Hi All,I'm pretty sure there is never going to be a solution to this after trawling through hundreds of posts on this issue - but I thought I would ask anyway.Like many others after I updated my 3x Netgear ReadyNas NV+ units from the 4.1.7 to the 4.1.8 firmware and my transfer rates sharply dropped. They went from:4.1.7Read 25MB/sWrite 19MB/sto 4.1.8Read 5MB/sWrite 16MB/sAfter reading about all the various fixes it seems as though people either reverted back to 4.1.7 or updated to the 4.1.9 beta. I tried both, one on each NAS, the results were:Reverting to 4.1.7Read 12MB/sWrite 17MB/sUpdating to 4.1.9-T6Read 8MB/sWrite 16MB/sTo say the least the results are worrying, these are official updates from a large multinational company with access to state of the art testing facilities. Were these updates not tested? So yes I can revert back to 4.1.7 but I still take a performance hit on what I had before. Obviously the process of reverting does not undo whatever problems the 4.1.8 update introduced. I know RAID systems are not a backup and I could factory default the NV+ and restore from my offsite backup. This is a huge pain though and will take a very long time before I'm back up and running. Has anyone else been in my situation? Experienced similar performance loss? and most importanly found a solution? I can live with a 12MB/s read speed but why should I when I know it is capable of 25MB/s! I just want to get back to where I was before.Hopefully someone out there can help?

Just a quick update... I opened a case with Netgear and they suggested the below. Can anyone verify that this procedure will not cause any data loss? The Netgear tech is saying that an OS reinstall will only change the admin password and IP. Is there any risk involved with this?Its strange everyone that has had this problem has a faster read speed that write still yet mine is the opposite. Would love to hear from anyone who has had this problem or knows more about it.From Netgear....I have read your case and I understand that you are experiencing a problem with your ReadyNas NV+ units wherein you are now getting only 5 MB/s of read speed, but before you can get 25 MB/s. I apologize for the inconvenience you have experienced. Since we are doing this online, it may require a few e-mail exchanges before we can resolve the issue. Please be assured that I will do my best effort to help resolve your case in the least amount of time. It is possible that firmware is causing the issue. Kindly do the following to help us resolve or isolate the problem (you may try it on 1 NV+ first): 1. Please upgrade the firmware/RAIDiator to the latest version 4.2.19. a. Download and save the firmware on your computer. You can get it from this link: http://www.readynas.com/?cat=47 b. Access the FrontView and go to System, Update and Local tab. c. Browse for the firmware and click on Upload and verify image. Then click Perform system update. d. Wait for the update to finish. 2. After a successful firmware update, please do an OS reinstall. This procedure will not erase any data, it will just reset the admin password and network settings. Kindly follow the steps from this link: http://www.readynas.com/kb/faq/boot/how_do_i_re-install_the_firmware 3. If the problem persists, please try to connect the NAS directly to your PC and check if you have same read speed. Here is the link for the steps: http://www.readynas.com/kb/faq/boot/how_do_i_direct-connect_between_readynas_and_pc_or_mac I hope that the steps provided would help resolve the problem. Please feel free to contact us again if you will require further assistance. To answer or close this case: A system generated e-mail will be sent to your e-mail address to inform you that I have responded to your inquiry. Please DO NOT REPLY to the e-mail sent to your e-mail address. Instead, if you want to reply to the message above and have additional query, please click “NO” when the system ask you “Was your problem resolved with the information provided by the NETGEAR representative above?”. When you select “YES”, your case will be closed and a separate e-mail containing a survey link will be sent to you to measure your customer support experience. Thanks again for choosing NETGEAR. Have a great day! Sincerely, Gerry Fulgencio Level 2 Expert NETGEAR, Inc. http://support.netgear.com

4.2.19 is for x86 not Sparc. 4.1.x is for Sparc.Try the other steps.OS re-install leaves data intact. Worth a try.Do you use Windows/Mac/Linux. What protocol do you use to connect to the NAS (e.g. CIFS)?

