Elastic Volume Service-Wangsu

Elastic Volume Service

Providing block-level storage with high reliability, persistence and high I/O throughput capacity, and provides disk instances of various types and specifications to meet the storage performance requirements of stable and low latency. It can be mounted on cloud server instances and used as system disks and data disks, with data being stored persistently.

Benefits

Highly Reliable

With multi-copy redundancy storage, provides snapshot backup and rollback mechanism, delivering 99.99999% data reliability.

High Performance

Cloud hard disk uses distributed technology with highly parallel reads and writes. SSD cloud hard disk provides the highest throughput capacity of 20000IOPS and 300MBps per disk, with access latency under 2ms.

Highly Flexible

Cloud hard disks can be created and deleted in seconds. Multiple cloud hard disks can be mounted on each cloud server, and shared disks can be mounted to multiple cloud servers. A maximum storage of 32TB is supported on a single disk.

Multi-type Support

Cloud hard disks are available in four types: performance, SSD, shared performance and shared SSD, users may select any type for their different business scenarios.

Features

Support Multiple Specification Types

Cloud hard disks are available in four types: performance, SSD, shared performance and shared SSD, targeting the needs of different business scenarios.
- Performance : using SSD Cache technology, hot data is read and written on SSD for performance, layering of hot and cold data to achieve high performance at low cost, ideal for most IO application scenarios; up to 5000 random read and write IOPS and 140MBps throughput capacity; access latency 1-3ms; single cloud disk provides 1GB-32TB storage space.
- SSD : provides stable and reliable high-performance random IO storage, up to 20000 random read and write IOPS and 300MBps throughput; access latency 0.5-2ms; 1GB-32TB storage space on a single disk.
- Shared performance : the product specification is the same as that of ordinary performance cloud hard disk. The actual QOS of a single shared disk by each cloud server is the QOS value converted by capacity divided by the number of mounted cloud servers.
- Shared SSD : the product specification is the same as that of ordinary SSD cloud hard disk. The actual QOS of a single shared disk obtained by each cloud server is the QOS value converted by capacity divided by the number of mounted cloud servers.
Highly Reliable Guarantee Mechanism

Distributed storage technology, storage of multiple copies, and data security is guaranteed.
- Multiple copy guarantee: triplicate copy redundancy, with data reliability up to 99.99999%.
- Data encryption: support encryption of system drive and data drives that are not application sensitive.
Flexible Scaling

On demand online scaling for dynamic storage requirements.
- On demand scaling: performance and SSD type drives offer a minimum of 1GB and can be expanded with a lowest increment of 1GB.
- Linear growth of performance: supporting online expansion and linear performance growth, meeting business requirements while ensuring stable performance.
Data Backup And Recovery

Roll back of data backup with snapshot chains, easily recover missing data to ensure security and accuracy.
Creation And Deletion In Seconds

Cloud hard disks can be created and deleted in seconds, as well as freely mounted to any cloud servers.
Monitoring Service

Comprehensive real time monitoring service to gain insight of cloud hard disk statues instantly.
- Performance data monitoring, real time monitoring of cloud hard disk read/write rates and throughput.
- Customized alert rules with automated backend reminders.

Scenarios

Performance Cloud Hard Disk
SSD Cloud Hard Disk

Ideal for most IO scenarios and small and medium-sized databases, Web server logs, medium and large-scale development tests with moderate performance requirements, etc.
Hot data is read and written on SSD disk for performance layering of hot and cold data, reducing user cost and enhance user experience.
Cloud hard disks are categorized into various specifications according to IOPS and throughput capacity, cloud hard disks with different performance can be flexibly selected according to business needs to for better cost effectiveness.
Rapid backup and recovery of data, data can be quickly recovered when a fault occurs, making the data secure and reliable.

Ideal for large and medium-sized relational databases such as PostgreSQL, MySQL, Oracle, SQL Server, and medium and large-scale development and test environments and IO-intensive applications that require high data reliability and IO performance.
Underlying storage media entirely consisted of SSD hard disks to provide block storage with low latency and high IO.
No prior planning required, users can create, mount, uninstall and expand cloud hard disks according to business requirements to meet the storage requirements in certain emergency scenarios.