How to tell whether I have a Duo v1 or Duo v2 or NV+ v1 or NV+ v2

I’ve explained some of the differences in ReadyNAS Duo v2 – A beta tester’s review

To put it simply the v2 has a different CPU, different firmware, different add-ons, different feature set etc. The Duo v1 has an Infrant Sparc CPU whereas the v2 has an ARM CPU. A detailed comparison can be found in the Comparison Charts.

They are very different products and as the RAID format is different you cannot migrate disks across from the v1 to the v2 or vice versa so being able to tell the difference between the two can be quite important.

It can be confusing trying to tell which unit you have.

Firstly note that all Duo and NV+ systems purchased before Nov 13th 2011 will be v1 units.

Secondly note that the v1 units are typically advertised for sale as e.g. ReadyNAS Duo (without the v1) in the name and typically with a model number such as RND2000-100 (diskless Duo v1 unit) whereas the v2 units are advertised as e.g. ReadyNAS Duo v2 (with the v2 in the name) and typically with a model number such as RND2000-200 (diskless Duo v2 unit).

Thirdly and here’s where it gets confusing note that v1 units may have stickers on them saying e.g. RND2000 v2 or even RND4000 v3. Ignore these. These are not the way to tell whether you have a v1 or v2 unit. These stickers when on v1 units typically represent a minor hardware change. This information would be useful for NetGear diagnosing faulty units returned to them in exchange for a replacement, but does not affect the user experience.

If the system is running normally, there are few different ways you can check

1. In RAIDar if you have the v2, the model will show as e.g. “ReadyNAS Duo v2″. If you have the v1, there will be no v2 in the model name. Also in the info (far right) column you will see the RAIDiator firmware version. If you have the v1 the NAS will be running RAIDiator 4.1.x firmware or earlier. If you have the v2 the NAS will be running RAIDiator 5.3.x firmware.

2. Like in RAIDar, the model name and RAIDiator firmware version will be shown in the web-admin interface. However it’s easy to tell the systems apart as their web-interfaces look very different. The v1 interface is shown here: (note if it’s a NV+ v1 and running really old firmware i.e. RAIDiator 3.x, you’ll see an even older web-interface with Infrant not NetGear mentioned as shown in the RAIDiator v3 User Guide found here:, whereas the v2 interface is shown in the software manual for the v2 (

Now if the system is not running or if you prefer you can look at the physical hardware itself.

Here are some key differences (there may be more):

i. The easiest way to tell is that the v1 units will show ReadyNAS Duo or ReadyNAS NV+ on the bottom right hand side of the front of the unit whereas the v2 units will indicate it’s a v2 on the front i.e. ReadyNAS Duo v2 or ReadyNAS NV+ v2. Also the NV+ v1 has a silverly colour, and the Duo v1 has a metallic black colour, whereas the Duo v2 and NV+ v2 have a metallic dark grey colour.

ii. Some, but not all v1 units have drive trays with a circular button (known to get stuck sometimes: If the NAS has trays with a circular button then it is most likely a v1. Newer v1 units and all v2 units ship with drive trays with a rectangular button.

iii. Duo v1 – rear layout

1. Exhaust fan

2. Kensington lock

3. Reset button

4. USB 2.0 ports

5. 1-gigabit Ethernet port with LED status indicators

6. Power adapter socket

vs Duo v2 rear layout

1. Exhaust fan

2. Kensington lock

3. Reset button

4. USB 3.0 ports (with distinctive blue USB 3.0 colour as shown in the diagram above)

5. 1-gigabit Ethernet port with LED status indicators

6. Power adapter socket

iv.) Similarly with the NV+ v1

1. Reset button

2. USB 2.0 ports

3. 1-gigabit Ethernet port with LED status indicators

4. Exhaust fan

5. Power cable socket

6. Kensington lock

and the NV+ v2

1. Reset button

2. USB 3.0 ports (with distinctive blue USB 3.0 colour as shown in the diagram above)

3. Power cable socket

4. 1-gigabit Ethernet port with LED status indicators

5. Exhaust fan

6. Cable clip

7. Kensington lock

NB: the images above are from the NetGear manuals for the units. They are presented together here for convenience to illustrate the physical difference between the two units.

Category: Uncategorized 33 comments »

33 Responses to “How to tell whether I have a Duo v1 or Duo v2 or NV+ v1 or NV+ v2”

  1. Bode Torrez

    I loved your post.Really thank you! Fantastic.

  2. mdgm

    Thanks Bode.

