Synology DX525 5-Bay 12tb Expansion Enclosure 3x4tb Seagate IronWolf HDD Drives Installed

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Synology Burn-In Tested Hard Drive Storage Array Models and Configurations
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12tb - 12000gb - 3 x 4000gb 3.5" Seagate HDD Drives Installed
 
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CLICK HERE FOR 16tbClick Here To View the Synology DX525 External Expansion Drive in a 16tb 4x4000gb Configuration with Similar Installed Installed Drives.
CLICK HERE FOR 10tbClick Here To View the Synology DX525 External Expansion Drive in a 10tb 5x2000gb Configuration with Similar Installed Drives.
VIEW ALL CONFIGURATIONSClick Here To View All Available Synology DX525 External Expansion Drive Fully Assembled and Tested Populated Configurations that Include Installed Drives.

 
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Synology DX525 External Expansion Drive 12tb 5-Bay Desktop Multimedia / Power User / Business Expansion Enclosure 3x4tb Seagate IronWolf ST4000VN006 3.5 5400rpm SATA 6Gb/s HDD NAS Class Drives Installed - Burn-In Tested DX525 External Expansion Drive
Synology DX525 External Expansion Drive 5-Bay Expansion Enclosure Burn-In Tested ConfigurationsSynology DX525 External Expansion Drive 5-Bay Expansion Enclosure Burn-In Tested ConfigurationsSynology DX525 External Expansion Drive 5-Bay Expansion Enclosure Burn-In Tested ConfigurationsSynology DX525 External Expansion Drive 5-Bay Expansion Enclosure Burn-In Tested ConfigurationsSynology DX525 External Expansion Drive 5-Bay Expansion Enclosure Burn-In Tested ConfigurationsSynology DX525 External Expansion Drive 5-Bay Expansion Enclosure Burn-In Tested Configurations
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Device TypeThis is the type of device - (N)etwork (A)ttached (S)torage, (D)irect (A)ttached (S)torage, (N)etwork (V)ideo (R)ecorder, or Expansion Enclosure. Expansion Enclosure
Environment Multimedia / Power User / Business
Form Factor Desktop
Number of Drive Bays 5 Bays
Supported Drive Types 3.5" SATA-HDD 2.5" SATA-SSD
Max Internal Storage Capacity 150tb
USB 3.1 Gen-1 Type-C Ports 1
Synology WarrantyThis device is fully covered under warranty by Synology.CLICK FOR MORE INFORMATION 3 YearsThis device is fully covered under warranty for 3 years by Synology.CLICK FOR MORE INFORMATION
Device UPC GTIN 846504005291
 
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ASSEMBLED CONFIGURATION SPECIFICATIONS

ALL POPULATED DEVICES ARE FULLY ASSEMBLED AND TESTED PRIOR TO SHIPMENT

 

Number of Installed Drives 3 DrivesInstalled Drive Form FactorPOPular3.5"
Each Installed Drive CapacityPOPular4tb - 4000gbInstalled Drive Speed 5400rpm
Total Populated Storage Capacity 12tb - 12000gbInstalled Drive Interface TypePOPularSATA 6Gb/s
Installed Drive Make and SeriesPOPularSeagate IronWolfInstalled Drive TechnologyPOPularHDD - Standard Mechanical Drive
Installed Drive Model ST4000VN006Installed Drive Cache Buffer 256mb Cache Buffer
Installed Drive Warranty 3 YearsInstalled Drive Class NAS SPECIFIC CLASS DRIVES
WANT MORE STORAGE CAPACITY?
WANT LESS STORAGE CAPACITY?
WANT A DIFFERENT INSTALLED DRIVE OR CONFIGURATION?

CLICK HERE FOR 16tbClick Here To View the Synology DX525 External Expansion Drive in a 16tb 4x4000gb Configuration with Similar Installed Drives.
CLICK HERE FOR 10tbClick Here To View the Synology DX525 External Expansion Drive in a 10tb 5x2000gb Configuration with Similar Installed Drives.
VIEW ALL CONFIGURATIONSClick Here To View All Available Synology DX525 External Expansion Drive Fully Assembled and Tested Populated Configurations that Include Installed Drives.

 
WOULD YOU PREFER DIFFERENT NAS CLASS INSTALLED HARD DRIVES?
CLICK HEREClick Here To View the Synology DX525 External Expansion Drive in a Similar Configuration using NAS CLASS Installed Drives.

WOULD YOU PREFER A SIMILAR CONFIGURATION WITH WESTERN DIGITAL INSTALLED HARD DRIVES?
CLICK HEREClick Here To View the Synology DX525 External Expansion Drive in a 12tb 3x4000gb Configuration with Western Digital Installed Drives.
price $996 synology dx525 external expansion drive 5-bay buy 12tb desktop expansion enclosure 3x4000gb 3x4tb seagate ironwolf st4000vn006 3.5 5400rpm sata 6gb/s hdd drives installed burn-in tested 846504005291 nas headquarters buy network attached hard drive storage array server device das new raid-5 free shipping usa black friday cyber monday week month christmas holiday sale dx525 dx-525 dx525+ nas headquarters buy network attached hard drive storage array server device das new raid-5 free shipping usa black friday cyber monday week month christmas holiday sale 11/26/2025 6:03:39 AM
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$1149
--- $996 ---		CLICK HERE
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SPARE DRIVES and DRIVE TRAYS
Spare Seagate ST4000VN006 4000gb Drive Included
+$118
Spare Seagate ST4000VN006 4000gb Drive with Drive Tray Included
+$158