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Elastic Compute Service

X86 Computing

Compute-optimized

Overview

The processor-to-memory ratio of a Compute-optimized instance is typically 1:2, offering reliable and stable computing performance. It is applicable for compute-intensive applications such as batch processing workloads and distributed analysis. This topic describes the features, metric data, and applicable scenarios of each instance family of Compute-optimized instances. By referring to this topic, you can select an instance type that meets your business needs. This helps you ensure that the selected type meets the minimum CPU and memory requirements for your business.

warning

For information about instance types, estimated instance fees, instance type changes, and instance naming rules, refer to Instance types and specifications.

Specification/type	Description
Compute-optimized c4i	The latest generation of Compute-optimized instances. This generation offers higher computing performance and is applicable for more scenarios.
Compute-optimized c4ie
Compute-optimized c3il
Compute-optimized c4al
Compute-optimized c4als
Compute-optimized c4ale
Compute-optimized c3il	The 3rd-generation Compute-optimized instances. This generation is applicable for compute-intensive applications such as batch processing workloads and distributed analysis.
Compute-optimized c3al
Compute-optimized c3i	The 3rd-generation Compute-optimized instances. They are of the Self-Developed Hardware-Software Co-Designed Virtualization Architecture. The network and storage I/O performance is significantly improved compared with the 2nd generation.
Compute-optimized c3a
Compute Balance-enhanced c1ie	This type offers reliable and stable computing performance. It is applicable for compute-intensive applications such as batch processing workloads and distributed analysis.

Compute-optimized c4i

Features

Type	Performance
Computing	Processor: the 6th-generation Intel® Xeon® Scalable processor (Granite Rapids) with a processor base frequency of 2.8 GHz and a maximum all-core turbo frequency of 3.3 GHz. The processor-to-memory ratio is 1:2. Max.: 240 vCPUs
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 65 volumes (including 1 system volume) can be mounted. Small and medium-sized instances have burstable storage performance. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Maximum network bandwidth: 64 Gbit/s Maximum throughput: 24,000,000 PPS Small and medium-sized instances have burstable network performance. Jumbo Frame is supported. Learn more The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Web front-end servers

Data analysis and computing

Small and medium-sized database systems, caches, and clusters for searching

High-definition video transcoding

Instance types and metrics

tip

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Small and medium-sized instances have burstable storage and network performance. See the details in the following table. "--" indicates that performance burst is not supported for the current instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, base/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface (primary network interface)	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit: 10,000)	Volume bandwidth (basic/burst, Gbit/s)	Volumes (including 1 system volume)
ecs.c4i.large	2	4	2.5/max. 10	130	40	2	3	6	2/max. 6	1.5/max. 8	9
ecs.c4i.xlarge	4	8	4/max. 10	140	40	4	4	15	4/max. 6	2/max. 8	9
ecs.c4i.2xlarge	8	16	6/max. 10	160	40	8	4	15	5/max. 8	3/max. 8	17
ecs.c4i.4xlarge	16	32	10/max. 15	300	40	16	8	30	8/max. 10	5/max. 8	17
ecs.c4i.8xlarge	32	64	16/max. 20	400	60	32	8	30	10/--	8/--	25
ecs.c4i.12xlarge	48	96	18/max. 20	500	70	48	8	30	12/--	10/--	33
ecs.c4i.16xlarge	64	128	20/--	600	80	64	8	30	16/--	12/--	33
ecs.c4i.20xlarge	80	192	24/--	800	100	64	10	30	20/--	15/--	33
ecs.c4i.40xlarge	160	384	40/--	1,600	200	64	15	30	32/--	24/--	65
ecs.c4i.60xlarge	240	576	64/--	2,400	400	64	15	50	40/--	32/--	65

Compute-optimized c4ie

Features

Type	Performance
Computing	Processor: the 6th-generation Intel® Xeon® Scalable processor (Granite Rapids) with a processor base frequency of 3.2 GHz and a maximum all-core turbo frequency of 3.6 GHz. The processor-to-memory ratio is 1:2. Max.: 192 vCPUs
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 65 volumes (including 1 system volume) can be mounted. Small and medium-sized instances have burstable storage performance. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Maximum network bandwidth: 64 Gbit/s Maximum throughput: 24,000,000 PPS Small and medium-sized instances have burstable network performance. Jumbo Frame is supported. Learn more The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Web front-end servers

