Synology Expansion Unit FX2421 24-Bay 2.5" Bays 2x MiniSAS

Synology Expansion Unit FX2421 24-Bay 2.5" Bays 2x MiniSAS

Expansion Unit FX2421

On-the-fly storage capacity expansion for Synology FlashStation.

24-bay 2.5" expansion unit for Synology FlashStation

Expand your Synology FlashStation1 with Expansion Unit FX2421 for 24 additional 2.5" drive bays whenever needed. Without additional software configuration, FX2421 is immediately ready for use when connected to Synology FlashStation. FX2421 expansion units can also be used as a dedicated and rapidly accessible local backup destination.

Expand FlashStation with Synology SAT5200 SSD

Synology enterprise-grade SAT5200 SATA SSD, developed in tandem with FX2421, provides proven interoperability and high reliability through rigorous validation and compatibility testing with Synology expansion units. Combine SAT5200 drives with Synology FlashStation and FX2421 for a highly reliable and integrated storage setup, and receive long-term Synology updates and support.

High-performance data transmission

The high-speed expansion cable provided with FX2421 enables high bandwidth connectivity for maximum data throughput between your Synology FlashStation and Expansion Unit. Drives in FX2421 operate with minimum data latency, as if installed directly on your Synology FlashStation, allowing you to take advantage of high SSD I/O performance.

High-reliability design, easy hardware setup

The FX2421 is a highly reliable and thoroughly tested expansion unit that comes with hot-swappable drive trays and modularized components. Redundant power supplies and system fans can be replaced with ease to ensure maximum service uptime. The optional RKS1317 sliding rail kit provides fast rack fixing lock support for quick and secure rack cabinet installation.

Storage

Drive Bays

24

Compatible Drive Type

2.5" SAS HDD
2.5" SAS SSD
2.5" SATA SSD

Maximum Internal Raw Capacity

92.16 TB (3.84 TB drive x 24) (Capacity may vary by RAID types)

Hot Swappable Drive

Yes

RAID Management through Synology DSM

Yes

Notes

"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

SAS IN-port

1

SAS OUT-port

1

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

14.5 kg

Rack Installation Support*

4-post 19" rack (Synology Rail Kit - RKS1317)

Notes

The rail kit is sold separately

Power

Power Supply Unit / Adapter

500 W

AC Input Power Voltage

100 V to 240 V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption*

190.99 W (Access)

British Thermal Unit

651.68 BTU/hr (Access)

Redundant Power Supply (for RP model)

Yes

Notes

Power consumption is measured when it is fully loaded with HGST 1.8TB HUC101818CS4204 hard drive(s).

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

System Fan

80 mm x 80 mm x 4 pcs

Easy Replacement System Fan

Yes

Noise Level*

57 dB(A)

Notes

Noise Level Testing Environment: Fully loaded with Toshiba 600GB AL14SEB060N 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%