Synthetic full I/O patterns need to be split into two different operation: the creation of the additional incremental is exactly like any other incremental job. However, the synthetic creation of the full backup is an I/O intensive process, all in charge of the Veeam repository. Since the process reads individual blocks from the various files in the chain and writes those blocks to the full backup file, the I/O pattern is roughly 50%-50% read/write mix. The processing speed is limited by the IOPS and latency capabilities of the repository storage, so it may take a significant amount of time. However, there is no impact on the source storage or production networks during this time as I/O occurs only inside the repository.