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The recommended hardware requirements for running OpenVZ are as follows:
• x86-64 platform with hardware virtualization support: Intel VT-x (with "unrestricted guest") or AMD-V,

Note: To check if the Intel processor supports the "unrestricted guest" feature: 1) Download from, 2) Run python | grep -i unrest. The result must be yes.

• CPU: at least 4 cores, a 64-bit processor is required for running 64-bit guest operating systems,
• RAM: 4 GB or more,
• HDD: 64 GB or more,
• SSD (optional): at least 30 GB (at least 32 GB with /boot)
• Network: an Ethernet network adapter and a valid IP address.
The actual number of virtual machines and containers you can run on a physical server and their
performance depend on resources they will consume.