What is an enterprise instance? What is an entry-level instance?

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Enterprise-level instance FAQ

What is an enterprise-level instance? What is an entry-level instance?

Enterprise-class instances are the general name for a series of instance specification families launched by Alibaba Cloud in September 2016. They feature high performance, stable computing capabilities, and balanced network performance. Because they have exclusive and stable computing, storage, and network resources, these instance specification families are very suitable for enterprise scenarios that have high requirements for business stability.

Entry-level instances are a general term for a series of instance specifications (families) targeted at general small and medium-sized websites or individuals. Compared with enterprise-level instances, entry-level instances place more emphasis on sharing resource performance in terms of resource utilization, so they cannot guarantee the stability of instance computing performance, but the cost is relatively lower.

What is the essential difference between enterprise-level instances and entry-level instances?

Enterprise-level instances adopt fixed CPU scheduling mode. Each vCPU is bound to a physical CPU hyperthread, and there is no competition for CPU resources between instances. Instance computing performance is stable and has strict SLA guarantees.

Entry-level instances adopt non-bound CPU scheduling mode. Each vCPU will be randomly assigned to any idle CPU hyperthread. Different instance vCPUs will compete for physical CPU resources, causing unstable computing performance fluctuations under high load. There is an availability SLA guarantee, but no performance SLA guarantee.

What are enterprise-level instances? What are the entry-level instances?

Currently, among the instance specification families on sale, entry-level instances include: n4, mn4, xn4, and e4. Other instance specification families on sale are enterprise-level instances.

Under what business scenarios do I need to purchase enterprise-level instances?

Enterprise-level instances are suitable for the following scenarios:

Massively multiplayer online game (MMO) front-end, data analysis and calculation

Medium and large web servers (high concurrency )

Use the CPU for fixed performance computing scenarios such as high-precision encoding and decoding, rendering, and genetic computing

Cache/Redis, search classes, memory databases, and high I/O databases such as Oracle and MongoDB , Hadoop cluster, large amounts of data processing and fixed performance computing scenarios

What is the network performance of enterprise-level instances?

The network performance of enterprise-level instances is related to the instance specifications: small-sized instances have low network performance, while large-sized instances have high network performance. For network performance corresponding to different instance types, see Instance Type Family.

What cloud disk types are supported by enterprise-level instances?

Enterprise-level instances support high-efficiency cloud disks and SSD cloud disks.

What types of images are supported by enterprise-level instances?

Supports images of all operating systems.

What are the restrictions on changing enterprise-level instance specifications?

Configuration rules for enterprise-level instances:

sn2ne, sn1ne, se1 and se1ne can be reconfigured with each other and within the specification family.

The ce4 specification family can be configured with each other.

hfc5 and hfg5 can be matched with each other as well as within the specification family.

gn4 can only be changed within the specification family.

d1, d1ne, i1, i2, gn5, ga1, and f1 do not support configuration changes.

Can entry-level instances be converted into enterprise-level instances?

Series III VPC network type ECS instances (including n4, mn4, xn4, and e4) can be configured to se1.

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