 2 × 208 1.5 400 No 1 4 10
ecs.i1.3xlarge 12 48.0 2 × 312 2.0 400 No 1 6 10
ecs.i1.4xlarge 16 64.0 2 × 416 3.0 500 No 2 8 20
ecs.i1-c5d1.4xlarge 16 64.0 2 × 1,456 3.0 400 No 2 8 20
ecs.i1.6xlarge 24 96.0 2 × 624 4.5 600 No 2 8 20
ecs.i1.8xlarge 32 128.0 2 × 832 6.0 800 No 3 8 20
ecs.i1-c10d1.8xlarge 32 128.0 2 × 1,456 6.0 800 No 3 8 20
ecs.i1.14xlarge 56 224.0 2 × 1,456 10.0 1,200 No 4 8 20
Note