Accommodate massive storage growth
Expand your Synology rackmount SAS storage 12 bays at a time, for up to 84 additional 3.5"/2.5" SAS/SATA drives over a maximum of seven Synology RX1222sas expansion units.1 Add volumes when and where you need without interrupting services, thanks to Synology DiskStation Manager (DSM)’s online volume expansion and powerful volume management options.
Easy setup and management
Connect the RX1222sas through the included expansion cable and start managing the additional storage in minutes using Storage Manager and other intuitive tools in Synology DSM. Online volume expansion enables you to add a new volume or expand RAID volumes without reformatting drives.
Fast and stable with Synology drives
Achieve higher levels of reliability with Synology’s SAS and SATA enterprise drives. Backed by hundreds of thousands of hours of rigorous testing, they ensure maximum integration and optimal performance when paired with your Synology deployment.
Built with service uptime in mind
RX1222sas’s hot-swappable drive trays, fans, and power supplies reduce the impact of maintenance on service availability, and redundant power supply units keep your system online even if one power source fails.
Synology Replacement Service (SRS)
SRS provides free advance replacement units as early as the next business day in selected regions, maximizing the service uptime for your mission-critical storage and ensuring your business continuity
More information: Power | Power supply unit (PSU) capacity | 500 W |  | Number of power supply units | 1 | | Redundant power supply (RPS) support | Yes | | Power consumption (typical) | 82.56 W | | Power consumption (max) | 194.4 W | | AC input voltage | 100-240 V | | AC input frequency | 50-60 Hz | Operational conditions | Operating temperature (T-T) | 5 - 35 °C | | Operating relative humidity (H-H) | 5 - 95 % | | Storage temperature (T-T) | -20 - 60 °C | | Storage relative humidity (H-H) | 5 - 95 % | Other features | Compliance certificates | BSMI, CE, EAC, Federal Communications Commission (FCC), KC, RoHS, UKCA | Design | Device class | Small & Medium Business | | Chassis type | Rack (2U) | | Internal | Yes | | Product colour | Black | | LED indicators | Yes | | Cooling | Yes | | Number of fans | 4 fan(s) | | Noise level | 54.5 dB | | Fan diameter | 80 mm | | Rack rails | Yes | | Compatible rack width | 19 " | | Compatible products | SA3610, SA3600, SA3410, SA3400 | Ports & interfaces | SAS host port | Yes | | Number of SAS host ports | 2 | Storage | Storage drives installed | Yes | | Installed storage drive type | HDD+SSD | | Number of storage drives installed | 12 | | Total installed storage capacity | 144 TB | | Supported storage drive types | HDD & SSD | | Number of storage drives supported | 12 | | Maximum supported storage capacity | 192 TB | | Storage drive capacity | 12000 GB | | Storage drive interface | Serial ATA, Serial Attached SCSI (SAS) | | Storage drive size | 2.5/3.5 " | | Supported storage drive interfaces | SAS, Serial ATA | | Storage drive sizes supported | 2.5,3.5 " | | Hot-swap drive bays | Yes | Packaging content | Cables included | AC, miniSAS | | Power cables quantity | 2 | Weight & dimensions | Width | 430.5 mm | | Depth | 692 mm | | Height | 88 mm | | Weight | 13500 g |
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