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 storage
SSD Basic
Basic SSD storage is a cost-effective solution providing low latency, data security and additional functionality. The base performance of the storage can be exceeded up to five times during periods of increased demand. The solution is suitable for most standard applications including server system drives.
Parameters of Basic SSD storage:
- base performance up to 2500 IOPS
- performance up to 10000 IOPS
- throughput up to 250 MB/s
- average latency about 3 ms
SSD Performance
Performance SSD storage is solution that provides balance between performance, redundancy and features. The solution is optimized in terms of both sequential transfers and number of operations per second. It is recommended for applications that require high performance most of the time, such as drives supporting database servers.
Parameters of Performance SSD storage:
- performance up to 20000 IOPS
- throughput up to 400 MB/s
- average latency about 3 ms
Additional functionality for both SSD disk types:
- online resize
- data storage redundancy
- recovery points
- cloning
Redundancy is provided by SSD backed storage cluster and connectivity by dedicated network infrastructure. Allowed single volume size is between 10GB and 2TB. SSD storage is available for both Shared and Dedicated Cloud.
HDD 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 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 storage is available for both Shared and Dedicated Cloud.
NVME 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)
Comparison of storage types
| HDD | Basic SSD | Performance SSD | NVME | |
|---|---|---|---|---|
| IOPS | to 200 | to 10000 | to 20000 | to 50000 |
| Transfer | to 50 MB/s | to 250 MB/s | to 400 MB/s | to 1250 MB/s |
| Latency | ~30-500ms | ~3ms | ~3ms | ~1ms |
| Size change | yes | yes | yes | yes |
| Redundancy | yes | yes | yes | no |
| Restore points | yes | yes | yes | no |
| Cloning | yes | yes | yes | no |
| Shared cloud | yes | yes | yes | no |
Disconnecting and Connecting Virtual Disks
All disks, except the system disk, can be disconnected and connected to the Virtual Server. The standard disk can be connected to a single Virtual Server, or you can create shared disks that can be connected to more than one Virtual Server.
Disk Device Driver
Disk space is provided as virtio-blk devices and requires appropriate drivers on the operating system’s side.
For Linux-based systems, these drivers are available in most distributions.
For Windows-based systems, they require an external installation from an ISO image (provided in the Client Panel).