Data analysis and computing

Small and medium-sized database systems, caches, and clusters for searching

High-definition video transcoding

Instance types and metrics

tip

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Small and medium-sized instances have burstable storage and network performance. See the details in the following table. "--" indicates that performance burst is not supported for the current instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface (primary network interface)	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit: 10,000)	Volume bandwidth (basic/burst, Gbit/s)	Volumes (including 1 system volume)
ecs.c4ie.large	2	4	2.5/max. 15	130	50	2	3	6	2.5/max. 10	2/max. 10	9
ecs.c4ie.xlarge	4	8	4/max. 15	140	50	4	4	15	5/max. 10	2.5/max. 10	9
ecs.c4ie.2xlarge	8	16	6/max. 15	160	50	8	4	15	6/max. 10	4/max. 10	17
ecs.c4ie.4xlarge	16	32	12/max. 25	300	50	16	8	30	10/max. 20	6/max. 10	17
ecs.c4ie.8xlarge	32	64	20/max. 32	600	80	32	8	30	20/max. 30	10/max. 12	25

Compute-optimized c3il

Features

Type	Performance
Computing	Processor: the 6th-generation Intel® Xeon® Scalable processor (Granite Rapids) with a processor base frequency of 2.8 GHz and a maximum all-core turbo frequency of 3.3 GHz. The processor-to-memory ratio is 1:2. If you need an instance that can provide higher computing resources, please contact the account manager.
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 65 volumes (including 1 system volume) can be mounted. Small and medium-sized instances have burstable storage performance. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Small and medium-sized instances have burstable network performance. Jumbo Frame is supported. Learn more The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Web front-end servers

Data analysis and computing

Small and medium-sized database systems, caches, and clusters for searching

High-definition video transcoding

Instance types and metrics

tip

Small and medium-sized instances have burstable storage and network performance. See the details in the following table. "--" indicates that performance burst is not supported for the current instance type.

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit: 10,000)	Volume bandwidth (basic, Gbit/s)	Volumes (including 1 system volume)
ecs.c4il.large	2	4	3/max. 12	130	50	2	3	6	3/max. 15	3/max. 12	9
ecs.c4il.xlarge	4	8	5/max. 15	140	50	4	4	15	5/max. 20	4/max. 20	9
ecs.c4il.2xlarge	8	16	8/max. 20	170	50	8	4	15	6/max. 20	6/max. 20	17
ecs.c4il.4xlarge	16	32	15/max. 30	300	50	16	8	30	10/max. 20	8/max. 20	17
ecs.c4il.8xlarge	32	64	25/max. 35	400	100	32	8	30	20/--	10/max. 20	25
ecs.c4il.12xlarge	48	96	35/--	500	160	48	8	30	25/--	12/max. 20	33
ecs.c4il.16xlarge	64	128	40/--	600	200	64	8	30	35/--	20/--	33
ecs.c4il.20xlarge	80	160	45/--	750	250	64	10	30	40/--	24/--	33
ecs.c4il.40xlarge	160	320	90/--	1,500	500	64	15	30	80/--	48/--	65

Compute-optimized c4al

tip

For this instance, you can use Windows and other images. For details, refer to Instructions on compatibility between AMD instance types and operating systems.

Features

Type	Performance
Computing	Processor: the 5th-generation AMD EPYC™️ Turin processor with a single-core turbo frequency of 4.1 GHz. The processor-to-memory ratio is 1:2. Max.: 192 vCPUs, 384 GiB If you need an instance that can provide higher computing resources, please contact the account manager.
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 31 volumes (including 1 system volume) can be mounted. Small and medium-sized instances have burstable storage performance. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Maximum network bandwidth: 100 Gbit/s Maximum throughput: 16,000,000 PPS Small and medium-sized instances have burstable network performance. Jumbo Frame is supported. Learn more The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Web front-end servers

Data analysis and computing

Small and medium-sized database systems, caches, and clusters for searching

High-definition video transcoding

Instance types and metrics

tip

Small and medium-sized instances have burstable storage and network performance. See the details in the following table. "--" indicates that performance burst is not supported for the current instance type.

