The QNAP TS-EC879U-RP offers a variety of security options such as encrypted access, IP filtering, policy-based automatic IP blocking, & more. In addition, full control of the NAS is offered down to the user & folder access rights to determine who can access the NAS & what can or cannot be accessed. The TS-EC879U-RP is packed with security features to stop all unauthorized data access such as AES-256 volume-based encryption. The AES-256 volume-based encryption prevents sensitive data from unauthorized access & data-breach even if the hard drives or the device is stolen. The TS-EC879U-RP is reliable with built-in safety precautions to safeguard all data from any unforeseen problems. With multiple built-in features to guarantee no interruptions to the work flow of a business, the TS-EC879U-RP is an efficient asset. The advanced RAID configurations & hot-swap capabilities are included to give RAID performance, protection & reduced rebuilding time. Moreover, the dual OS embedded on the DOM architecture ensures the system will boot up. If one of the two operating systems fails, the healthy operating system will boot up & operate normally while repairing the failed operating system.