Storage expansion and accessories Expansion Unit PAX224 Expansion Unit PAX224
Expansion Unit PAX224 Performance storage expansion for your production workloads
Features Specs
Scalable capacity for evolving needsAdd 24 additional NVMe storage bays with a single PAX224 for more fast, reliable storage capacity in the PAS7700. Download the datasheet
Maximize data service uptimePAX224 expansion units offer a rock-solid foundation for enterprise data. With support for active-active hosts and featuring redundant power supplies, hot-swappable drive bays, and modular components, it delivers reliable performance in data center environments.
Scale data services with business growthAll-NVMe storage expansion compliments the PAS7700’s dual-controller performance architecture. Deploy additional high-bandwidth, low-latency capacity for new and existing workloads with PAX224 direct-connect expansion units.

Performance backed by Synology drives

Synology Enterprise Series U.3 NVMe SSDs are purpose-designed for the active-active architecture of the PAS7700, offering consistent performance, low latency, and enterprise-grade endurance.

SSD
Enterprise Series U.3 NVMe SSD
Synology has you coveredThe PAX224 is backed by Synology's 5-year limited warranty1, including technical support and hardware replacement services to maximize your return on investment and ensure continued high-quality performance.Learn moreNotes:The warranty period starts from the date of purchase as stated on your purchase receipt. Visit https://www.synology.com/company/legal/warranty for more information.Availability of the PAX224 expansion unit is planned for late Q3 2026.
Hardware Specifications
Storage
Storage
 Drive Bays 24
Drive Type (See all supported drives) 2.5” U.3 NVMe SSD
Hot Swappable Drive*
Notes Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.
External Ports
External Ports
 Expansion Port 2
Appearance
Appearance
 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 17.6 kg
Rack Installation Support 4-post 19" rack (Synology Rail Kit - RKS-02)
Power
Power
 Power Supply Unit / Adapter 800 W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption 248.63 W (Access)
British Thermal Unit 847.83 BTU/hr (Access)
Redundant Power Supply
Notes Power consumption tested with Synology SPU7200D-1920G
Temperature
Temperature
 Operating Temperature 0°C to 35°C (32°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Operating Humidity 8% to 80% RH
Storage Humidity 5% to 95% RH
Others
Others
 System Fan 60 mm x 60 mm x 4 pcs
Easy Replacement System Fan
Noise Level* 66.8 dB(A)
Notes Noise level tested with Synology SPU7200D-1920GB
Certification
Certification
  • UL
  • FCC
  • CE
  • BSMI
  • UKCA
  • EAC
  • VCCI
  • RCM
  • KC
Warranty
Warranty
 5 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment & Packaging
Environment
Environment
 RoHS Compliant
Packaging Content
Packaging Content
  • Main Unit X 1
  • Rail Kit Sliding: RKS-02
  • C13 to C14 Power Cord X 2
  • Accessory Pack X 1
  • Expansion Cable: Mini-SAS HD X 2
Notes: Model specifications are subject to change without prior notice. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.