eSurfing Cloud provides users with three data storage services, namely Scalable File Service (SFS), Zettabyte Object Storage (ZOS), and Elastic Volume Service (EVS). The main differences among them are as follows:
Dimension | SFS | ZOS | EVS |
Concept | SFS provides a highly scalable file system that can share file data in a cloud environment, with high availability, durability, and reliability. | ZOS exhibits high scalability and durability. It can store vast data of any type and autonomously manages data redundancy, fault recovery, and data distribution. | EVS provides scalable block-level storage with high performance and low latency. EVS can be mounted to ECSs or DPSs, enabling them to store data durably. |
Storage mode | SFS uses file storage. File storage organizes data into hierarchical directories and file structures, and users can operate files and directories through file paths and names. | ZOS stores data as a separate object. Each object consists of the data itself and associated metadata (e.g., file name, file type, and size). | EVS adopts block storage. Block storage divides data into fixed-size blocks (typically several KBs or MBs) that can be accessed through a unique block address. |
Access mode | SFS accesses data through network sharing. Users can mount the file system on the required ECS instance or container instance, and the shared file systems are accessed through standard file system interfaces (such as NFS and SMB). | ZOS requires specifying a bucket address, and the access is realized by a transportation protocol such as HTTP or HTTPS. | Similar to a PC hard disk, EVS cannot be used alone and is often accessed through mounting. EVS can be mounted to an ECS or a DPS, making it visible in the operating system. |
Applicable scenarios | Examples include configuration files, log files, and other file data requiring sharing. It supports data sharing and synchronization between multiple container instances in containerized applications. | Examples include large-scale data storage and analysis scenarios such as big data analysis, data lake, data backup and archiving; as well as static website custody solution storage. | Examples include data storage and durability as the data storage medium of an ECS or DPS; and high-performance computing scenarios such as large-scale data processing and distributed computing. |
Capacity | SFS can be dynamically scaled up or down based on business needs. The default maximum capacity of a single file system is 32 TB. If a larger file system is required, you can submit an order. | ZOS has no capacity limit and allows infinite expansion of storage resources. | EVS supports on-demand capacity expansion with a minimum step size of 1 GB. A single EVS can be expanded from 10 GB to 32 TB. |
Is data sharing supported | Yes | Yes | Yes |
Is remote access supported | Yes | Yes | No |