Designed for reliable data storage, SA3400D 12-Bay Active-Passive NAS Enclosure from Synology is a 2 RU rackmount server that helps minimize downtime with two controller nodes in an active-passive configuration, which allows for memory and cache protection whereby all data is synced from the active to the passive node, enabling efficient minute-level failover and minimize downtime. This unit has 12 drive bays, each of which natively supports 3.5" SAS hard drives and 2.5" SAS SSDs. Should users need to expand the overall capacity of their SA3400D, two mini-SAS ports can each accommodate one RXD1219sas expansion unit. Between the NAS and two expansion units, up to 36 drives are supported.





The SA3400D is powered by dual 2.1 GHz Intel Xeon D-1541 8-Core processors (one per controller) and 16GB of DDR4 ECC RAM (8GB per controller) that can be upgraded to a total of 128GB (64GB per controller). Each controller has four DIMM slots and each slot supports up to 16GB. Network connectivity is achieved via the two 10 Gigabit Ethernet ports (one per controller) or four Gigabit Ethernet ports (two per controller) with failover support, which helps to provide redundancy in the case that a LAN connection malfunction occurs on one port. In addition, link aggregation helps to increase connection speeds beyond the limits of a single network port or cable. If you're looking to expand this NAS, there are two PCIe Gen 3.0 x8/x8 slots (one per controller) that support 10/25GbE network cards.





The SA3400D runs on the DiskStation Manager (DSM) operating system, which helps simplify managing your NAS, as well as accessing and sharing data. A variety of RAID modes are supported, which help provide users with data redundancy, speed, or a combination of both. Supported RAID modes include RAID 0, 1, 5, 6, 10, Basic, and F1. For those who do not require a RAID, JBOD is also available, allowing each drive bay to be individually utilized.





Synology has engineered the SA3400D to be energy efficient. Not only does it offer two 60 x 60mm fans to help keep the system running cool, the server also supports numerous scheduled power on/off cycles and hard drive hibernation to further minimize power consumption and operation expenses. The SA3400D operates using redundant 500W power supplies on 100-240 VAC at 50/60 Hz and includes an accessory pack and two AC power cords. Protection is provided by a limited 5-year warranty.