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Synology 4 Bay NAS DS420j (Diskless), 4-Bay; 1GB DDR4

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98 ratings

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4-bay home NAS with over 60 TB raw capacity support suitable for data backup and file sharing
64-bit 4-core 1 4 GHz processor and 1 GB DDR4 memory
Over 112 MB/s encrypted sequential reading and writing throughput
Easy-to-deploy surveillance solution that supports up to 16 IP cameras
Energy-saving design with only 7 88 W consumed in hibernation mode

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Product Information

Technical Details

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Other Technical Details

Brand

Synology

Item Model Number

DS420j

Product Dimensions

23.01 x 16.79 x 18.39 cm; 1.5 Kilograms

Item Dimensions L x W x H

23 x 16.8 x 18.4 centimetres

Item Weight

1.5 kg

Manufacturer

Synology

ASIN

B083HJY9T8

Date First Available

5 March 2020

Additional Information

Customer Reviews

98 ratings

4.6 out of 5 stars

Best Sellers Rank

22,079 in Computers (See Top 100 in Computers)
44 in Network Attached Storage

Warranty & Support

Amazon.com.au Return Policy:You may return for a full refund for the price you paid within 30 days of delivery any new computer purchased from Amazon that is "dead on arrival", arrives in damaged condition or is still in unopened boxes. Amazon may test or inspect returns. If Amazon finds a customer has misrepresented the condition of a return, Amazon may impose a fee equal to up to 15 percent of the merchandise sales price. Any returned computer that is damaged through customer misuse, missing parts, or in unsellable condition due to customer tampering may result in the customer being charged a restocking fee based on the condition of the computer. This policy does not restrict or alter any non-excludable statutory consumer protections or rights you may have, including under the Australian Consumer Law. To view full returns terms including return instructions, merchandise-specific requirements and exclusions see our Returns Policy Page. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

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Product description

DS420j is a 4-bay desktop NAS designed for home users' data backup and file sharing It supports various networking protocols multiple RAID configurations and diverse add-on packages effortlessly enabling cross-platform file synchronization and sharing on a private cloud DS420j is backed by Synology’s 2-year limited

From the manufacturer

Synology DiskStation DS420j, all-in-one private cloud solution for homes

Your own private cloud

DiskStation offers big storage capacity for housing your movies, photos, or important data, making it easy to create your own private cloud and maintain complete control over your data. Synology’s DiskStation Manager (DSM) operating system simplifies the process of backing up your computers, accessing your files from anywhere, storing multimedia, and more.

*Performance figures may vary depending on the environment, usage, and configuration.

At a glance:

Up to 64 TB of storage
Over 112 MBps encrypted reading and writing*
Powered by DiskStation Manager (DSM)
Anywhere access with mobile apps


Easy file access Access files on your Synology NAS over the Internet using QuickConnect. DiskStation allows you to synchronize your files across multiple devices or even across several locations, so you never have to go without your data.	Personal multimedia server Turn your DiskStation into a home media hub to store your movies, TV shows, pictures, and MP3s. Centralize and organize your photos and videos in your private cloud for easy sharing and management.	Bulletproof backup Control your data and keep your files safe. DSM makes it easy to backup files for all your devices and avoid accidental data loss. You can even backup data from your DiskStation to other devices or any major cloud storage provider.	24/7 security solution Every DiskStation comes ready to be configured for home or office security. Just connect your IP cameras and use DiskStation to manage, monitor, and save all of your security footage. All without any monthly fees.

Total Protection

Synology devices are built with security in mind. Every DiskStation comes equipped with tools like Auto Block and Two Factor Authentication to help keep data safe and reduce the risk of unwanted parties from accessing the system. For even more security, DiskStation supports military-grade encryption technology giving you amazing protection.


	DS420j	DS220j	DS120j
Drive Bays	4	2	1
Max Raw Storage Capacity	64 TB (16 TB drive x 4) (Capacity may vary by RAID types)	32 TB (16 TB drive x 2) (Capacity may vary by RAID types)	16 TB (16 TB drive x 1) (Capacity may vary by RAID types)
CPU	4-core 1.4 GHz	4-core 1.4 GHz	Dual Core 800 MHz
Hardware Encryption Engine	✓	✓	✓
Memory	1 GB DDR4	512 MB DDR4	512 MB DDR3L
1GbE LAN Port	1	1	1
USB Port	2 x USB 3.0	2 x USB 3.0	2 x USB 2.0
Supported RAID Type	Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10	Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1	Basic
Maximum IP cameras	16	12	5
Power consumption	21.71 W (Access), 7.88 W (HDD Hibernation)	12.46 W (Access), 5.06 W (HDD Hibernation)	9.81 W (Access), 4.68 W (HDD Hibernation)

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Customer reviews

5 star		78%
4 star		15%
3 star		3%
2 star		1%
1 star		3%

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Amazon Customer

Excelente solución

Reviewed in Mexico on 11 November 2020

Verified Purchase

Me encanto este NAS. He tenido otro de otra marca y la verdad nada que ver con este Synology. Extremada fácil de usar, todas las aplicaciones gratuitas dan una solución excelente. Lo uso principalmente para nube personal y trabaja excelente de donde me encuentre, oficina o de viaje. Se los recomiendo para uso personal y pequeños negocios sin dudarlo.

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racerx11725150

入門編以上の実力

Reviewed in Japan on 18 June 2020

Verified Purchase

自宅NAS初級者向けの割に高機能。
但し、HDDの診断やパリティチェックに数日掛かることが難点。
買う前に構築時間が長く掛かる覚悟が必要だった。

7 people found this helpful

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geardog

Very elegant solution for a small buisness or home applications.