    Always good to get feedback, positive or negative.

  3. Papa Bear

    Good guide. Will help us all in determining which the user has. Noted the much larger fan on the Duo v2 and the use of the Power Brick on the NV+ v2 (versus the internal PSU in the v1.

  4. nichomach

    Excellent post – was nearly misled by the “v2″ on the bottom of one of my units.

  5. Neil

    Surely easiest was is

    DUO – USB ports one above the other or side by side
    NV+ – Does it have a kettle lead at bottom or power connector at top?

    Interesting reading though and explains why when backing up my Duo it lists USB ports as top and bottom when actually they are left or right

  6. Aido

    Great clear and informative post – I too was misled by the “v2″ sticker on the unit. I just wish I had known all this before buying my RND2000, given Readynas Photos II will not be supporting these Sparc based units.

  7. Pay87

    More tips for v2 DUO please!

  8. mdgm

    Pay87, anything particular you’d like a tip about?

  9. RobinO

    I too wish I had understood this and known that they would terminate ReadyNAS photo support, this was one of the prime reason for making the (quite considerable in my opinion) investment in a NetGear NAS drive.

    Do you know of any software out there that will perform a similar function (and doesn’t cost an arm and a leg)?

  10. mdgm

    Thanks for the question Robin,

    There’s a community add-on in development by a community developer. Stay tuned for more information.

    NetGear is also working on a method to migrate Photos data from Photos I on a Duo v1, to Photos II on the Duo v2 or an Ultra/Pro ReadyNAS.

    You may wish to ask this question on the ReadyNAS forums.

  11. RobinO


  12. Lawrie

    Very helpful thanks – the RND4000 v3 threw me – bought pre November 2011 so must be V1 – confirmed by other helpful pointers. Thanks. Lawrie
    PS – Haven’t started to use this until now – the disc 2 failed to synchronise – is this a faulty disc or some other problem. Also – transering 30Gig of music across took about 3 hours – is this normal?
    Any comments would be appreciated

  13. mdgm

    Could be a faulty disk. Connect it to a SATA port on your PC and test it using the disk manufacturer’s diagnostic tool (e.g. SeaTools for SeaGate disks).

    As for transferring the Music was your PC connected to your network using ethernet or wireless? Was a resync taking place when you were doing this transfer?

    Best to open ReadyNAS forum thread(s) to discuss these issues.

  14. Christopher Woods

    @Lawrie you may be experiencing the same problem I encountered when copying 600 GB to our new office NAS — disabling the “Large Send Offload v2″ option, a setting in the Advanced tab of your network adapter, will likely resolve this problem and allow for maximum throughput to your NAS if you’re suffering terribly slow network transfer speeds.

    As a quick test, if you simultaneously copy a large test file (>500 MB, ideally 1 GB or 2 GB) to the NAS whilst copying the music, does the network transfer speed suddenly become much faster whilst the multiple transfers are in progress – reducing back to the previous slow speed when you cancel the test file transfer? If you observe that problem, this may be the root problem. It certainly was for me. :-) (on a mid-2011 iMac, running Windows 7 x64)

  15. BartC

    In researching a firmware update issue I have run across your site. Excellent! This is terrific. Why couldn’t Netgear’s info be as concise as what you have posted here!!

    One of my Duo boxes has that v2 on the bottom sticker, so I was in a quandary as to which gen box I had. However, I have two Duo units and they are both v1 and in spite of that one of them has this model number:
    RND2000-200WWB. So I am not sure what this means. It was running firmware v4.1.8 until I tried to update to 4.1.9 and now it is not running at all. This RND2000-200WWB was a warranty swap out. I don’t know if that has any bearing on the -200 bit.

    One other point: Drive trays: The circular button older type as you point out are known to get stuck sometimes (mine did). If anyone’s units are still under warranty and they stick, I suggest a RMA on the trays. Netgear was very good about that for me.

    Again, thanks for a terrific post!

  16. Indalo


    I have a Netgear ReadyNAS Duo v2 NAS Server (RNDU2120) from the NetgearShop and have added a 2TB Drive. So I have now 4TB. But the Backside is not like you have shown under the rear view of vs Duo v2. My box has TWO 1 Gigabit Ethernet connectors and down of them each the two UBS connectors. Only to show the evolution possibilities in china … (The S/N is (FW: 4.2.15)

    Regards: Indalo

  17. mdgm

    Indalo you have an Ultra 2 with 1 pre-installed 2TB drive not a Duo v2. The Ultra 2 has an Intel Atom CPU and is a more powerful NAS than the Duo v2 (ARM). The Ultra 2 has one USB3 port on the front and two USB2 ports on the rear.

