| What backups can be created for | Cloud server network volumes | Cloud servers, cloud server network and local volumes, directories, and individual files | Cloud server network and local volumes | Cloud server network volumes |
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| How backups are performed | - automatically — you need to create a plan with a backup schedule;
- manually
| Automatically | Manually | Manually |
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| Backup types | - full — when created automatically by schedule or manually;
- incremental — only when created by schedule
| Full and incremental | Full | Full |
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| How to create a backup | You do not need to turn off the server or install software to create a backup.
You can: | You do not need to turn off the server before creating a backup.
To create backups, you need to connect agent-based backup: purchase a license, install the agent on the server, and configure backup rules and schedule. The agent creates copies on schedule and transfers them to the cloud repository | We recommend turning off the server before creating an image.
Create an image from a disk in the control panel or via OpenStack CLI | You do not need to turn off the server or install software to create a snapshot.
Create a disk snapshot in the control panel or via OpenStack CLI |
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| How to restore a backup | When you restore from a backup, a new volume is created — you can connect it to an existing server, or use it to create a new cloud server, network volume, or image. You can only restore a full volume from a backup | You can restore a copy from a backup: - using backup agents: at the file and folder level or at the partition level;
- using Veeam Recovery Media bootable disk: at the system partition level or for the entire cloud server
| The created image is stored in the image storage — you can create a cloud server or network volume from it | You can create a cloud server, network volume, or image from a snapshot |
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| How many backups can be stored simultaneously | - if backups are created automatically by schedule, the total number of backups in a project is unlimited. You cannot create more than 90 full backups or 14 chains of incremental backups for one volume within a single plan;
- if backups are created manually, no more than 1 000 backups in one project
| The quantity is limited only by the amount of purchased disk space in the repository | The quantity is limited only by project limits on images — they can be increased via technical support | No more than five snapshots for one volume |
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| Storage reliability | Backups are stored with 3x replication on Selectel servers separately from disks. In single-zone pools, backups are stored in the same pool segment as disks. In a multi-zone pool, backups are stored in a data storage cluster common to all pool segments. You cannot change the storage location | Copies are stored in a cloud repository with triple replication | Stored on Selectel servers separately from disks, but in the same pool segment. You cannot choose a storage location. To increase storage reliability, you can transfer the image to another pool segment or download it and transfer it to third-party infrastructure outside Selectel | They are stored on the same hardware as the volumes — therefore, a snapshot is not a full-fledged backup. A snapshot is always deleted together with the volume |
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| Can a backup be downloaded | ✗ | ✗ | ✓ | ✗ |
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| Alerts and monitoring | Copies that failed to create are displayed in the interface with the ERROR status | The console includes a set of default error alerts (Alarms) for backup monitoring. In the Active Alarms section, you can configure alerts according to monitoring conditions, and enable or disable alerts | Images that failed to create are displayed in the interface with the ERROR status | ✗ |
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| Automatic check for backup consistency and health | ✗
We recommend manually checking the integrity and operability of copies via restoration from a backup | ✓
Consistency check. We recommend manually checking the operability of copies via restoration from a backup | ✗ | ✗ |
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| Pricing | Each GB of stored backups is charged. Storage prices can be viewed on selectel.ru | The agent license (one cloud server — one agent) and repository space are charged. Storage prices can be viewed on selectel.ru | Each GB of stored images is charged. Storage prices can be viewed on selectel.ru | The snapshot storage cost is equal to the cost of the disk it was created from. Disk prices can be viewed on selectel.ru |
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