Best 12-Bay SAS Expansion Unit / Mount in Rack

Function:​
Up to fifteen RXD1215sas can be connected to the RC18015xs + double calculation nodes, allowing massive scalability up to 180 units and a maximum gross storage capacity of more than 1PB. The shared storage architecture eliminates the need for data replication in the network, in addition to significantly reducing implementation costs.

Storage:
-    Drive bays 12.
-    Supports drives up to 10TB.
-    96TB internal storage capacity up to 1800TB.
-    Hot Swap.

Ports:
Infiniband port: 1.

Software:
Synology DiskStation Manager (DSM) is a sleek, browser-based operating system running on every DiskStation and RackStation, which makes managing your Synology NAS a breeze. Featuring an intuitive user interface, DSM makes accessing and sharing your data smarter and simpler. Synology's Package Center lets you download and install useful add-on packages designed specifically for individual or business needs, meaning you can enjoy more entertainment in your life or better productivity at work. 

Others:
-   AC Input Power Voltage: 100V to 240V AC.
-    Power Consumption: 248W (Access). 
-    Operating Temperature: 5 a 35 °C.
-    Size: 88 mm X 430 mm X 692 mm.
-    Weight: 18Kg.