Ciao.I have a Readynas Ultra 2 with 2x WD RED 3 TB.I used to have the HDs in a Raid 0 configuration... but few days ago without warning I have lost everything.My previous configuration was the Ultra attached to a Wifi AC router and the PC connected via wifi AC with the router.The comunication speed between PC and NAS (via wifi) was about 50 MB/s.Now I have reistalled the OS, did a factory reset and even tested the HDs on a PC to make sure they were fine.I have now a Raid 1 configuration but I am soffering an issue with speed.It seems that the LAN connections of the NAS have a problem. I am getting poor performance via 1 Gbps LAN.On Direct to PC connection via LAN, I get 15 MB/s that immediately drop to zero.I have tryed both with Jumpo on and off (both on PC and NAS) and the situation doesn't change.The Cable is CAT 7.Ethernet are: Intel(R) 82579V Gigabit Network Connection and Realtek PCIe GBE Family Controller,Please help!

After changing parameters (jumbo off) now I have 80 MB/S for few seconds then drop to zero.The Static IP config is:NASIP 192.168.168.1Subnet mask: 255.255.255.0Gateway nonePCIP 192.168.168.60Subnet mask: 255.255.255.0Gateway 192.168.168.1Wifi is on:IP 192.168.1.50Subnet mask: 255.255.255.0Gateway 192.168.168.1.1Is that correct?

Not exactly.If your wifi router is 192.168.1.50, then your other LAN devices would normally have IP addresses in the format 192.168.1.x. Your gateway is not the wifi router, or is it?Perhaps if the gateway is really 192.168.168.1, then setup your whole LAN like that, with IP address as 192.168.168.x.Having said that, you have setup a direct PC to nas connection so this would appear to rule out the IP addresses or wifi being the problem. How did you test the drives?What firmware is on the nas?

Thanks for the reply!I did the test with just a drag and drop file from one folder to the other as I am used to do.The MB/S figures are the one that Windows display while copying.I use Win 8.1 by the way.The firmware is the latest 4.2.27.Sorry for that unnecesary confusing line about wifi is on...I have intetionally used other numbers than the one that my normal network has to avoid conflictions.In normal configuration, my Wifi router has 192.168.1.1 with DHCT disabled and all other components have static IP.The PC is 192.168.1.50 while the NAS, when normaly connected to the router via Giga LAN, is 192.168.1.100.Here I have connected the NAS directly to the PC but I have also isolated the PC from the Wifi disabling the wifi card.So I gave them 192.168.168.1 to the NAS and 192.168.168.60 to the PC.I am not sure what number should I put as Gateway on the PC (since is mandatory) since no other hardware then the NAS is connected.I hope I was more cleare this time.Thanks again for your help... do yo know what else should I try to do to fix the problem?

You can use 192.168.168.1 for the gateway on the PC as well.

Thanks StephenB!So this is what I did today:I have used two different LAN Cat 7 cables to make sure those were not the problem.I have disable all other comunication cards on the PC (wifi/Bluetooth/ unused LAN).Jumbo disable.MTU onthe NAS set on 1500 then to 1472 with no changes in performances.First attempt.I have connectet NAS LAN Port 1 with Realtek PCIe GBE Family Controller of the PC.Configuration:NASIP 192.168.168.1Subnet mask: 255.255.255.0Gateway 192.168.168.2 (the PC address)PCIP 192.168.168.2Subnet mask: 255.255.255.0Gateway 192.168.168.1 (The NAS address)Result:Moving a 4 GB file with drag and drop: 90 MB/s for 3s", then drop to 0 MB/s, then raise to 20 MB/s for 2"s, then drop to zero...then stuck at 512 kb/s..Second attempt:I have connectet NAS LAN Port 2 with Intel(R) 82579V Gigabit Network Controller of the PC.Configuration:NASIP 192.168.168.100Subnet mask: 255.255.255.0Gateway 192.168.168.50 (the PC address)PCIP 192.168.168.50Subnet mask: 255.255.255.0Gateway 192.168.168.100 (The NAS address)Result:As before. Start at 83 MB/s, drop to 0 then raise and drop, with the highest peek at 2.78 Mb/s, lowest 0. Ii seems to be stuck most all the rimeLast attempt:I have connectet a Surface Pro with a Giga LAN adapter to the NAS Port 2.I gave the Surface the same configuration that the PC had. Result:Start at 83 MB/s then drop to 0...So I am sure the problem is not the PC or the cable.Please tell me if there is any other config attempt I should try.I have already done 2 factory reset and I have overwrite the firmware once.One sidebar question: as I have formatted and reinstalled everything in a Raid 1 configuration, now it showing me that 1% of the free space ( 47 GB) is already taken (not by me). Is that normal?Thank you in advance!

ReadyNAS Ultra 2 LAN slow | NETGEAR Communities

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StephenB
Guru - Experienced User
Mar 23, 2015
The resync should complete with 12 hours, but the estimated times are often very far off. But it should be done by now.

Not sure of the precise format of "Raw Read Error Rate" but I'd like it better if it were 0. I have a couple of drives with non-zero values, but none as high as 43. Is this the value that concerns you?
alphapapa
Aspirant
Mar 23, 2015
I have 6 TB overall but they are empty.
The Resynch started more the 24 hours ago..
Should remove the volumes and try to put only one HD in a FlexRaid config, just to see if transfer speed get back to normal?

I am concern also about the Seek Error Rate 70.
His twin brother doesn't show those numbers:
Attributo SMART
Raw Read Error Rate 0
Spin Up Time 5908
Start Stop Count 10320
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 18455
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 166
Power-Off Retract Count 118
Load Cycle Count 10201
Temperature Celsius 32
Reallocated Event Count 0
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 0
ATA Error Count 0
StephenB
Guru - Experienced User
Mar 23, 2015
Keep in mind that RAID resync takes the same time - the fullness/emptiness of the file system doesn't matter. All sectors are mirrored, whether used or not.

I think its worth deleting the volume, and inserting the error-free disk by itself. You can recreate the volume as xraid (as long as you don't install the concerning disk).
alphapapa
Aspirant
Mar 23, 2015
Ok!
I will give it a spin.
If it will be still really slow then I must look somewhere elso for the problem, not the disks.

As T2 once said... I will be back.

Thanks!
alphapapa
Aspirant
Mar 23, 2015
Done!

With only one 'good' HD and Jumbo off I have an avarege of 35 MB/s (Windows drag and drop), still below the 50 MB/s I was used with a Raid 0 (via Wifi AC).
So I may have gain in transfer stability but performance seems still low to me.
Thoughts?
StephenB
Guru - Experienced User
Mar 23, 2015
I agree it seems slow.

It might be worth doing a clean install on the second hard drive (powering down, and removing the first drive) and see if that is stable, and how the performance compares.
alphapapa
Aspirant
Mar 23, 2015
Yes thanks... but first... I am giving another "Data Lifeguard Diagnostic for Windows (by WD)" threatment to the second drive.
Then I will swap them and see how it will perform.

Just for fun I have anabled Jumbo both on the NAS and on the controller (called Jumbo 9K) but performances dropped to 10 MB/s.....
StephenB
Guru - Experienced User
Mar 23, 2015
Perhaps the router is fragmenting the jumbo packets.
alphapapa
Aspirant
Mar 23, 2015
No router... direct connect between PC and NAS.
And as I wrote, PC has two LAN and I have also used 2 different CAT 7 Lan cable.
StephenB
Guru - Experienced User
Mar 23, 2015
Ok. Sometimes you can improve the JF performance by turning off hardware acceleration features in the PC NIC.

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ReadyNAS Ultra 2 LAN slow

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