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit: 10,000)	Volume bandwidth (basic/burst, Gbit/s)	Volumes (including 1 system volume)
ecs.c4al.large	2	4	2/max. 15	130	30	2	4	6	2.5/max. 10	1.5/max. 10	7
ecs.c4al.xlarge	4	8	3.5/max. 15	140	50	4	4	15	3.5/max. 10	2.5/max. 10	9
ecs.c4al.2xlarge	8	16	6/max. 15	160	60	8	4	15	5/max. 10	3.5/max. 10	17
ecs.c4al.4xlarge	16	32	10/max. 15	200	80	16	6	30	8/max. 16	5/max. 12	17
ecs.c4al.8xlarge	32	64	20/max. 30	300	100	24	8	30	10/max. 16	6/max. 12	25
ecs.c4al.12xlarge	48	96	25/max. 30	400	120	32	8	30	12/max. 16	8/max. 12	31
ecs.c4al.16xlarge	64	128	34/max. 40	520	160	48	8	30	16/--	10/max. 12	31
ecs.c4al.24xlarge	96	192	50/--	800	240	64	8	30	24/--	12/--	31
ecs.c4al.32xlarge	128	256	68/--	1,000	320	64	15	30	32/--	20/--	31
ecs.c4al.48xlarge	192	384	100/--	1,600	480	64	15	30	48/--	32/--	31

Compute-optimized c4als

tip

Only supported in China (Beijing) and China (Shanghai) regions.

For this instance, you can use Windows and other images. For details, refer to Instructions on compatibility between AMD instance types and operating systems.

Features

Type	Performance
Computing	Processor: the 5th-generation AMD EPYC Turin dense platform, with a maximum single-core turbo frequency of 3.7 GHz. The processor-to-memory ratio is 1:2.
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 31 volumes (including 1 system volume) can be mounted. Small and medium-sized instances have burstable storage performance. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Small and medium-sized instances have burstable network performance. Jumbo Frame is supported. Learn more The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Web front-end servers

Data analysis and computing

Small and medium-sized database systems, caches, and clusters for searching

High-definition video transcoding

Instance types and metrics

tip

Small and medium-sized instances have burstable storage and network performance. See the details in the following table. "--" indicates that performance burst is not supported for the current instance type.

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit: 10,000)	Volume bandwidth (basic/burst, Gbit/s)	Volumes (including 1 system volume)
ecs.c4als.large	2	4	2/max. 12.5	100	25	2	4	6	2.5/max. 11	1.2/max.10	6
ecs.c4als.xlarge	4	8	3.5/max. 12.5	120	25	4	4	15	3.5/max. 11	1.6/max. 10	9
ecs.c4als.2xlarge	8	16	6/max. 12.5	140	30	8	4	15	4/max. 11	2/max. 10	17
ecs.c4als.4xlarge	16	32	9/max. 12.5	200	40	16	6	30	5/max. 11	4/max. 10	17
ecs.c4als.8xlarge	32	64	13/max. 25	220	60	32	8	30	6/max. 11	5/max. 10	25
ecs.c4als.12xlarge	48	96	15/max. 25	260	75	32	8	30	7/max. 11	6.5/max. 10	31
ecs.c4als.16xlarge	64	128	20/max. 25	340	100	48	8	30	10/max. 11	8/max. 10	31
ecs.c4als.32xlarge	128	256	40/--	650	200	48	12	30	20/--	16/--	31

Compute-optimized c4ale

tip

Only supported in China (Beijing) and China (Shanghai) regions.

For this instance, you can use Windows and other images. For details, refer to Instructions on compatibility between AMD instance types and operating systems.

Features

Type	Performance
Compute	Processor: the 5th-generation AMD EPYC Turin dense platform, featuring a physical core design, providing stable computing power, with a maximum single-core turbo frequency of 3.7 GHz. The processor-to-memory ratio is 1:2. If you need an instance that can provide higher computing resources, please contact the account manager.
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 31 volumes (including 1 system volume) can be mounted. Small and medium-sized instances have burstable storage performance. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Small and medium-sized instances have burstable network performance. Jumbo Frame is supported. Learn more The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Web front-end servers

Data analysis and computing

Small and medium-sized database systems, caches, and clusters for searching

High-definition video transcoding

Instance types and metrics

tip

Small and medium-sized instances have burstable storage and network performance. See the details in the following table. "--" indicates that performance burst is not supported for the current instance type.

