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Expand your Synology rackmount SAS storage 12 bays at a time, for up to 84 additional 3.5'/2.5' SAS/SATA drives with a maximum of seven Synology RX1222sas expansion units. Add volumes when and where needed without interrupting services, thanks to Synology DiskStation Manager (DSM)’s online volume expansion and powerful volume management options.
Connect the RX1222sas through the included expansion cable and start managing the additional storage in minutes with 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.
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.
RX1222sas’s hot-swappable drive trays, fans, and power supplies reduce the impact of maintenance on service availability, while the redundant power supply units keep your system online even in case one power source fails.
At Synology, we are committed to product innovation and quality. Synology guarantees a robust and reliable data management experience with a 5-year limited warranty, providing responsive technical support and hardware replacement services to maximize your return on investment.
Requires DSM 6.2.4-25556 Update 3, 7.0.1-42218 Update 2, or later versions to be installed on the host device.
The warranty period starts from the date of purchase as stated on your purchase receipt. Visit for more information.
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Hardware Specifications
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Applied Models
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Applied Models
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Supports creating volumes across different units |
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Storage
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Storage
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Drive Bays | 12 |
| Compatible Drive Type* |
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| Maximum Internal Raw Capacity | 192 TB (16 TB drive x 12) (Capacity may vary by RAID types) | |
| Hot Swappable Drive* | ||
| RAID Management through Synology DSM | ||
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External Ports
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External Ports
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SAS IN-port | 1 |
| SAS OUT-port | 1 | |
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Appearance
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Appearance
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Size (Height x Width x Depth) | 88 mm x 430.5 mm x 692 mm |
| Size (Height x Width x Depth) (with server ears) | 88 mm x 482 mm x 724 mm | |
| Weight | 13.5 kg | |
| Rack Installation Support* | 4-post 19' rack (Synology Rail Kit - ) | |
| Notes | The rail kit is sold separately | |
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Power
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Power
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Power Supply Unit / Adapter | 500 W |
| AC Input Power Voltage | 100V to 240V AC | |
| Power Frequency | 50/60 Hz, Single Phase | |
| Power Consumption |
194.4 W (Access)
82.56 W (HDD Hibernation) |
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| British Thermal Unit |
663.48 BTU/hr (Access)
281.77 BTU/hr (HDD Hibernation) |
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| Redundant Power Supply (for RP model) | ||
| Notes | Power consumption is measured when it is fully loaded with Synology HAS5300-8T hard drive(s). | |
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Temperature
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Temperature
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Operating Temperature | 0°C to 35°C (32°F to 95°F) |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
| Relative Humidity | 5% to 95% RH | |
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Others
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Others
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System Fan | 80 mm x 80 mm x 4 pcs |
| Easy Replacement System Fan | ||
| Noise Level* | 54.5 dB(A) | |
| Notes | Noise Level Testing Environment: Fully loaded with Synology SAT5200-480G SSD in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8% | |
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Certification
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Certification
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Warranty
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Warranty
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5 Years | |
| Notes | The warranty period starts from the purchase date as stated on your purchase receipt. | |
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Environment & Packaging
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Environment
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Environment
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RoHS Compliant | |
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Packaging Content
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Packaging Content
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