Using LVM with XFS is fine if you need more flexibility for volume extension. It also does not have any impact on Veeam’s RAID stripe size recommendation, because the filesystem block size is just how granularly the filesystem tracks block allocation. The Linux implementation of XFS is limited to a maximum of 4K for the block size this shouldn’t be an issue as the filesystem size can go up to 1PB and performance is not affected by the small block size. Since all transformation tasks are done via metadata operations, synthetic full backups get a huge performance boost and they don’t take up any additional capacity. Veeam leverages it to implement the Fast Clone functionality. XFS Data Block Sharing (Reflink) provides the same benefits as ReFS in terms of speed and space consumption. Please see the full list of operations that consume task slots at the bottom of this page. For this reason, it’s recommended to use thick provisioned LUNs with ReFS. Depending on the ReFS size or task requirements you may want to add up more memory but there should be no need to go over 256 GB.Ī word of caution about ReFS file systems and thin provisioned LUNs: ReFS does not support trim, unless on storage spaces, so space reclamation will not take place.
128GB of RAM is often sufficient for the task, with OS and ReFS requirements if the total ReFS volume size of the server is belo ~200TB. However, you don’t have to scale this indefinitely. For ReFS based file systems the recommendation is to add 0.5GB RAM per TB of ReFS storage. For example:Īlways use 64 KB block allocation size. The quantity of cores required can be calculated by dividing the proxy core count by three. Three copies of the data (production, backup and backup-copy)Īt the repository a task slot correlates to a concurrently processed disk which would have been calculated as part of the proxy sizing.The key recommendation is to follow the 3-2-1 rule. The most common design has a primary backup on-site and a backup copy off-site. The Veeam Backup Repository can be located wherever the environment allows it. The recommended minimum for a repository is two cores and 8GB RAM.Calculate 4GB RAM per repository CPU core.Calculate one repository core per three proxy cores.Physical repositories are recommended where possible (ideally combined with proxy role using backup from storage snapshots).Veeam backup repository design Best practice This site uses Just the Docs, a documentation theme for Jekyll.
Restoring VMs to an HPE 3PAR with thin disks.Backup Repository HA using Windows Storage Replica.
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