IO-DATA Soundgenic 3TB

IO DATA is a Japanese manufacturer famous for hard drives, and they are a wonderful company that offers NAS functionality at an affordable price. I bought this 3 years ago on Amazon for 80,000 yen. The manual can be downloaded for free online.
You can rip CDs and control it with your smartphone to store an unlimited amount of your own music library. Also, by simply connecting it to a DAC, you can enjoy high-resolution music with its abundant information without using a computer, and you can listen more clearly because it's a direct connection without computer noise. I've included a photo of the back, but one of the rubber feet is missing. It still sits level on its three feet. It contains my DSD data, including expensive classical and jazz music, but if you prefer, I recommend checking and deleting it. I haven't reset it, so please check it.
Regarding the hard drive, according to the manufacturer, leaving the power on prolongs its life. Many of my audio friends use it, and I haven't heard of any failures. It's also sometimes recommended to back up to an external hard drive.