Hi,
it depends on the hardware you have for your production storage, some may have a huge decrease in performance, some would have a lot less. Classic vmware snapshots have indeed some performance impact regardless the storage in use, because of the I/O redirection that is used there. There's not to much that can be done to this technology, but some workarounds can be applied:
- the quickest one is to switch from active full to synthetics, so that your weekly fulls take the same time of an incremental
- upgrade to vsphere 6 plus patches to limit the impact of snapshot consolidation (
http://www.virtualtothecore.com/en/vsph ... hing-past/)
- again with vsphere 6, look at VVOLs if your storage supports them, as the snapshot technology is totally different and has no performance impact
- if you have a supported storage, use Veeam backups from storage snapshot, as the vm snapshot is removed after a few seconds from the beginning of the job, not at the end, so it doens't matter how long it takes for the backup to complete
Luca