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NETGEAR ReadyNAS 2100 1U (4x2TB) w/ 5 yr warranty (RNRX4420-100NAS)

  • 1.6 GHz Intel Atom dual-core processor
  • Secure SMB cloud storage solution
  • XRAID2 for easy expansion
  • iSCSI support for virtualization

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the Netgear Inc. RNRX4420-100NAS




Port RJ-45
2 x 10/100/1000M
Port USB
3 x USB2.0
HDD Interface
4 x SATA (4 x Bay)


Form Factor
1U rack-mount
Operating System
NETGEAR RAIDiator Operating System
Intel advanced embedded processor
Default/ Max. Memory
1 GB ECC Memory

Hard Drive Performance

Included HDD Capacity
4 x 2000GB
X-RAID2 automatic single-volume online expansion
Multiple-volume support for RAID 0, 1, 5
Background sync and SmartSync resume
Life support mode
Hot swap disks
Hot spare disk support


Supported Protocols
CIFS/SMB for Windows
AFP 3.1 for Mac OS 9/X
NFS v2/v3 for Linux and UNIX
HTTP/S for Web browsers
Rsync and secure rsync
Print sharing
iSCSI target support for Windows, Mac and UNIX/Linux initiators
Performance tuning options
Device health status
System configuration backup and restore
Email alerts and event logs
Network UPS monitoring


- 220W server-rated AC power supply
- Input: 100 – 240V AC, 50/60 Hz


Simultaneously supports NAS and iSCSI SAN for database and server virtualization applications

Reliable, automatic, data protection with offsite options

Cross-platform support for Windows, Macintosh and UNIX/Linux systems

High-density 1U rack-mount, extreme energy efficiency and simple serviceability

For the Hard drives compatibility, please go to

The firmware that is needed for Netgear NAS products to be compatible with 3TB drives (assuming it did not come with a 3TB drive) is RAIDiator 4.2.17. For more details, please go to this link below to download this software.

Dimensions / Weight

16.9" x 12.5" x 1.7"
22 lbs.


0°C - 40 °C
20-80% Humidity (non-condensing)
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Netgear Inc. RNRX4420-100NAS

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  • Stephen B.
  • 1/6/2011 2:43:00 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

5 out of 5 eggsGreat Backup SAN System

Pros: Great feature set, reliable, fast, iSCSI great, price.

Cons: Poor documentation

Other Thoughts: We've purchased several of these systems for backup appliances and they have been working great. I haven't had any issues with the iSCSI after the firmware was updated. Excellent unit for the price!

1 out of 1 people found this review helpful. Did you? Yes No

  • Craig C.
  • 9/7/2010 4:18:34 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsNot bad so far

Pros: Price, supported protocols, speed, scalable design ... bang for the buck.

Cons: The documentation could be more complete and there are a couple quirks in the sometimes non-intuitive web interface.

Other Thoughts: Still burning in and testing but I'm reasonably impressed so far. If you're looking for a real SMB solution (verses SOHO or home use product) in four figures, you might want to check this one out.

Plugged it in, turned it on, came up with no problem. Joined it to Active Directory, threw a couple hundred gigs of data at it then pulled one of the drives without warning to simulate a drive failure. It sent me an email telling me there was a problem.

With the array degraded, I threw a hundred more gig of test data at it (no noticeable speed loss) and replaced the drive I pulled. It sent me another email that said it found a suitable drive automatically started rebuilding it.

I can't speak to the first reviewer's iSCSI result because I haven't tested that feature yet. But so far, this little (relatively) inexpensive 1U is more than meeting my expectations.

1 out of 1 people found this review helpful. Did you? Yes No

  • Drew V.
  • 8/12/2010 9:07:35 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsHorrible iSCSI support

Pros: Relatively cheap, compared to other 1U SAN products.

Cons: The iSCSI support is horrible. I get disconnects when I generate even moderate write load. Two of my three iSCSI targets were disconnected when I was first formatting them. The iSCSI support is unusable for me. Unfortunately I bought this particular unit specifically for its iSCSI feature.

3 out of 3 people found this review helpful. Did you? Yes No

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