Frequently Asked Questions¶
General Questions¶
What is Cloud VPS and what is it used for?
Cloud VPS (Cloud Virtual Private Server) is a virtual server with guaranteed resources — CPU, RAM, and disk space. It's suitable for hosting websites, applications, databases, development, and testing. For more information, see Introduction to the service.
What operating systems are supported?
The service supports a wide range of Linux distributions — AlmaLinux, CentOS, CloudLinux, Debian, Fedora, OpenSUSE, OracleLinux, RockyLinux, and Ubuntu — as well as Windows Server. You can choose an operating system when ordering or switch it through Reinstall. Ready-made images with pre-installed applications (WordPress, Joomla, Magento, etc.) are also available.
What happens to my data when reinstalling?
Reinstalling erases all data on the server's main volume — including the operating system, applications, and configurations. Before reinstalling, it is recommended to create a snapshot or backup of your important data.
Is there an additional fee for Windows?
Yes. Windows Server distributions include an additional monthly license fee added to the plan price. The fee is visible when selecting the operating system on the Reinstall page.
Ordering and Activation¶
How do I order a Cloud VPS?
You can order the service directly from the client area or from the official page on Delta.BG. Select a plan, region, and operating system, add the service to your cart, and complete the order. For detailed instructions, see Ordering and Activation.
How long does it take to activate the service?
The service is usually activated automatically within 5–15 minutes after a successful payment. Once activated, you'll receive a notification, and the service will appear in your list of active services in the client area.
Can I change the plan after ordering?
Yes, you can change your server's plan through the resize page. You select a new plan, a proforma invoice is generated, and after payment the server is automatically restarted with the new configuration. Your data is not affected. For more information, see Resize.
What happens to my data when resizing?
Your data is not affected when resizing. The server will be automatically restarted to apply the new configuration, but all files, applications, and settings are preserved.
Can I decrease the disk size?
No. The disk size can only be increased. If you change to a smaller plan, you will keep the current disk size. After increasing disk space, you may need to manually extend the filesystem — see Extending a Disk on Linux.
Server Management¶
How do I start or stop the server?
Navigate to the "Management" section on the service page. In the "Power Control" section, you'll find the buttons to start, stop, and force-reboot the server. For detailed instructions, see Power Control.
What is rescue mode and when should I use it?
Rescue mode loads a temporary operating system when the primary system cannot start. Use it to diagnose issues, repair file systems, or recover configuration. For details, see Rescue Mode.
How do I reset the access password?
Navigate to the "Management" section and click the "Reset Password" button in the "Password Reset" section. The new password will be automatically generated and displayed in the "Overview" section. For details, see Password Reset.
How do I access the server via SSH?
Use an SSH client (e.g., the terminal on Linux/macOS or PuTTY on Windows) with the SSH access command shown in the "Overview" section of the service. You can also use the built-in web console.
Volumes¶
How do I add additional disk space?
You can attach additional volumes (Block Storage) from your project in the "Volumes" section on the service page. For detailed instructions, see Managing Volumes.
Can I move a volume between servers?
Yes, you can detach a volume from one server and attach it to another server within the same project. The data on the volume is preserved during the move.
Network Configuration¶
How do I create a private network between my servers?
Navigate to the "Network Configuration" section and in the "Available Networks from the Project" section, click the "+ New Network" button. After creating the network, connect the servers by creating network interfaces. For details, see Managing Networks.
How do I configure firewall rules?
Use security groups to manage network traffic. Create a custom group with specific rules for inbound and outbound traffic and apply it to the server's network interface. For details, see Security Groups.
What is a security group?
A security group is a set of rules that control inbound (ingress) and outbound (egress) network traffic on the server's network interfaces. It acts as a virtual firewall, allowing you to define which traffic should be permitted. For details, see Security Groups.
Snapshots¶
What is a snapshot and what is it used for?
A snapshot is a point-in-time copy of an entire volume at the block level — including the operating system, software, configuration, and data. It is used to quickly restore a volume to a previous state, for example before a system update, configuration change, or software installation. For details, see Snapshots.
How long are snapshots kept?
Snapshots are kept for a period of 48 hours. After that time, they are automatically deleted.
How many snapshots can I maintain at a time?
You can maintain a maximum of one manual snapshot at a time. To create a new snapshot, you must first delete the existing one.
Can I snapshot an additional volume (Block Storage) from the Cloud VPS page?
No. From the "Snapshots" tab on the Cloud VPS service page, you can only create snapshots of the server's main volume. For snapshots of additional volumes (Block Storage) attached to the server, use each volume's own page in the client area.
What happens when I revert to a snapshot?
When reverting, the volume is restored to the state captured in the snapshot. All current data on the volume will be replaced. The server will be automatically powered off and then powered on again. This action is irreversible.
What is the difference between a snapshot and a backup?
Snapshots capture the entire volume at the block level and are kept for 48 hours — they are suited for short-term protection before changes. Delta Cloud Backup archives individual files, folders, and databases with configurable retention and automatic scheduling — it is suited for long-term protection. For a detailed comparison, see Snapshots vs. Backups.
Monitoring¶
How do I monitor my server's performance?
In the "Graphs" section, you can view visualizations of CPU load, RAM usage, disk operations, and network traffic. Choose an observation period — from the last hour to the last month. For details, see Graphs.
Support¶
How do I get support if I have an issue?
You can create a support ticket from the "New Ticket" section on the service page in the client area.