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Author Topic: DNS-323 slow transfer speed  (Read 81683 times)

gunrunnerjohn

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Re: DNS-323 slow transfer speed
« Reply #30 on: May 14, 2010, 01:15:19 PM »

it is coming at the same speed as the macbook -> airport extreme 802.11n (which should have gb) -> dns-323.
Wireless connections would be VERY lucky to get those data rates!  If this is a wireless connection, you've answered your own question!
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jamieburchell

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Re: DNS-323 slow transfer speed
« Reply #31 on: May 14, 2010, 04:41:48 PM »

airport extreme 802.11n (which should have gb)

Wireless N has a maximum theoretical speed of 300Mbps in the 5Ghz band and 150Mbps in the 2.5Ghz band. Gigabit is 1,000Mbps.
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gunrunnerjohn

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Re: DNS-323 slow transfer speed
« Reply #32 on: May 14, 2010, 05:36:17 PM »

The magic word here is theoretical, no way you see that kind of throughput for SMB transfers.
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PS: RAID of any level is NOT a second copy.

jamieburchell

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Re: DNS-323 slow transfer speed
« Reply #33 on: May 14, 2010, 05:43:51 PM »

Indeed. No idea why the poster says it should be gb- which I'm assuming gigabit.

I actually find transferring large files over wireless isn't that bad. It's lots of smaller ones that stuff it up. If I rip a CD and transfer it to the NAS, say 90Mb- it usually does it in under 10 seconds. I'd rather the conveniance of wireless than shaving a few seconds off.
« Last Edit: May 14, 2010, 05:49:08 PM by jamieburchell »
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fordem

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Re: DNS-323 slow transfer speed
« Reply #34 on: May 14, 2010, 06:15:52 PM »

Wireless N has a maximum theoretical speed of 300Mbps in the 5Ghz band and 150Mbps in the 2.5Ghz band. Gigabit is 1,000Mbps.

Wireless-n has the same theoretical maximum speed - 270/300mbps (depending on the guard interval) in both the 2.4 & 5GHz bands
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dcmwai

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Re: DNS-323 slow transfer speed
« Reply #35 on: May 15, 2010, 03:33:40 AM »

i should have gigabit though.

I do have a WD15EARS in there though. but jumbo frames are enabled. would that be the issue? or is it somewhere in the connection.

i apologize, but i am a complete novice that was looking for a great nas to serve as a media server for xbox360 and itunes.

any help is appreciated.

EARS is the issue ...
Not the 323
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jamieburchell

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Re: DNS-323 slow transfer speed
« Reply #36 on: May 15, 2010, 07:06:52 AM »

Wireless-n has the same theoretical maximum speed - 270/300mbps (depending on the guard interval) in both the 2.4 & 5GHz bands

I stand corrected. I had a Wireless N mini PCI card in my laptop with 3 antennas and support for 2.4GHz/5GHz. It connected to my router at 300Mbps.
I now have a different laptop with Wireless N PCI card with 2 antennas. It only connects at 150Mbps. Is this because of the number of antennas rather than which frequencies the card can support? Or do all wireless cards support both frequences?

I had read that "To achieve maximum output a pure 802.11n 5GHz network is recommended". So although it is theoretically possible, is it more likely that you are only going to get 300mbps speeds using 5GHz due to congestion in the 2.4Ghz band?
« Last Edit: May 15, 2010, 07:10:24 AM by jamieburchell »
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Elpinnen

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Re: DNS-323 slow transfer speed
« Reply #37 on: May 16, 2010, 04:39:45 AM »

How's the ftp transfer speed look like between the same hosts? If it's a lot faster than network shares then you probably want to tweak the samba configuration setting a little bit.

I have now tested with FTP, no difference...

226 1990.586 seconds (measured here), 2.24 Mbytes per second
ftp: 4679061504 byte skickade på 1990,34Sekunder 2350,89kB/sekund
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fordem

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Re: DNS-323 slow transfer speed
« Reply #38 on: May 16, 2010, 05:38:16 AM »

I stand corrected. I had a Wireless N mini PCI card in my laptop with 3 antennas and support for 2.4GHz/5GHz. It connected to my router at 300Mbps.
I now have a different laptop with Wireless N PCI card with 2 antennas. It only connects at 150Mbps. Is this because of the number of antennas rather than which frequencies the card can support? Or do all wireless cards support both frequences?

