GDay All,I have just installed a RND4000 V3 NV+ onto my network and I'm a little disappointed with the transfer speeds. At best I get an average of 7.2mb/s up and down which is dismal compared to the 90mb/s transfer rates I get between the main computer and the computer downstairs. I get similar performance between my PVR computer also. All have gigabit NICs. The two machines upstairs connect directly to the router while the machine downstairs connects via a switch. The ReadyNAS is upstairs and connects directly to the router.I have tried turning on Jumbo packets, but that made no difference at all. I don't know what else to try or what to look for in the settings to correct the performance issue. I would expect to get 20 or 30mb/s transfers with my current setup.Anyone have any suggestions or tips to get better transfer rates?My specs:Main computer: Realtek Gigabit NIC (Built-In Asus Sabertooth X58)Netgear CG3000 Gigabit Cable Modem/Router (Optus).3x Seagate ST2000DL003-9VT166 [1862 GB]1x Hitachi HDS722020ALA330 [1862 GB]

Try doing a direct connect between the NV+ and one of your PCs, and see what speed you get. (http://www.readynas.com/kb/faq/boot/how ... _pc_or_mac)BTW, by 90 mb/s do you mean 90 megabytes per second or 90 megabits per second. Normally 90 megabytes per second is upper-case (90 MB/s).

I did mean MB/s (megabytes per second) damn keyboard .... lolI'll try the direct connection idea and get back to you with the results.

Using Direct Connection I get an average of 13 MB/s better but not great.

Ok. I would look for ethernet errors on the NV+ network stats, and also confirm that the disk health is good.Then do some tuning with direct connection. Often turning off the "offload" options on the PC NIC speeds things up.

Disk Health is good. I tried turning off the Offload options for my NIC but they made things slow down if anything. Network Errors according to the ReadyNAS show the following:Auto Negotiation = 6Bad Packets = 0Disconnect = 0False carrier = 5Idle errors = 1275Link failures = 0Recieve errors = 30695Symbol errors = 0VLAN tags = 0TCP Retransmits = 177Unrecovered TCP Retransmits = 36Does that give any clues?

NV+ Transfer rates | NETGEAR Communities

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StephenB
Guru - Experienced User
Jun 26, 2012
Try doing a direct connect between the NV+ and one of your PCs, and see what speed you get. (http://www.readynas.com/kb/faq/boot/how ... _pc_or_mac)

BTW, by 90 mb/s do you mean 90 megabytes per second or 90 megabits per second. Normally 90 megabytes per second is upper-case (90 MB/s).
trumpy81
Aspirant
Jun 26, 2012
I did mean MB/s (megabytes per second) damn keyboard .... lol

I'll try the direct connection idea and get back to you with the results.
trumpy81
Aspirant
Jun 26, 2012
Using Direct Connection I get an average of 13 MB/s better but not great.
StephenB
Guru - Experienced User
Jun 26, 2012
Ok. I would look for ethernet errors on the NV+ network stats, and also confirm that the disk health is good.

Then do some tuning with direct connection. Often turning off the "offload" options on the PC NIC speeds things up.
trumpy81
Aspirant
Jun 26, 2012
Disk Health is good. I tried turning off the Offload options for my NIC but they made things slow down if anything. Network Errors according to the ReadyNAS show the following:

Auto Negotiation = 6
Bad Packets = 0
Disconnect = 0
False carrier = 5
Idle errors = 1275
Link failures = 0
Recieve errors = 30695
Symbol errors = 0
VLAN tags = 0
TCP Retransmits = 177
Unrecovered TCP Retransmits = 36

Does that give any clues?
StephenB
Guru - Experienced User
Jun 26, 2012
Are you using cat 5e or cat 6 cable? Also, if you look at the numbers before/after a transfer are you seeing increases in the errors?
trumpy81
Aspirant
Jun 26, 2012
I'm using Cat 5e cables. Not sure what the ReadyNAS was supplied with though, I assume it's Cat5e also.

Before doing a 1GB transfer the error numbers were as before except for TCP Retransmits = 181. No change after the transfer.
StephenB
Guru - Experienced User
Jun 26, 2012
ok, so there is no increase in the error stats during the 1 GB xfer.

Not sure if the NV+ was shipped with a 5e cable or not, though the grade is almost always printed on the cable, so you can check.

Do you have flow control enabled on the realtek? Also, did you test both read and write speeds?
trumpy81
Aspirant
Jun 26, 2012
Tried a 2.5GB write to the NAS. Average speed was 14.0MB/s. Flow Control is enabled on the Realtek NIC.
StephenB
Guru - Experienced User
Jun 27, 2012
ok. What firmware are you running? Any add-ons?

Also, is there any sign that the NAS is resyncing? Or any errors in the SMART+ logs under disk health?