Synology Network Attached Storage FX2421 24 bay expansion FlashExpansion FX2421 (Diskless) Retail

MPN
FX2421
Applied Models
Supports creating volumes across different units
FS series:FS6400, FS3600, FS3400
Notes
Expansion Unit FX2421 can only be used with identical expansion units.
DSM version requirement: 6.2.3-25426-2 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
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
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^oC to 35^oC (32^oF to 95^oF)
Storage Temperature
-20^oC to 60^oC (-5^oF to 140^oF)
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^oC, Humidity: 58.2-61.8%

Certification
UL

Environment and Packaging
Environment
RoHS Compliant
Packaging Content
Main Unit X 1
Accessory Pack X 1
AC Power Cord X 2
Expansion Cable: MiniSAS-HD X 1
Quick Installation Guide X 1
Optional Accessories
2.5" SATA SSD: SAT5200
Rail Kit Sliding: RKS1317