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¥0.30/GB-month

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Product Advantages
  • High Reliability

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

  • 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

bms

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 different service requirements.

  • Elastic Scalability

    One EVS disk can be expanded to 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
    Linear performance scaling can be achieved with capacity expansion.

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 for both disks and servers, preventing incorrect data caused by application exceptions or hacker 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 data security and correctness and service continuity.

  • Server backup
    Servers can be backed up to ensure data security and correctness and service continuity.

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

Scenarios

  • High-Performance Computing
  • Data Warehouse
  • NoSQL
  • Relational Database
Starting from¥1.00/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 per disk 5,000
  • Max. throughput per disk 150 MB/s
  • Read/write latency 1 ms to 3 ms
  • Max. capacity per disk 32 TB
  • Data durability 99.9999999%

Scenarios

  • Enterprise Applications
  • Large and Medium-scale Dev & Test Environments
  • Web Server Log
Starting from¥0.35/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 per disk 2,200
  • Max. throughput per disk 90 MB/s
  • Read/write latency 5 ms to 10 ms
  • Max. capacity per disk 32 TB
  • Data durability 99.9999999%

Scenarios

  • Office Applications
  • Small-scale Dev & Test Environments
Starting from¥0.30/GB-month
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