Using iCloud Backup doesn't disable iTunes Backup completely; it just turns off Automatic Backups via iTunes. You can trigger a manual iTunes Backup whenever you want to create a new one:
- Plug your iOS device into your primary computer via the provided cable.
- Open iTunes. **Make sure you are signed in with your Apple ID**
- For iTunes 11:
- In iTunes, click the Devices button in the upper-right.
- In the Backups section, click Back Up Now under Manually Back Up and Restore.
- For iTunes 10.7:
- Right-click (or Control-click) your iOS device in the Source list.
- Choose Back Up from the iTunes device shortcut menu.
- Allow the backup to complete. You can monitor the status of the backup in the iTunes status screen.
If you're using iCloud and iTunes Backup together and you want to speed up your iCloud Backup and restore, you can save iCloud storage by turning off iCloud Backup for very large data types. For example, if you have a 15 GB Camera Roll on your iPhone, you might not wish to back it up to iCloud because it's already being manually backed up to iTunes. You can disable back up of any iCloud Backup item in settings:
- In iOS 8, go to Settings > iCloud > Storage > Manage Storage.
- If you're using an earlier version of iOS, go to Settings > iCloud > Storage & Backup > Manage Storage > Backups > Backup Options.
More info: Back up and restore your iOS device with iCloud or iTunes http://support.apple.com/kb/ht1766