Elastic Volume Service

Elastic Volume Service (EVS) provides persistent block storage for services such as Elastic Cloud Server (ECS) and Bare Metal Server (BMS). With advanced data redundancy and cache acceleration capabilities, EVS offers high availability and durability with an extremely low latency.

Starting from $0.046 USD/GB-month

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Product Advantages
  • High Reliability

    Three copies of data ensure 99.9999999% availability and durability, and security.

  • High Performance

    A disk can sustain up to 33,000 IOPS, and have a max. throughput of 350 MB/s and min. latency of 1 ms.

  • Flexibility

    Ultra-large block storage (max. 32 TB per disk), dynamic online capacity expansion, and pay-per-use option.

  • Rich Features

    Features include disk sharing, disk encryption, disk and server backups, and snapshots.

Application Scenarios
  • High-Performance Computing

  • Data Warehouses

  • NoSQL/Relational Databases

  • Enterprise Office Applications

  • Dev & Test Environments

High-Performance Computing

High-Performance Computing

Applies to distributed file systems, such as Lustre and GPFS, which require high-performance storage. Ultra-high I/O EVS disks meet extremely high throughput and read/write speed requirements.

Advantages

Ultra-high Performance

Up to 33,000 IOPS and 350 MB/s throughput per disk

Ultra-low Latency

Down to 1 ms access latency

Multi-Terabyte Capacity

Up to 32 TB per disk

Related Services

ecs

evs

vpc

Data Warehouses

Data Warehouses

Applies to read-intensive applications such as Oracle RAC and SAP HANA. Ultra-high I/O EVS disks meet low latency and extremely high throughput and read/write speed requirements.

Advantages

Ultra-high Performance

Up to 33,000 IOPS and 350 MB/s throughput per disk

Ultra-low Latency

Down to 1 ms access latency

Multi-Terabyte Capacity

Up to 32 TB per disk

Related Services

ecs

evs

vpc

NoSQL/Relational Databases

NoSQL/Relational Databases

Applies to read/write intensive databases such as MongoDB, Oracle, SQL Server, MySQL, and PostgreSQL. Ultra-high I/O EVS disks meet low latency and extremely high read/write speed requirements.

Advantages

Ultra-high Performance

Up to 33,000 IOPS and 350 MB/s throughput per disk

Ultra-low Latency

Down to 1 ms access latency

Multi-Terabyte Capacity

Up to 32 TB per disk

Related Services

ecs

evs

vpc

Enterprise Office Applications

Enterprise Office Applications

Applies to enterprise office applications such as SAP, Microsoft Exchange, and Microsoft SharePoint. High I/O EVS disks meet diverse enterprise office requirements.

Advantages

High Reliability

Three copies of data, ensuring 99.9999999% data durability

High Scalability

Capacity expansion with linear performance scaling

Multi-Terabyte Capacity

Up to 32 TB per disk

Related Services

ecs

evs

vpc

Dev & Test Environments

Dev & Test Environments

Applies to development and test environments. Common I/O EVS disks meet development and test environment requirements.

Advantages

High Reliability

Three copies of data, ensuring 99.9999999% data durability

High Scalability

Capacity expansion with linear performance scaling

Multi-Terabyte Capacity

Up to 32 TB per disk

Related Services

ecs

evs

vpc

Functions

  • Rich Specifications

    EVS provides common I/O, high I/O, and ultra-high I/O disk types to meet your service requirements.

  • Elastic Scalability

    Each EVS disk can be expanded up to 32 TB in 1 GB increments.

  • Security and Reliability

    Distributed storage and encryption ensure reliability and protection of data.

Rich Specifications

  • Common I/O EVS Disks

    Suitable for scenarios that feature few transactions and require large capacity and normal read/write speed.

  • Ultra-high I/O EVS Disks

    Suitable for intensive read/write scenarios that require extremely high performance and read/write speed, and low latency.

  • High I/O EVS Disks

    Suitable for scenarios that require high performance, high read/write speed, and real-time data storage.

Elastic Scalability

  • On-Demand Capacity

    Each EVS disk has an initial capacity of 10 GB, and can be expanded in 1 GB increments.

  • Linear Performance Scaling

    Resources can be expanded while services are running, and linear performance increase can be achieved.


Security and Reliability

  • Three Copies of Data

    Distributed storage with multiple data replicas ensures 99.9999999% availability.

  • Data Encryption

    System disks and data disks support data encryption with zero application awareness.

  • Backup and Restoration

    Backups are supported, preventing incorrect data caused by application exceptions or attacks.

  • Real-Time Monitoring

    EVS supports real-time monitoring of health and running status of disks through Cloud Eye.

Backup and Restoration

  • Disk Backup

    EVS disks support point-in-time backups, ensuring the correctness of your data for improved service continuity.

  • Server Backup

    Server-wide backup keeps all your hard work safeguarded and ensures the durability of your data.

Real-Time Monitoring

  • Performance Data Monitoring

    The read/write speeds and throughput of EVS disks can be monitored in real time.

  • Alarm Rules

    EVS supports user-defined alarm rules and automatic reminders.

Recommended Configurations

Ultra-high I/O EVS Disks

For scenarios requiring ultra-high I/O, ultra-large throughput, and ultra-low latency.

Ultra-high I/O EVS Disks

For scenarios requiring ultra-high I/O, ultra-large throughput, and ultra-low latency.

Configuration

  • Max. IOPS/disk 33,000
  • Max. throughput/disk 350 MB/s
  • Read/write latency 1 ms
  • Max. capacity/disk 32 TB
  • Data durability 99.9999999%

Scenarios

  • High-Performance Computing
  • Data Warehouses
  • NoSQL
  • Relational Databases
Starting from $0.154 USD/GB-month

High I/O EVS Disks

For scenarios requiring high I/O, large throughput, and low latency.

High I/O EVS Disks

For scenarios requiring high I/O, large throughput, and low latency.

Configuration

  • Max. IOPS/disk 5,000
  • Max. throughput/disk 150 MB/s
  • Read/write latency 1 ms to 3 ms
  • Max. capacity/disk 32 TB
  • Data durability 99.9999999%

Scenarios

  • Enterprise Applications
  • Large and Medium-scale Dev & Test Environments
  • Web Server Log
Starting from $0.054 USD/GB-month

Common I/O EVS Disks

For scenarios with fewer transactions and requiring large capacity, and normal I/O and latency.

Common I/O EVS Disks

For scenarios with fewer transactions and requiring large capacity, and normal I/O and latency.

Configuration

  • Max. IOPS/disk 2,200
  • Max. throughput/disk 90 MB/s
  • Read/write latency 5 ms to 10 ms
  • Max. capacity/disk 32 TB
  • Data durability 99.9999999%

Scenarios

  • Office Applications
  • Small-scale Dev & Test Environments
Starting from $0.046 USD/GB-month