Reviewed in the United States on 29 August 2020

Verified Purchase

Perfect solution for the smaller businesses or home. Gives you a full set of feature once only available to large enterprise without the price tag. Share files on this drive and stop emailing documents to each other. End the nightmare of running around making backups of your workstations, as this will give you network drives for a full set of operating systems. A Linux based operating system gives you high availability and reliability.

Some people do well with the 2 bay unit, but going to 4 bays lets you increase your capacity and support more drives. It is cheaper to populate the unit with 4x6TB for a lower price than 2x12TB. This 4 bay unit that will support various flavors of RAID. I run mine with 4 Western Digital Red Pro 6TB 3.5inch 256mb cache operating at 7200 rpm in a RAID 5 configuration netting me 18TB of storage with 6TB of RAID parity backup for a total of 24TB of raw storage.

There is a choke point on the gigabit Ethernet port with a published 112 MB/s encrypted sequential reading and writing throughput via the device and your network. For most people however, you will never see it if you don't do huge file transfers often much larger than a PC's hard drive size.

Synology has a good suite of apps to tailor your unit to your specific needs. I run an app that lets me run my unit my personal "cloud" and I can access my files remotely, and link them with an app for both the iPhone & Android. it will go to sleep, and spin down the drives when not in use. Reduces the runtime-hours and maximizes the service life.

As an IT professional and large campus network engineer, I find it as an elegant small package. For those who don't want to have to constantly pay an IT professional, the beginning user will find Synology's support page sufficient to run the unit. There is a lot of documentation and "how-to" videos out there so you can confidently operate the unit efficiently without too much trouble.

Conclusion: I would highly recommend this unit and consider this over the other 2 units. It is a solid item, and will reduce your headache and labor costs. Once you get it set up, it can just go with minimal effort.

15 people found this helpful

Jeffrey J. Miller

Superior in Every Way

Reviewed in the United States on 4 October 2020

Verified Purchase

I had a Buffalo LS441d populated with 4x2tb HDD in RAID5 and it seemed to run fine, albeit a bit slow. It served mainly as a Mac Time Machine backup station (5 Macs) and a bit of excess file storage. A few weeks ago it reported #3 drive failure, so I put in a new HDD, and it reported as a failure, so I put in another HDD, and it too reported as a failure. Switching the drive order, the nonetheless the #3 HDD was always a failure, so I could only conclude the #3 SATA bus had failed. Thus a new NAS.

After much research it appeared the Synology DS420j was the most economical solution. It arrived a day early so I populated it with the 4-2tb HDDs from my Buffalo and connected it up. Went through the setup routine and it went ahead and automatically formatted them in Synology's Hybrid RAID format. In the future, this will allow me to swap out any HDD with one of a larger capacity to increase the RAID volume size. I may now ditch my 2 spares for something with greater capacity, we shall see. Reportedly it will accept up to 16tb HDDs.

The UI is very robust, but it not intuitive. There were multiple steps necessary in order to setup the Time Machine folder, but it wasn't onerous and there was a simple tutorial ready on Synology's website. Performance wise it is hands down superior to the Buffalo as I'm seeing markedly faster Time Machine backups and file transfers, even simultaneous Time Machine backups perform materially quicker than with the Buffalo. I suspect this is due to the 4-core CPU and a gig of RAM, as both the DS420j and the Buffalo unit are 1g ethernet. The UI has a performance monitoring widget and even when being hit with 4 Macs backing up simultaneously the CPU never exceeded 60% and RAM utilization stayed at or below 50%. Another plus is that it is SMART aware as it will periodically SMART test the HDDs and send audio and email alerts to any impending HDD degradation issues.

As for noise, it is quieter than my HP LaserJet. Presently it is setup in default fan mode (quiet), but it doesn't report any heat issues.

My one quibble is that even though the HDDs are reported to be hot-swappable, the access is through the rear of the case, so it is not really convenient to swapping a drive while the unit is running unless it is setup in a unique location.

4 people found this helpful

Just-Mike92

Buy it!

Reviewed in the United States on 11 December 2020

Verified Purchase

Was in the market for a NAS since FreeNAS didn't work well for what I wanted. After countless hours working on it I gave up and started looking into a Dedicated NAS. I've heard of Synology before on various tech YouTube channels but their hardware is more expensive than some other brands. But at the same time I wanted something that would be reliable and had a built in interface and OS instead of just connecting a box to my router through USB. Tried that in the past and even on USB 3.0 it was painfully slow. So I ended up deciding on this. Wasn't priced too unreasonably and had 4 bays for drives. I'm pretty computer and network savvy but this was so simple to setup that even someone who isn't wouldn't have many problems if any at all. And if they did the Synology tech support is great as I did have to contact them once in regards to an issue that I had which ended up being due to a faulty drive causing problems. I have mine loaded with four 6TB drives and for home use you really can't beat this model. I especially like the fact that even though it's not a high end unit I can still connect my UPS to it and have it shut down if the power goes out to help prevent data loss in that event. I really can't recommend this product enough.

One person found this helpful

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Synology 4 Bay NAS DS420j (Diskless), 4-Bay; 1GB DDR4

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Product Information

Technical Details

Additional Information

Warranty & Support

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Product description

From the manufacturer

Your own private cloud

At a glance:

Easy file access

Personal multimedia server

Bulletproof backup

24/7 security solution

Total Protection

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