Things to note when storing data on d1 or d1ne local disks

The content of this article is about the precautions when storing data on d1 or d1ne local disks. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Instance type family d1 and d1ne FAQ

What are the d1 and d1ne instance type families?

d1 stands for big data instance specification family.

d1ne stands for Big Data Network Enhanced instance specification family.

d1, d1ne is an instance specification family designed for business scenarios such as Hadoop distributed computing, massive log processing, and large data warehouses. It solves the problem of cloud computing and storage of massive business data in the big data era. For detailed instance specifications, see ECS Product Introduction Instance Specifications Family.

Which industry customers and business scenarios are d1 and d1ne suitable for?

It is suitable for customers in the Internet industry, financial industry and other industries that have big data computing and storage analysis needs, and carries out business scenarios of massive data storage and offline computing, fully satisfying the distributed computing represented by Hadoop. Business types have various requirements for instance storage performance, capacity, and intranet bandwidth.

At the same time, combined with the high-availability architecture design of distributed computing services represented by Hadoop, the d1 and d1ne specification family instances adopt the design of local storage, while ensuring massive storage space and high storage performance. The total cost of ownership is similar to the offline IDC self-built Hadoop cluster.

What are the characteristics of the d1 and d1ne instance type families?

Provides stable computing capabilities based on enterprise-level architecture to ensure efficient processing of computing jobs.

Higher network performance (including the maximum intranet bandwidth and maximum small packet forwarding rate of a single instance, see the instance specification family description for details) to meet the data interaction needs between instances during peak business periods (such as the Shuffle process under the MapReduce computing framework) .

Single disk 190 MB/s sequential read and write performance (when creating an instance for the first time, the disk needs to be warmed up to achieve maximum performance), a single instance has a maximum storage throughput of 5 GB/s, shortening HDFS file reading and writing Enter time.

The price of local storage is 97% lower than that of SSD cloud disk, which greatly reduces the cost of Hadoop cluster construction.

What are the instance specifications for d1 and d1ne?

For details on instance specifications, please see the instance specification family in the ECS Product Introduction.

How to buy d1/d1ne local disk?

You cannot purchase local disks separately, you can only purchase local disks when creating a d1 or d1ne instance. The number and capacity of local disks are determined by the instance type you choose. For detailed information, please refer to the document Instance Type Family.

What are the precautions when storing data on d1 or d1ne local disk?

Warning:

The data disks of d1 and d1ne instances are local disks, and there is a risk of data loss (for example, when the host machine goes down). If you If your application cannot achieve data reliability, we strongly recommend that you use cloud disks to build your instances.

The operation and data retention relationship between instances with local disks are as shown in the following table.

Can d1 and d1ne mount SSD cloud disks? Can the mounted cloud disk be expanded?

d1 and d1ne can mount SSD cloud disks. The mounted cloud disk supports expansion. For details, see Expanding the Cloud Disk.

Do the local disks of d1 and d1ne support snapshots?

Snapshots are not currently supported. Therefore, if you need to create a full image for d1 and d1ne instances, it is recommended to create it by combining "system disk snapshot" and "data disk (cloud disk only) snapshot".

Currently you cannot create a full image based on the instance ID, so you cannot use a custom image to create a d1 or d1ne instance.

Do d1 and d1ne support configuration changes and downtime migration?

Neither d1 nor d1ne supports configuration changes.

Currently, downtime migration is not supported. Please pay attention to the official website notification for subsequent support time.

Which regions provide d1 or d1ne instances?

You can currently purchase d1 or d1ne instances in the following regions and availability zones: North China 1 (Availability Zone C), North China 2 (Availability Zone D, E), North China 3 (Availability Zone A), East China 1 (Availability Zone B), East China 2 (Availability Zone B), South China 1 (Availability Zone C), Hong Kong (Availability Zone B, C), Asia Pacific Southeast 1 (Availability Zone A, B), US East 1 (Availability Zone A), US West 1 (Availability Zone A), Central Europe 1 (Availability Zone A), Asia Pacific Southeast 2 (Availability Zone A). Click here to purchase, other regions will be launched one after another, please pay attention to the official website notification.

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