Windows 7 Smart Create Restore Point Saves Hard Disk Space

In the Windows XP era, users can solve backup and restore through Ghost. But when the operating system enters the Windows 7 era, using Ghost backup and restore, obviously not as good as the system's own restore function. The problem is that when System Restore is enabled in Windows 7, it automatically creates a restore point (the default period is one day). The more restore points, the less hard disk space will be.
Thus, we can consider letting Windows 7 automatically create restore points more "smart", such as the system defaults to create once a day, modified to create every two or three days.
Small knowledge: not the same Windows 7 restore point
There may be some users do not know, Windows 7 does not automatically create restore points by default, you must manually open the relevant services (want to know how to manually open
Run the registry, and then expand to the following branch: HKEY_LOCAL_MACHINESOFTWAREMicrosoft
Windows NTCurrentVersionSystemRestore.
Then find and double-click "RPSessionInterval" in the right window, you can see in the pop-up window that the system default is "ld" ;0” (in seconds, decimal, as shown in Figure 1.)

Figure 1 RPSessionInterval default value
In order to facilitate the conversion, please select “ decimal in Figure 1, then the value "172800" (Do not enter double quotes), as shown in Figure 2:

Figure 2
In Figure 2, "172800" represents 172,800 seconds, which is two days. If you want Windows 7 Create a restore point every three days, please enter “259200” in decimal, and so on.