Featuring a quad-core processor, hardware encryption engine, & flawless software integration, DS1515+ is a powerful, expandable 5-bay NAS server that delivers outstanding speed & accelerated data encryption. Easily scalable, the DS1515+ can be equipped with up to 6GB of DDR3 RAM & host up to 90TB of raw capacity with two Synology DX513 units. DS1515+ is powered by a quad-core CPU running at 2.4 GHz. Combined with 2GB of DDR3 RAM (expandable to 6GB), it delivers blazing-fast performance over 450.77 MB/s reading & 396.5 MB/s writing. That much power makes it easy for DS1515+ to multitask & provide consistently high throughput to all connected clients. Encrypting data is essential to a healthy security policy. Equipped with a dedicated hardware encryption engine, DS1515+ is the ideal digital locker for sensitive data; files & folders are encrypted on the fly without any perceived performance loss. DS1515+ delivers encrypted data transmission speeds over 448.71 MB/s reading & 191.12 MB/s writing. Equipped with four Ethernet ports featuring failover & Link Aggregation support, DS1515+ ensures continual network uptime even if LAN connection malfunction occurs on one port, reducing the chance of service disruption & costly downtime. Link Aggregation improves connection speeds beyond the limits of a single network cable or port. DS1515+ boasts USB (Universal Serial Bus) 3.0 & e SATA ports to connect to various kinds of external storage devices, while ensuring fast & efficient file transfer speeds. Support for USB (Universal Serial Bus) 3.0 offers transfer speeds of up to 5 Gbps (about 10 times faster than USB (Universal Serial Bus) 2.0), meaning it takes less time to transfer data to external hard drives, while also consuming less power. DS1515+ provides seamless storage solutions for virtualization environments, including VMware, Citrix, & Microsoft Hyper-V. With VMware v Sphere 5 & VAAI integration, DS1515+ helps offload specific storage operations & optimizes computation power in VMware environments. Windows ODX support speeds up data manipulation as the data transfer is offloaded. i SCSI also lets SMB users consolidate storage into data center storage arrays while providing hosts with the illusion of locally-attached disks.