Expansion Unit RX6025sas

High-density storage expansion for Synology HD6500 servers

Massive storage expansion

Accomodate growing storage demands by adding 60 additional drives to your HD6500 in minutes. Support for up to four expansion units enables seamless storage growth without costly disruptions. Support for SAS multipathing provides up to double the performance when deploying multiple expansion units, while online storage expansion and the comprehensive management tools in Synology DiskStation Manager (DSM) streamline setup and ongoing management.

Designed for service uptime

Tackle large-scale applications while maintaining the highest level of service availability thanks to clever hardware solutions.

SAS multipathing

SAS multipathing maximizes resiliency against hardware malfunctions by providing alternate physical paths, allowing the system to reroute data when the primary interface or connection fails.

Redundant components

Modular drive trays and system fans reduce the impact of maintenance on service availability, allowing for easy and quick replacement. Redundant power supply units provide continuous data availability even during power source failures.

Plug-and-play deployment

Minimize downtime when expanding your storage infrastructure with online storage expansion, which allows you to add new volumes or expand RAID volumes on the RX6025sas without affecting services on the HD6500.

Achieve peak performance with Synology drives

Synology drives’ finely tuned firmware ensures maximum integration with Synology hardware and software. Backed by a testing regimen that replicates heavy data center use, they deliver optimal performance and reliability even when tackling the most demanding applications.

HDD

Enterprise Series 3.5" SAS

Synology has you covered

The RX6025sas is backed by Synology's 5-year limited warranty,¹ including technical support and hardware replacement services to maximize your return on investment and ensure continued high-quality performance.

Learn more

Notes: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.

Hardware Specifications
Applied Models
Applied Models	Supports creating volumes across different units	HD6500
	Notes	DSM version requirement: DSM 7.2.2-72806 Update 2 or later version. To have better performance, we recommend creating storage volumes physically located within the same NAS or Expansion Unit, rather than creating volumes across your NAS and Expansion Unit.
Storage
Storage	Drive Bays	60
	Compatible Drive Type* (See all supported drives)	3.5" SAS HDD 2.5" SATA 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. To install 2.5" SATA SSDs, optional 2.5" drive trays (R5) must be purchased separately. Learn more "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
External Ports
External Ports	Expansion Port	2
Appearance
Appearance	Size (Height x Width x Depth)	176 mm x 438 mm x 985 mm
	Size (Height x Width x Depth) (with server ears)	176 mm x 482 mm x 1020 mm
	Weight	33.9 kg
	Rack Installation Support*	4-post 19" rack (Synology Rail Kit - RKS-03)
Power
Power	Power Recovery	Synchronized with the Synology RackStation
	Power Supply Unit / Adapter	1300 W
	AC Input Power Voltage	200V to 240V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption	811.8 W (Access) 231 W (HDD Hibernation)
	British Thermal Unit	2768.24 BTU/hr (Access) 787.71 BTU/hr (HDD Hibernation)
	Redundant Power Supply
	Notes	Power consumption is measured when it is fully loaded with Synology HAS5300-8T hard drive(s).
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)
	Relative Humidity	5% to 95% RH
Others
Others	System Fan	80 mm x 80 mm x 4 pcs
	Easy Replacement System Fan
	Noise Level*	61.7 dB(A)
	Notes	Noise Level Testing Environment: Fully loaded with Synology HAS5300-8T hard drive(s) 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%
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 RKS-03 X 1 Accessory Pack X 1 AC Power Cord X 2 Expansion Cable: Mini-SAS HD X 2 Quick Installation Guide X 1
Optional Accessories
Optional Accessories	Enterprise Series 3.5" SAS HDD: HAS5300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series
	Notes	To install 2.5" SATA SSDs, optional 2.5" drive trays (R5) must be purchased separately. Learn more

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.