I had read that "To achieve maximum output a pure 802.11n 5GHz network is recommended". So although it is theoretically possible, is it more likely that you are only going to get 300mbps speeds using 5GHz due to congestion in the 2.4Ghz band?

This is really a discussion for a different thread & forum, but, briefly, the manufacturer decides which frequency band(s) he wishes to offer, most offer 2.4, some offer both, and I know of only one with a 5GHz only offering.

Part of the magic of wireless-n is in mimo - multiple in, multiple out, spatially separated streams, and yes, the number of streams does impact the throughput, part is in double bandwidth channels, (40MHz wide rather than 20MHz), which will be automatically disabled in the presence of other networks, using a "good neighbor" philosophy, and part in better encoding.

I suspect your 150MHz only 2.4 card may be an Intel, where Intel has chosen to disable  double width channels on 2.4GHz
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jamieburchell

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Re: DNS-323 slow transfer speed
« Reply #39 on: May 16, 2010, 05:50:10 AM »

Thanks for the info Fordem. It's actually an Archos card, the Intel was the quicker card. Apologies for the diversion OP.
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Elpinnen

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Re: DNS-323 slow transfer speed
« Reply #40 on: May 16, 2010, 07:28:30 AM »

I have now removed drive 1 (right) and with raid1 degraded writing speed is like this for ftp:

226 325.153 seconds (measured here), 13.72 Mbytes per second
ftp: 4679061504 byte skickade på 325,03Sekunder 14395,96kB/sekund

After some google there seems to be a problem with WD15EADS-00P8B0 (my second drive is WD15EADS-00R6B0)

Edit: I'm waiting for RMA, I let you all know when my disk is replaced any change i write speed.
« Last Edit: May 17, 2010, 12:10:08 PM by Elpinnen »
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redwings

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Re: DNS-323 slow transfer speed
« Reply #41 on: May 20, 2010, 08:08:10 AM »

I am currently getting between 16.5 - 17.5 Mbps writing from my PC to my DNS-323 with a DGS-2208 switch between them.
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Elpinnen

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Re: DNS-323 slow transfer speed
« Reply #42 on: May 30, 2010, 01:46:12 AM »

Now I have replaced 1 of my 2 discs and speed is back! :)
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brunetel21

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Re: DNS-323 slow transfer speed
« Reply #43 on: November 25, 2010, 11:45:22 AM »

I got the Dlink DNS 323 today and you guys are very happy people, i get transfer rates lower than 1MB/sec.
A 8GB video takes over 5h to copy over :(.

My setup is :

Router: Sitecom 300N Gigabit
NAS: Dlink DNS-323
HDD in the NAS: 2 x Seagate Int 2TB 3.5" SATA 5900rpm 32MB - Barrac ST32000542AS - Barracuda LP in RAID 1

Imac 27 i5 quad core
Dell latitude (one of the latest series, duno exactly now)


Everything is wired to the router, so no wireless. Only the iMac 27 is wired trough a pair of 200MBps homeplugs.

I selected 100MB in the NAS configuration and activated Jumbo Frames 9000, and no difference.

I have no itunes or bittorent servers running.

The FTP from outside to the nas works way better than within the internal network.

I am stuck now, and have no ideea what to change more, i read trough the whole forum and tried everything.

Help will be greatly appreciated
« Last Edit: November 25, 2010, 12:30:07 PM by brunetel21 »
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jamieburchell

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Re: DNS-323 slow transfer speed
« Reply #44 on: November 25, 2010, 12:37:20 PM »

Something's not right there. Have you tried directly connecting the NAS via network cable to your computer, just to test how fast the connection is when copying files? If it's still slow, you can forget about troubleshooting anything other your DNS-323, your network cable and your computer. If it's fast, something else is wrong most likely.
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