Generally not a good idea---the produced DVDs are not as reliable as a backup source as a hard drive would be. I'd use an imaging application and store the image file on an external drive if at all possible. DVDs are better than nothing, but I wouldn't have a lot of faith in them.
If you just want a Windows installation disc and don't have one, you can download an ISO file of Windows 7 from mydigitallife.info, burn it to a disc and install with it. Use your existing 25 character Product Key.
My Computer
At a glance
Windows 7 Home Premium SP1, 64-bitIntel Skylake i5-6600K, not overclocked8 GB HyperX DDR4-2666 (2 x 4 GB)none; graphics are integrated on CPU
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
1. Have you made the Recovery CDs/DVDs? Do create them and keep it safely so that in the event of the HDD failure, you can replace the HDD and restore your laptop to the factory condition.
2. Do note down the product ID on the COA sticker and keep it safely. In due course that may become unreadable and you will require the COA key in the event you need to clean install (unless you have backed up and kept the OEM activation data from your genuine SONY machine.)