Disks and images

e24cloud allows you to dynamically create, resize, attach and detach storage volumes. These volumes are attached to server instances and are visible as virtual hard drives.


Storage types

SSD general purpose storage

General purpose SSD storage is solution that provides balance between performance, redundancy and features, which makes it suitable for most architectures demanding in both throughput and operations per second. Redundancy is provided by SSD backed storage cluster and connectivity by dedicated network infrastructure.

Parameters of general purpose SSD storage:

  • performance up to 20000 IOPS
  • throughput up to 400 MB/s
  • average latency about 3 ms
  • online resize
  • data storage redundancy
  • recovery points
  • cloning

Allowed single volume size is between 10GB and 2TB. General purpose SSD storage is available for both Shared and Dedicated Cloud.


HDD cold storage

HDD cold storage is cost effective solution allowing for cheap storage of large amount of rarely accessed data, such as backups or logs. HDD cold storage is optimized for sequential throughput and build over HDD based storage cluster that provides redundancy and connects to instances using dedicated network infrastructure.

Parameters of HDD cold storage:

  • performance up to 200 IOPS
  • throughput up to 50 MB/s
  • average latency around a dozen ms
  • online resize
  • data storage redundancy
  • recovery points
  • cloning

Allowed single volume size is between 500GB and 5TB. HDD cold storage storage is available for both Shared and Dedicated Cloud.


NVME high-performance storage

High performance NVME storage is a per-client solution providing better performance metrics than publicly available ones. It is build over dedicated NVME disks/cards mounted directly in customer’s compute hosts, which allows to achieve sub 1ms latency. It is perfect solution for applications that provides their own replication layers, such as SQL databases.

Parameters of high performance NVME storage:

  • performance up to 50000 IOPS
  • throughput up to 1250 MB/s
  • ~1ms latency
  • online resize (limited by the physical capacity of the device)

High performance NVME storage is available for Dedicated Cloud.


Comparison of storage types

cold-storage general-purpose high-performance
IOPS to 200 to 20000 to 50000
Transfer to 50 MB/s to 400 MB/s to 1250 MB/s
Latency ~30-500ms ~3ms ~1ms
Size change yes yes yes
Redundancy yes yes no
Restore points yes yes no
Cloning yes yes no
Shared cloud yes yes no


Storage volume driver

Storage volume is provided as virtio-blk PCI device and requires operating system driver to function properly. In case of Linux based systems, these drivers are provided by most distributions, in case of Windows systems, external ISO with drivers is required (available in Panel).


Storage volume attach/detach

All storage volumes, except for system disk, may be attached and detached to/from an instance. These operations are also available as online operations, providing that installed operating system is ACPI Hotplug compatible.

A single volume can be attached to a single instance only (no shared volumes).

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