The BUFFALO LinkStation 220 4TB 2-Bay NAS is a versatile and user-friendly network storage solution. With effortless installation, simply connect the LinkStation to your router and enjoy shared network storage for all your devices. It is compatible with both Windows and macOS, and Buffalo’s US-based support is available 24/7 for installation walkthroughs. The best part is that you can enjoy a subscription-free personal cloud, allowing you to store, back up, and manage all your videos, music, and photos without paying any monthly fees. The LS200 is purpose-built for data security, featuring a closed system to reduce vulnerabilities from third-party apps, SSL encryption for secure file transfers, and RAID for redundancy. You can also back up multiple computers and devices with the included NAS Navigator management utility and PC backup software. Additionally, you can securely share files with family and friends by configuring individual access restrictions for folders. Say goodbye to searching through different external drives or cloud accounts as this NAS allows you to securely centralize your data. The BUFFALO LinkStation 220 comes with a total capacity of 4TB with two drive bays. It ships in RAID 1 mode (automatic backup and 2TB usable capacity), but you have the option to set it to RAID 0 to utilize the full 4TB capacity.