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit: 10,000)	Volume bandwidth (basic/burst, Gbit/s)	Volumes (including 1 system volume)
ecs.c4ale.large	2	4	3.5/max. 25	120	Max. 500,000	2	4	15	3.5/max. 20	2.5/max. 20	6
ecs.c4ale.xlarge	4	8	6/max. 25	140	Max. 500,000	4	4	15	4/max. 20	3/max. 20	9
ecs.c4ale.2xlarge	8	16	9/max. 25	200	Max. 500,000	8	6	30	5/max. 20	4/max. 20	17
ecs.c4ale.4xlarge	16	32	13/max. 25	220	60	16	8	30	6/max. 20	5.5/max. 20	17
ecs.c4ale.8xlarge	32	64	20/max. 25	340	100	32	8	30	10/max. 20	8/max. 20	25
ecs.c4ale.12xlarge	48	96	30	520	150	48	8	30	15/max. 20	13/max. 20	31
ecs.c4ale.16xlarge	64	128	40	650	200	64	12	30	20	16/max. 20	31
ecs.c4ale.32xlarge	128	256	64	1,400	400	64	15	30	40	32	31

Compute-optimized c3il

tip

For this instance, you can use Windows, Linux, or veLinux images.

This instance type family has good compatibility with drivers and does not heavily rely on Virtio1.1 drivers.

Features

Type	Performance
Computing	Processor: the 4th-generation Intel® Xeon® Scalable processor (Sapphire Rapids) or the 5th-generation Intel® Xeon® Scalable processor (Emerald Rapids), with a processor base frequency of 2.6 GHz and a maximum all-core turbo frequency of 3.1 GHz. The processor-to-memory ratio is 1:2. If you need an instance that can provide higher computing resources, please contact the account manager.
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 16 volumes (including 1 system volume) can be mounted. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Small and medium-sized instances have burstable network performance. The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Web front-end servers

Game servers

Data analysis, batch computing, video encoding/decoding

AI inference applications

Instance types and metrics

tip

Small and medium-sized instances have burstable network performance. See details in the following table. "--" indicates that performance burst is not supported for the current instance type.

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (unit: 10,000)	Volume bandwidth (Gbit/s)	Volumes (including 1 system volume)
ecs.c3il.large	2	4	2/max. 3	30	25	2	3	6	1	1.5	9
ecs.c3il.xlarge	4	8	3/max. 5	50	25	4	4	15	2	2	9
ecs.c3il.2xlarge	8	16	4/max. 6	60	25	8	4	15	3	3	16
ecs.c3il.4xlarge	16	32	5/max. 10	100	60	8	8	30	4	5	16
ecs.c3il.8xlarge	32	64	10/--	180	120	16	8	30	8	6	16
ecs.c3il.12xlarge	48	96	13/--	250	180	16	8	30	12	8	16
ecs.c3il.16xlarge	64	128	18/--	350	240	32	8	30	17	10	16
ecs.c3il.23xlarge	90	216	27/--	500	300	32	8	30	19	13	16
ecs.c3il.29xlarge	114	228	27/--	500	300	32	8	30	19	13	16

Compute-optimized c3al

tip

For this instance, you can use Windows and other images. For details, refer to Instructions on compatibility between AMD instance types and operating systems.

This instance has good compatibility with drivers and does not rely on Virtio1.1 drivers.

Features

Type	Performance
Computing	Processor: the 4th-generation AMD EPYC™️ Genoa processor with a processor base frequency of 2.6 GHz and a turbo frequency of 3.7 GHz. The processor-to-memory ratio is 1:2. If you need an instance that can provide higher computing resources, please contact the account manager.
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 16 volumes (including 1 system volume) can be mounted. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Small and medium-sized instances have burstable network performance. The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Web front-end servers

Data analysis and computing

Small and medium-sized database systems, caches, and clusters for searching

High-definition video transcoding

Instance types and metrics

tip

Small and medium-sized instances have burstable network performance. See details in the following table. "--" indicates that performance burst is not supported for the current instance type.