  18. Moon

    Great post! I couldn’t find this info, but someone on the Netgear forum gave me this link. Keep up the good work!


  19. mdgm

    Thanks Moon. Glad this helped.

  20. Cliff

    Can someone please provide me with what the maximum size external USB 2.0 drive which can be plugged into the NV+ (v1) for backup purposes? I’ve been trying to use a 250 GB drive which has been formatted (different tries) FAT32 as well as ext3 with absolutely NO success. The NV+ backup jobs always fail. Is there a better/different format that I should be using?

    I know that I can always hook up the USB drive to my Ubuntu system and use rsync to back it up, but it’s too slow to copy 1TB across the network & write to a USB 2.0 drive.

    I’ve been using a Ubuntu 12.04 system to perform the partitioning/formatting of the drive. I can successfully copy/read/delete files from the Linux machine, but absolutely no luck when connected directly to the NV+.

    Although the NV+ has been extremely reliable, it’s the only repository for some of my digital photos, so I feel very exposed.

    Here’s the info from my NV+ unit on the Frontview Home page:

    Model: ReadyNAS NV+ [X-RAID]
    Serial: XXXXXXXXXXXXX (I can provide the Serial number if required)
    Firmware: RAIDiator 4.1.10 [1.00a043]
    Memory: 256 MB [2.5-3-3-7]
    Volume C: Online, X-RAID, 4 disks, 37% of 2771 GB used

  21. Dkone

    Very informative. My old Readynas seems to match the description of the NV + V1, but it only says NV on the front and does not match the picture of the NV + V1 on Neatgear’s website. Their photo shows and LCD readout screen on the bottom panel of the front of the unit. Mine does not have the LCD panel. For firmware upgrades, should I use the files for +V1?


  22. mdgm

    It should work with disks up to 2TB in capacity. You may still find backups over your network are quicker.

  23. mdgm

    The Infrant ReadyNAS NV is an older model. It is very similar to the NV+ (v1) and runs the same firmware.

  24. Caggers

    #20 Cliff

    Were you given any details in the logs to identify the reason for failure?

    We had issues with backups failing but found that that the user doing the backup was not waiting for the ReadyNas to state that the USB disk is connected (on the front screen) before pressing the backup button.

    I hope this helps…

  25. Glenn Fraser

    I have an NV+ v1 which appears to have a failed PSU. It is still under warranty (by 2 months) and I have been told by Netgear that they will replace the unit under warranty.
    Mercifully I have recently updated to the latest RAIDar and reformatted the drives and all has been working well for the past month or so before the apparent failed PSU so I know what version RAIDar I need.

    My question is can I simply reslot my 4 drives and turn the device on and retain the data already on those drives ?

  26. mdgm

    Hi Glenn,

    I would recommend you install a spare disk (not from your array), update the firmware and then after verifying the update completed successfully, power down, remove the spare disk and follow the migration procedure here:

  27. Vince

    Oh my! Faboulous article and takes away all ambiguity.

    Thank You


    I bought mine in 2009 and not changed anytghing except firmware.
    How long would you roughly estimate before a drive goes?

    I’d prefer to work it until nearly dead as I’m not sure it is worth upgrading with new drives because I might as well buy a new one

    Any useful comments welcome.

  28. Doug

    Excellent article – Amazing that even when I type in RND2210V2 to Netgear it tells me it is a V2. I thought I was losing my mind!

  29. BaGRoS

    To which devices can I move disks from ReadyNas NV+ v2, without losing the contents of my drives?
    ReadyNas NV?!

  30. mdgm

    From a NV+ v2 you can move to another NV+ v2. If only two drives are in the NV+ v2 you could alternatively migrate to a Duo v2.

    It’s also possible to recover data using an ordinary x86 Linux machine.

  31. Supercure

    A breath of fresh air!

    Love this article, clear and concise, no ifs no buts. Great job.

    Can’t believe it takes someone outside Netgear to provide this kind of info.

    Thanks a lot, thanks to mdvm for pointing this URL.

  32. Maarten

    Man, it took me hours to find this post and discover that I have a V1 instead of v2. And I can stop searching for a higher firmware :(
    Thanks for the explanation!!

  33. mdgm

    Actually Supercure, I work for NETGEAR now, but the views expressed on this blog are my own and may not reflect the views of my employer.

Leave a Reply

Why ask?

Back to top