Product Overview

Cloud Disk (UDisk), as a basic block storage product in cloud computing scenarios, is a block device hard disk that provides persistent storage space for cloud hosts. It has an independent life cycle and is accessed based on network distribution, offering cloud hosts a hard disk with large capacity, high reliability, scalability, ease of use, and low cost.

Cloud Disk (UDisk) is divided into four types: Regular Cloud Disk, SSD Cloud Disk, RSSD Cloud Disk, and ESSD Cloud Disk (ESSD Cloud Disk is a new storage product, currently in public beta in the Ho Chi Minh City overseas data center). Regular Cloud Disks use SATA media, while SSD Cloud Disks, RSSD Cloud Disks, and ESSD Cloud Disks use SSD media.

Cloud Disk (UDisk) is a cloud disk device of Surfercloud that can be flexibly created and provides advanced management functions. It adopts a mechanism of multiple backups across cabinet physical machines within an availability zone. Regular Cloud Disks ensure 99.99999% data durability, and SSD Cloud Disks, RSSD Cloud Disks, and ESSD Cloud Disks ensure 99.999999% data durability. If you wish to further improve data durability, enabling the snapshot service for Cloud Disk (UDisk) (regular snapshot creation + Data Ark protection) is an economical and convenient way to enhance long-term data durability.

Cloud Disk (UDisk) is powerful and easy to use. Users can mount the created cloud disk to any cloud host and expand the capacity of the cloud disk when the disk space is insufficient. Meanwhile, the snapshot and cloning functions provided by UDisk facilitate data backup, recovery, and copying, improving data availability solutions.

Currently, the maximum capacity supported by Regular Cloud Disks is 8000G; SSD Cloud Disks also support a maximum capacity of 8000G; ESSD Cloud Disks support a maximum capacity of 8000G; and RSSD Cloud Disks support a maximum capacity of 32000G. This can better meet users’ needs for large capacity without the need for users to build their own LVM.

Note: For security reasons, a single UDisk can only be mounted to one cloud host at a time.