For per job backup files: 30 VMs per job.Required CPU and RAM resources are normally below 5% (and in many casesīelow 3%) of all virtualization resources utilized by backup and Replication uses its central proxy and repository resources. Using all VMs as processing power for all backup operations (includingĭata transport, source deduplication and compression), Veeam Backup & Required processing resources may seem too high if compared with Note: Performance largely depends on the underlying storage To process a 2x increase in amount of changed data, it is also required to double the proxy resources. The same rule applies if the change rate is 2x higher (10% change rate). If you need to achieve a 2x smaller backup window (4 hours), then you may double the resources for a total of 32 CPU cores and 64 GB RAM - 2x the amount of compute power (possibly split across multiple servers). For virtual proxy servers, it is recommended to configure multiple proxies with maximum 8 vCPUs to avoid co-stop scheduling issues.

For a physical server, it is recommended to install dual CPUs with 8 cores each.480 VMs / 30 VMs per core = 16 CPU cores.Using the '30 VMs per CPU core' rule, we get following result: Sample infrastructure has the following configuration:įor that, the following calculation can be used as a starting point. Performance, these number can turn out to be too conservative, we recommend to do a POC and find out the

Depending on the infrastructure and mainly the storage Total needed Task Slot NumbersĪ general sizing rule of thumb is, to use 1 physical CPU core or vCPU and 2 GB RAMįor each 30 VMs within an 8 hour backup window. Tip: Doubling the proxy server task count will - in general - reduce the backup window by 2x. Please see related chapters for each components for further details. On the server, remember stacking system requirements for all the different components. If the proxy is used for other roles like Gateway Server for SMB shares, EMCĭataDomain DDBoost, HPE StoreOnce Catalyst or if you run the backup repository Or other special job settings that increase RAM consumption. Mentioned recommendations allow for growth and additional inline processing features Please consider these values as minimum requirements. In the User Guide it is stated that proxy servers require 2 GB RAM + 500 MB per task. Resources are used for inline data deduplication, compression, encryption and other features that are A task processes 1 VM disk at a time and CPU/RAM It is best practices to plan for 1 physical core or 1 vCPUĪnd 2 GB of RAM for each of the tasks. Processing ResourcesĪs described above, you may define the max concurrent tasks value in theīackup proxy settings. In this section, we will outline the recommendations to follow for appropriate sizing.

Getting the right amount of processing power is essential to achieving the RTPO defined by the business.

Veeam backup size calculator