Asustor + Btrfs + R/W cache = data loss risk

[ed]

It's disheartening to hear about your data loss experiences with your Asustor NAS setup. Indeed, combining Btrfs with R/W cache on Asustor systems can pose a significant risk, as you've unfortunately experienced firsthand. While Asustor support may have touted Btrfs as a robust file system, the reality of potential data corruption when using R/W cache demands caution. Considering your situation, migrating to Ext4 could offer a safer alternative, as it doesn't involve the same risks associated with Btrfs and cache usage. Additionally, refraining from employing cache, especially R/W cache, seems prudent to mitigate any further data loss risks. As for your NAS choice, both Synology and TrueNAS offer compelling options. Synology's DS1821+ or DS3622xs+ could be worth considering for their robust hardware and reliable performance, while TrueNAS provides a more DIY approach if you're inclined to build your NAS solution. Ultimately, prioritizing data integrity and reliability should guide your decision-making process.