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit:10,000)	Volume bandwidth (basic/burst, Gbit/s)	Volumes (including 1 system volume)
ecs.c3al.large	2	4	1.5/max. 6	60	25	2	3	6	1/max. 4	1/max. 4	5
ecs.c3al.xlarge	4	8	2.5/max. 6	90	25	4	3	15	1.5/max. 4	1.5/max. 5	9
ecs.c3al.2xlarge	8	16	4/max. 10	100	25	8	3	15	2/max. 6	2/max. 5	16
ecs.c3al.4xlarge	16	32	7/max. 10	120	30	16	6	30	3/max. 6	3/max. 5	16
ecs.c3al.8xlarge	32	64	10/max. 12	180	40	24	6	30	4/max. 6	3.5/max. 5	16
ecs.c3al.12xlarge	48	96	12/max. 15	200	50	32	8	30	5/max. 6	4/max. 5	16
ecs.c3al.16xlarge	64	128	15/--	270	70	48	8	30	7/--	5/--	16
ecs.c3al.23xlarge	92	184	22/--	400	100	64	8	30	10/--	8/--	16
ecs.c3al.32xlarge	128	256	30/--	550	140	64	8	30	14/--	10/--	16

Compute-optimized c3i

tip

For this instance family, you can not use Windows images.

If you want to use ecs.c3i.48xlarge or ecs.c3i.60xlarge, please contact your account manager to apply.

Features

Type	Performance
Computing	Processor: the 4th-generation Intel® Xeon® Scalable processor (Sapphire Rapids) or the 5th-generation Intel® Xeon® Scalable processor (Emerald Rapids), with a processor base frequency of 2.6 GHz and a maximum all-core turbo frequency of 3.1 GHz. The processor-to-memory ratio is 1:2. Max.: 240 vCPUs, 480 GiB
Storage	You can use ESSD volumes. A maximum of 16 volumes (including 1 system volume) can be mounted. Small and medium-sized instances have burstable storage I/O performance. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Maximum network bandwidth: 96 Gbit/s Maximum throughput: 36,000,000 PPS Small and medium-sized instances have burstable network performance. The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Compute-intensive scenarios such as data analysis, batch computing, video encoding/decoding, video rendering, and high-performance scientific and engineering applications.

General-purpose applications such as MySQL database, Redis database, Nginx, and middleware MQ.

Scenarios with high maximum throughput requirements, such as video barrage and telecom service forwarding.

AI inference and training. This instance family is applicable for small and medium-sized deep-learning and training models and can enhance the deep-learning and training performance on CPUs.

Instance types and metrics

tip

Small and medium-sized instances have burstable storage and network performance. See details in the following table. "--" indicates that performance burst is not supported for the current instance type.

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance specification	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit: 10,000)	Volume bandwidth (basic/burst, Gbit/s)	Volumes (including 1 system volume)
ecs.c3i.large	2	4	2.5/max. 12	130	Max. 30	2	3	6	1.5/max. 6	1.5/max. 6	9
ecs.c3i.xlarge	4	8	4/max. 12	140	Max. 30	4	4	15	3/max. 6	2/max. 6	9
ecs.c3i.2xlarge	8	16	6/max. 12	160	Max. 30	8	4	15	4/max. 8	3/max. 6	16
ecs.c3i.4xlarge	16	32	12/max. 30	300	50	8	8	30	6/max. 8	5/max. 6	16
ecs.c3i.8xlarge	32	64	24/max. 30	600	100	16	8	30	10/--	6/--	16
ecs.c3i.12xlarge	48	96	36/--	900	150	16	8	30	15/--	8/--	16
ecs.c3i.16xlarge	64	128	42/--	1,200	200	32	8	30	20/--	10/--	16
ecs.c3i.24xlarge	96	192	64/--	1,800	300	32	15	30	30/--	16/--	16
ecs.c3i.30xlarge	120	240	64/--	1,800	300	32	15	30	30/--	16/--	16
ecs.c3i.48xlarge	192	384	96/--	3600	600	32	15	30	60/--	32/--	16
ecs.c3i.60xlarge	240	480	96/--	3600	600	32	15	30	60/--	32/--	16

Compute-optimized c3a

tip

For information on images that can be used for this instance, please refer to Instructions on compatibility between AMD instance types and operating systems.

Features

Type	Performance
Computing	Processor: the 4th-generation AMD EPYC™️ Genoa processor with a processor base frequency of 2.6 GHz and a turbo frequency of 3.7 GHz. The processor-to-memory ratio is 1:2. Max.: 192 vCPUs, 384 GiB If you need an instance that can provide higher computing resources, please contact the account manager.
Storage	You can use ESSD volumes only. A maximum of 16 volumes (including 1 system volume) can be mounted. Small and medium-sized instances have burstable storage I/O performance. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Maximum network bandwidth: 64 Gbit/s Maximum throughput: 18,000,000 PPS Small and medium-sized instances have burstable network performance. The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

General enterprise applications

Website/application servers

Game servers

Audio/video transcoding applications

Small and medium-sized database systems

AI training and inference

Instance types and metrics

tip

Small and medium-sized instances have burstable storage and network performance. See details in the following table. "--" indicates that performance burst is not supported for the current instance type.

