Synology RX1216SAS/24TB (12 x 2TB RED PRO) 12 Bay Rack Expansion Unit

QuickFind: 723420 Mfr part code: RX1216SAS/24TB-RED PRO
  • Expansion unit only
  • 24TB (12 x 2TB RED PRO Drives Installed)
  • Existing NAS unit required
  • Plug-n-use design for seamless storage space upgrade

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Product Description

Synology RX1216SAS/24TB (12 x 2TB RED PRO) 12 Bay Rack Expansion Unit

Key Features
  • Plug-n-use design for seamless storage space upgrade
  • Redundant data paths & power supplies ensure service uptime
  • SAS and SATA drives for flexible capacity and balanced performance
  • Managed with Synology DiskStation Manager (DSM)
  • Backed with 5-year limited warranty & Synology Replacement Service
Synology RX1216sas delivers an effortless solution for volume expansion and data backup for Synology RackStation RS18016xs+. RX1216sas seamlessly scales up the storage capacity of Synology RS18016xs+ by adding additional 12 hard drives on-the-fly when connected directly with a mini-SAS cable.

Storage Capacity Expansion
When storage capacity on Synology RackStation RS18016xs+ reaches its limit, Synology Expansion Unit RX1216sas provides an easy way to immediately scale up by additional 12 SATA and SAS drives for flexibility and balanced performance. RAID volumes on Synology RS18016xs+ can be expanded directly without having to reformat existing drives, ensuring that service on Synology RS18016xs+ continues during capacity expansion.
Synology RX1216sas can also be used as a dedicated local backup solution for Synology RS18016xs+. When created as a separate volume, Synology RX1216sas provides a great backup solution to RS18016xs+ in case of system failure.
Reliable Plug-n-Use Design
Synology RS18016xs+ securely connects to Synology RX1216sas through dual SAS cables to ensure maximum throughput and connection redundancy. Drives in the connected Synology RX1216sas can operate as though they were internal to Synology RS18016xs+, with no data-retrieval lag. Redundant power supplies also ensure continual service uptime. Synology RX1216sas is managed by Synology DiskStation Manager, with no additional software installation required.
Green & Easy to Manage
Deep Sleep can be manually configured to take effect automatically when the system has been inactive for a period of time. This not only saves energy but also extends the lifespan of the hard disk. RX1216sas will also smartly power on/off with RS18016xs+, so no user intervention is needed to keep this system running smartly and efficiently.

Technical Specification

Synology RX1216SAS/24TB (12 x 2TB RED PRO) 12 Bay Rack Expansion Unit

Expansion / Connectivity

Expansion Bays 12 (total) / 0 (free) x hot-swap - 2.5" / 3.5" shared
Interfaces 2 x SAS (input) ¦ 2 x SAS (output)

Manufacturer Warranty

Service & Support Limited warranty - 5 years
Service & Support Details Limited warranty - 5 years


Device Type Hard drive array
Enclosure Type Rack-mountable - 2U


Installed Devices / Modules Qty 12
Supported Devices / Modules Qty 12
Supported Drives SATA-600 / SAS


Total Array Capacity 24 TB
HDD Array External Interface SAS

Storage Controller

Interface Type SATA 6Gb/s / SAS
Data Transfer Rate 600 MBps
Max Storage Devices Qty 12

Hard Drive

Type HDD - hot-swap
Capacity 12 x 2 TB


Features Built-in 4 cooling fans
Compliant Standards FCC Class A certified, RoHS, BSMI Class A
TAA Compliant Yes


Power Device 2 x internal power supply - hot-plug
Max Supported Qty 2
Power Redundancy Yes
Power Redundancy Scheme 1+1
Voltage Required AC 120/230 V - 50 - 60 Hz
Power Consumption Operational 248 Watt
Power Provided 500 Watt

Dimensions & Weight

Width 43 cm
Depth 69.2 cm
Height 8.8 cm
Weight 18 kg

Environmental Parameters

Min Operating Temperature 5 °C
Max Operating Temperature 35 °C
Humidity Range Operating 5 - 95%

Product Reviews

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Synology RX1216SAS/24TB (12 x 2TB RED PRO) 12 Bay Rack Expansion Unit

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Synology RX1216SAS/24TB (12 x 2TB RED PRO) 12 Bay Rack Expansion Unit

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