Hi mdgm,Thanks for your reply, I use Windows 7 Ultimate x64 and I'm using CIFS to connect to the NAS. So you would reccomend trying the OS reinstall? I'll give this a try on one of the NAS units this morning and post back the results. Thanks for the tip on 4.1.x

Also I am using the RAIDiator-4.1.9-T6 firmware to upgrade and then do the OS reinstall, is this the correct version? I've seen other forum members mention success with T2 but I can't find that anywhere?

T6 is a newer beta. I'd stick with that. It includes a major update to the CIFS service (See http://www.readynas.com/forum/viewtopic.php?f=17&t=59222). Do give the OS re-install a try.

NV+ Slow Read in 4.1.7, 4.1.8 & 4.1.9-T6

21 Replies

Replies have been turned off for this discussion

robclarke411
Aspirant
Mar 19, 2012
I should also note that my Write speed is now even higher than before so I have:

Read: 10MB/s
Write: 26MB/s
robclarke411
Aspirant
Mar 20, 2012
Anyone?
mdgm-ntgr
NETGEAR Employee Retired
Mar 20, 2012
What happens if you reboot the NAS, do the read speeds go back up to 38MB/s?
robclarke411
Aspirant
Mar 20, 2012
I just deleted the NIC from device manager and deleted the driver, the rebooted and let Windows 7 rediscover the NIC. Am now back up to 25MB/s Read - I can live with this!
Nasinator
Aspirant
Mar 21, 2012
One thing you can try, when you are getting low read speeds, is to stop it, and actually try writing a very small file to the NAS first. Then retry your read operation. Many times I have witnessed my read speeds increase by as much as 20-30% by doing this.

I can reliably re-produce this on firmware 4.1.7. I believe there is a fundamental flaw on initial session initiation for MTU negotiation during what I call "cold read operations." Meaning that your PC has no current TCP/IP sessions with the NAS device.

I've noticed however that actually writing a small file first (size is completely irrelevant). Then performing read operations greatly boosts the read speeds. My guess is that the write operation somehow correctly negotiates the MTU, thus making the performance better for reads.

One thing to note on this is that I use Jumbo frames with my device. So this scenario applies there. I cannot speak for the same situation on a normal MTU of 1500. I haven't tested it on normal MTU settings simply due to lack of time and resources.

I've been able to reproduce this phenomenon for a while now, but have not had the time to persue the actual cause at a packet level to provide proof that the problem actually exists. . . such is the life of physics majors lol. . .
robclarke411
Aspirant
Mar 22, 2012
Ok, duly noted - thanks for your input Nasinator!
kcallis
Aspirant
Apr 22, 2012
I just upgraded to the 4.1.9-T6 firmware, and suddenly I couldn't log into the admin screen. I ssh'd into the box, and was able to log in as root. I thought I could do a passwd admin and be able to reset the password, but no go. What do I need to do the change the password for the admin in order to log into the web interface?
StephenB
Guru - Experienced User
Apr 22, 2012
Normally you would do an OS reinstall from the front panel. Not sure how to do it from root.
kcallis
Aspirant
Apr 23, 2012
After I upgraded I logged in successfully. I removed the previous older version of samba (the add-on package). As soon as that was removed, I found myself back at a front view login. My original password didn't work nor did the default password. I was able to ssh into the box, and thought there a htaccess in place. But so far I have found nothing to change the frontview password from the command line.
Tam1
Aspirant
Apr 23, 2012
I have the same issue,

My uploads to the NV+ are excellent, easily maxes out my 100Mb 11.2MB/s and wireless network (300Mbps) around 13.9MB/s but downloading files from it is terrible...

100Mb ethernet or my Wireless around 4.4MB/s download ... yet changing to upload maxes my wireless out at 13.9Mbps (sure it'll go faster if i went gigabit, but just maxing out 100Mb on a download would be a start!)

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NV+ Slow Read in 4.1.7, 4.1.8 & 4.1.9-T6

21 Replies

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