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance type	vCPU	Memory (GiB)	Network bandwidth (outbound + inbound, basic/burst, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (basic/burst, unit: 10,000)	Volume bandwidth (basic/burst, Gbit/s)	Volumes (including 1 system volume)
ecs.c3a.large	2	4	1.5/max. 12.5	130	Max. 25	2	3	6	1/max. 4	1/max. 4	5
ecs.c3a.xlarge	4	8	2.5/max. 12.5	140	Max. 25	4	3	15	1.5/max. 4	1.5/max. 5	9
ecs.c3a.2xlarge	8	16	4/max. 12.5	160	Max. 25	8	3	15	2/max. 6	2/max. 5	16
ecs.c3a.4xlarge	16	32	7/max. 12.5	200	30	8	6	30	3/max. 6	3/max. 5	16
ecs.c3a.8xlarge	32	64	12/max. 25	300	50	16	6	30	5/max. 8	3.5/max. 5	16
ecs.c3a.12xlarge	48	96	16/max. 25	450	75	16	8	30	8/--	4/max. 5	16
ecs.c3a.16xlarge	64	128	20/max. 25	600	100	24	8	30	10/--	5/--	16
ecs.c3a.24xlarge	96	192	32/--	900	150	32	8	30	15/--	8/--	16
ecs.c3a.32xlarge	128	256	40/--	1,200	200	32	8	30	20/--	10/--	16
ecs.c3a.48xlarge	192	384	64/--	1,800	300	32	15	30	30/--	16/--	16

Compute Balance-enhanced c1ie

Features

Type	Performance
Computing	Processor: the 3rd-generation Intel® Xeon® Scalable processor (Ice Lake) with a processor base frequency of 2.3 GHz or the 2nd-generation Intel® Xeon® Scalable processor (Cascade Lake) with a processor base frequency of 2.4 GHz. The processor-to-memory ratio is 1:2. Max.: 32 vCPUs, 64 GiB If you need an instance that can provide higher computing resources, please contact the account manager.
Storage	You can use ESSD volumes or TSSD volumes. A maximum of 16 volumes (including 1 system volume) can be mounted. The storage I/O performance depends on compute specification. A higher specification offers better performance.
Network	Maximum network bandwidth: 10 Gbit/s Maximum throughput: 1,800,000 PPS The network performance depends on compute specification. A higher specification offers better performance.

Applicable scenarios

Scenarios with high maximum throughput requirement

Website or web servers with high computing performance requirement

Massively Multiplayer Online (MMO) games

Web front-end servers

Data analysis, batch computing, and video encoding

High-performance scientific and engineering applications

Instance types and metrics

tip

The maximum throughput (PPS) varies significantly in different business scenarios. We recommend that you run a load test to evaluate instance performance and choose an appropriate instance type.

Instance specification	vCPU	Memory (GiB)	Maximum network bandwidth (outbound + inbound, Gbit/s)	Maximum throughput (outbound + inbound) (10,000 PPS)	Connections (10,000)	Maximum queues per network interface	Elastic network interfaces (including 1 primary network interface)	Private IP addresses for one network interface	Volume IOPS (unit: 10,000)	Volume bandwidth (Gbit/s)	Volumes (including 1 system volume)
ecs.c1ie.large	2	4	1	30	25	2	2	6	1	1	16
ecs.c1ie.xlarge	4	8	2	50	25	4	4	10	2	1.5	16
ecs.c1ie.2xlarge	8	16	3	60	25	8	4	10	3	2	16
ecs.c1ie.3xlarge	12	24	4	70	45	8	6	20	3	2	16
ecs.c1ie.4xlarge	16	32	5	100	60	8	8	20	4	3	16
ecs.c1ie.6xlarge	24	48	8	140	90	8	8	20	6	4	16
ecs.c1ie.8xlarge	32	64	10	180	120	16	8	20	8	5	16

Last updated: 2026.07.31 14:39:14