To access these snapshots in Windows use the Previous versions tab in the file explorer. Just right click a file or directory and you can see this tab. Select the Date moditfied and browse with open. Now you can recover your files by copying them to their original location.
If you want older backups, you can browse the \\backup machine or the \\ipi-backup for the IPI group users. You will see a list of available shares where you can also use the Previous versions tab on a specific file or directory.