Flexible hosting with KVM servers and QCOW images

If you use a KVM server, you may not be able to shrink your hard disk. This is because we use virtualization technology to offer you a flexible and scalable hosting solution. Our technology is based on so-called QCOW images, which are a virtual representation of your hard disk.

What is QCOW?

QCOW (QEMU Copy-On-Write) is a virtual disk file format used by QEMU and KVM (Kernel-based Virtual Machine). We would like to point out that due to the way QCOW images work, they usually do not allow for disk size reduction. This is because changes to the base disk of QCOW images are usually saved in a separate file, so it is difficult to undo changes to the base disk without rebuilding the entire QCOW image.