Functions

Functions

  • Rich Specifications

    Common, high, and ultra-high I/O disks are available so you are free to optimize your storage for capacity, latency, or speed.
    Three disk types, common I/O, high I/O, and ultra-high I/O

  • Elastic Scalability

    Disks support online capacity expansion, but one disk can be expanded to up to 32 TB in 1 GB increments.
    Up to 32 TB per disk and capacity expansion in 1 GB increments

  • Security and Reliability

    Triplicate storage ensures reliability while encryption keeps your data safe.
    Distributed storage and encryption ensure data security.
  • Ultra-high I/O EVS Disks
    Ultra-high I/O EVS Disks
    Suitable for read/write intensive scenarios that require extremely high performance and read/write speed, and low latency. An ultra-high I/O disk can sustain up to 33,000 IOPS, and have a maximum throughput of 350 MB/s and minimum latency of 1 ms.
    Suitable for read/write intensive scenarios demanding extremely high performance and read/write speed, and low latency.
  • High I/O EVS Disks
    High I/O EVS Disks
    Suitable for scenarios that require high performance, high read/write speed, and real-time data storage. A high I/O disk can sustain up to 5,000 IOPS, and have a maximum throughput of 150 MB/s and minimum latency of 1 to 3 ms.
    Suitable for scenarios demanding high performance, high read/write speed, and real-time data storage.
  • Common I/O EVS Disks
    Common I/O EVS Disks
    Suitable for scenarios that feature few transactions and require large capacity and normal read/write speed. A common I/O disk can sustain up to 2,200 IOPS, and have a maximum throughput of 90 MB/s and minimum latency of 5 to 10 ms.
    Suitable for scenarios that feature few transactions and require large capacity and normal read/write speed.
  • Online Capacity Expansion
    Online Capacity Expansion
    Disk capacities can be expanded on the console or via API without detaching disks, and linear performance scaling can be achieved.
    Online capacity expansion without detaching disks and linear performance scaling
  • Three Copies of Data
    Three Copies of Data
    With distributed technologies, data is saved in three copies on storage nodes across cabinets, ensuring rapid data restoration and 99.9999999% data durability, and avoiding data losses caused by hardware failures.
    Distributed storage with three data replicas ensures 99.9999999% availability.
  • Data Encryption
    Data Encryption
    Data encryption is supported for both system disks and data disks with zero application awareness, and the encryption function frees you from building and maintaining your own key management infrastructure.
    System and data disks support data encryption with zero application awareness.

  • Backup and Restoration

    Data on your disks can be backed up automatically based on the pre-defined backup policy or manually.
    Pre-defined backup policy or manual backup

  • Real-Time Monitoring

    EVS supports real-time monitoring of the disk health and running status through Cloud Eye.
    Real-time disk monitoring through Cloud Eye

  • Data Sharing

    Shared disks support concurrent read/write from multiple servers.
    Concurrent read/write from multiple servers
  • Automatic Backup
    Automatic Backup
    You can associate your disks with pre-defined backup policies to automatically back up the disk data without detaching them.
    Automatic backup with pre-defined backup policies
  • Manual Backup
    Manual Backup
    You can manually back up the disk data at specified points of time on the console or via API when needed.
    Manual backup on the console or via API as required
  • Backup Restoration
    Backup Restoration
    You can restore your disk data to the desired backup time or batch create new data disks from backups to implement rapid deployment.
    Data restoration to desired backup time and batch creation of new disks from backups
  • Performance Data Monitoring
    Performance Data Monitoring
    The read/write speeds and throughputs of EVS disks can be monitored in real time.
    Real-time disk read/write speed and throughput monitoring
  • Alarm Rules
    Alarm Rules
    EVS supports user-defined alarm rules and automatic reminders.
    User-defined alarm rules and automatic reminders
  • Data Sharing
    Data Sharing
    Shared disks are block storage devices that support concurrent reads/writes and feature multiple attachments, high concurrency, high performance, and high reliability. Multiple servers can access one shared disk simultaneously.
    A shared disk can be attached to multiple servers for use.

Application Scenarios

  • High-Performance Computing

  • NoSQL/Relational Databases

  • Enterprise Cluster & Core Applications

  • Enterprise Application Systems

  • Development & Test Environments

High-Performance Computing

High-Performance Computing

Great for distributed file systems like Lustre, 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

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NoSQL/Relational Databases

NoSQL/Relational Databases/Data Warehouses

Great for read/write intensive applications, various databases, and data warehouses, like SQL Server, MySQL, and SAP HANA. 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 

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Enterprise Cluster & Core Applications

Enterprise Cluster & Core Applications

Great for enterprise cluster and core applications, like Microsoft Windows Server Failover Clustering (WSFC) and Oracle RAC. Shared EVS disks meet the cluster application deployment requirements.

Advantages

High Performance

BMS and shared EVS disks provide high performance for cluster applications.

Multiple Attachments

One shared EVS disk can be attached to a maximum of 16 servers, supporting complex cluster applications.

High Reliability

Three copies of data ensures 99.9999999% data durability, safeguarding customer data.

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Enterprise Application Systems

Enterprise Application Systems

Great for key enterprise application systems 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

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Development & Test Environments

Development & Test Environments

Great for 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

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Recommended Configurations

Ultra-high I/O EVS Disk

Superior performance, ultra-low latency, high reliability

High-performance computing | Data warehouses | NoSQL | Relational databases

  • 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%

Starting from $0.154 USD /GB-month

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High I/O EVS Disk

High reliability, cost-effectiveness

Enterprise applications | Large- and medium-scale dev & test environments | Web server logs

  • 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%

Starting from $0.054 USD /GB-month

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Common I/O EVS Disk

High reliability, moderate performance and cost

Office applications | Small-scale dev & test environments

  • 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%

Starting from $0.046 USD /GB-month

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Usage Guides

Video Library

Buying an Elastic Volume Service Disk

Deleting Elastic Volume Service Disks (Data Disks)

Expanding an Available Elastic Volume Service Disk

Expanding an In-use Elastic Volume Service Disk

Documentation

Documentation

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