Mastering Proxmox - Third Edition

Throttling a virtual disk image

Proxmox allows throttling or setting a limit on the read/write speed and input/output operations per second (IOPS) for each virtual disk image. By default, there are no set limits. Each disk image will try to read and write at the maximum speed achievable in the storage where the disk image is being stored. For example, if a disk image is stored on a local storage, it will try to perform read and write operations at about 110 MB/s since that is the theoretical limit of a SATA drive. This performance will vary in different storage options. In a multi-tenant or large environment, if all the disk images are not throttled without any limit, this may put pressure on the network and/or storage bandwidth. By throttling, ...