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[D-Link Multimedia]

What hard drives are you using in your NAS?

[bozydar]

I wrote about my drives. Now I have two Samsung 1TB, but I had the same problem with WD AVJS 500GB drives.

As I promised, I plugged DNS-320 to my notebook and after a little fight (1Gb connection) I was able to copy 120GB file from notebook to DNS.

I'll try to repeat this test 2-3 times, because it could work accidentally.
But if it works, I will try to determine if I have problems with my router (D-Link) or with my desktop computer.

[Raymond175]

I do have the same problems stated here... Is there a solution yet?!

My setup:
- Firmware 2.00
- Windows 7 Ultimate x64
- 100 MBit LAN
- 2 simultaneous network shares
- 2x 1,5 TB Samsung mirrored harddrives

Edit: Might it be because of this?
https://www.illumos.org/issues/1676

Edit 2: I believe the problem may also be in oplocks:
http://webcache.googleusercontent.com/search?q=cache:Ce2HayAwFmEJ:www.superbase.com/services_tech_support_oplocks.htm+oplocks&cd=1&hl=nl&ct=clnk&gl=nl

[Raymond175]

Ok, I now have tried to copy 7,51 GB from my nas to my harddrive for about 8 times, all without success. I disabled oplocks to see if that was the problem, but it was not.

What I do see is that the service gets disconnected at the same time everytime. For me that is after copying about 5,42 GB and with (according to Windows) 3 minutes and 30 seconds, and 2,09 GB left.

So it is not random, and I can reproduce this 100%...

[jarnfiel]

I am having the same problem with my DNS-320, generating essentially the same message as displayed in the OP's screen capture.  My configuration:

-- DNS-320
-- Connected to WRT610N router on a Gig-E port
-- 2x 2TB WD Caviar Green drives, mirrored (Raid 1)
-- Router assigns a fixed IP address to this device
-- Recently updated to firmware 2.02, with no improvement
-- I've also tried leaving the FAN set to high rather than auto, on the chance that the fan spinning up was causing the unit to pause; no effect.

-- Client running Windows 7 64 bit
-- Issue occurs regardless of whether the client is connected to router via WIFI or 100 Mbit ethernet
-- Issue occurs with no clients or load load on network

I see the behavior when uploading large files using Windows Explorer, and also, my EaseUS ToDo Backups fail.  Since this device is to serve as my central media library and shared backup, I'm understandably concerned.

[baltzatu]

When I changed my 750GB HDD with a 2TB one, I've copied over 400GB via network without any hiccup (from NAS to computer via a D-Link DIR-600 router, from computer back to NAS via a TEG-S50g TRENDnet Gigabit switch - I bought the switch after the first step, since I didn't want to grow old before the copy operation finishes). First I copied all the files from NAS (WD7500AADS installed) to my computer, replaced the HDD with ST2000DL003, installed the Gigabit switch and copied the files back to NAS. Decent transfer rates (an average of 8GB/s when using my DIR-600 and 16GB/s when using TEG-S50g - lots of small files).

Config: 1x750GB WD7500AADS / 1x2TB ST2000DL003 HDD (single disk, right slot)
Firmware version: 2.02
Static IP address (on both computer and NAS)
[Edit]
Link Speed: Auto
LLTD: Enabled
[/Edit]
NAS was accessed via IP (\\NAS_IP\Volume_1)
No Oplocks/Map Archive/Recycle/FTP/NFS/WebDAV on Volume_1 share (only CIFS and AFS)
Only FTP Server and NFS Service enabled on NAS
Same user/password on PC and NAS
Windows 7 x64 SP1

In my opinion, don't trust any DHCP server if you want reliability. Try transferring your files using static IP addresses on both source and destination and see how it goes.

[Hanzo]

1 Think 

Some of users that use this NAS works with MAC OS X?

[jarnfiel]

Balzatu, thanks for detailing your settings.

I did see reference somewhere to possible issues with the WD WD20EARS drives in this environment; hopefully those are not the source of the problem.

I had already defined a static IP for the NAS and my laptop.  

I just disabled Oplocks and recycle and have only CIFS and AFS enabled on all shares and will retest.  

Apart from the periodic disconnect during upload to the DNS-320, my observed performance via Win7-64's file copy dialog is around 8-12 MB/s.  Crystal DiskMark 100 MB testing yields:
Sequential Read :     7.712 MB/s
Sequential Write :    13.466 MB/s
Random Read 512KB :     6.647 MB/s
Random Write 512KB :    12.959 MB/s
Random Read 4KB (QD=1) :     1.103 MB/s
Random Write 4KB (QD=1) :     2.380 MB/s

(XPS M1330 => WiFi 5GHz @ 300 Mbps => Linksys WRT-610N => cabled Gig-E => DNS-320 set to 1000 Mbps)

[jarnfiel]

Just successfully completed a backup of about 280 gb using EASEUS ToDo Backup 4.0.  The changes I made from my previous attempts were:

NAS was accessed via IP (\\NAS_IP\Volume_1)
No Oplocks/Map Archive/Recycle/FTP/NFS/WebDAV on Volume_1 share (only CIFS and AFS)
Only one reference to a NAS share under "network places".

Here's hoping this is repeatable!