I purchased a Synology Rackstation RS1221+ shortly after starting a business because I wanted low/no maintenance network attached storage. I've been happy with TrueNAS in my Homelab for years, but for business critical functions like backups I don't have the time or desire to tinker. The Synology has been a great answer to my low maintenance requirement. My minor complaint after a year with the Rackstation is the noise of the stock fans. I recently had the top off to upgrade RAM/Networking and took the opportunity to slap in a set of Noctuas (Noctua NF-A8 PWM 80mm). Below are a few photos of the fan connections and headers along with Synology DSM settings.

Noctuas and additional stick of RAM:

Dual SFP+ 10GB networking card:

Synology DSM did not complain about the fan swap. I modified the fan profile in Hardware & Power > Fan Speed Mode to cool. The settings are outlined below in the control panel:

This is the menu where you can modify the Synology fan settings:

The fan swap resulted in less overall noise and only slightly higher drive/cpu temps. My six Ironwolf Pro drives (16TB) range between 32-39C and the CPU sits around 50-55C. Ambient temperature in the office is usually 67F with humidity regulated to ~50%.

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