Tencent Cloud
Cloud Block Storage

Cloud Block Storage

A stable, low-latency, scalable, and persistent block storage service

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Overview

Tencent Cloud Cloud Block Storage (CBS) provides a persistent block storage service for CVM instances. CBS automatically stores data in multiple redundant copies in an availability zone to eliminate the risk of single points of data failure, providing up to 99.9999999% data reliability. CBS offers cloud disks in multiple types and specifications to achieve stable and low-latency storage performance.CBS can be mounted to or unmounted from instances in the same availability zone, and its storage capacity can be altered in a few minutes, meeting elastic storage requirements. Payment is based on actual usage, and allowing you to enjoy all the above features at a low price point.

Benefits

Elastic Scalability

Elastic Scalability

One single cloud disk can store up to 16 TB of data, and up to 10 cloud disks (160 TB) can be mounted to one single CVM instance. The storage capacity can be freely configured and scaled as needed to meet the requirements of your business, enabling efficient processing of big data at the terabyte and petabyte levels.

Multiple Storage Types

Multiple Storage Types

CBS offers three volume options including HDD cloud disk, premium cloud disk and SSD cloud disk to meet different business storage requirements. SSD cloud disk uses NVMe high-performance SSD, and one single disk is capable of providing 24,000 random IOPS and a throughput of 260 MB/s, making it easy for your business to sustain high-throughput database access.

High Stability and Reliability

High Stability and Reliability

Before each storage write request is returned to the user, CBS ensures that the data has already been successfully written to three cross-rack storage nodes. The data replication mechanism of CBS is higher than the industry average, ensuring rapid data migration and recovery in case that any copy fails and achieving up to 99.9999999% data reliability to protect your applications from component failures.

Easy to Use

Easy to Use

CBS can be used and managed through simple operations such as creation, mounting, unmounting and deletion, reducing the costs of manual management and deployment.

Snapshot Backup

Snapshot Backup

Data can be backed up by taking point-in-time snapshots of cloud disks to prevent data loss due to tampering or accidental deletion and ensure quick rollbacks in the event of business failure.

Features

A cloud disk can be freely mounted and unmounted in the same region without the need to shut down or restart the server. Its storage capacity can be configured elastically and scaled on demand. Up to 20 cloud disks can be mounted to one single virtual machine, providing up to 320 TB of storage that fully satisfies the requirements of high-volume file systems in various businesses such as big data, data warehousing and log processing.