D-Link Forums
The Graveyard - Products No Longer Supported => D-Link Storage => DNS-323 => Topic started by: maxjbo on January 12, 2009, 11:10:20 AM
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What kind of performance should I be expecting from this device, at the moment I get between 6MB/s and 12MB/s with a single drive, while copying large files (1GB+) to and from my PC. Is there anything I can do get better results?
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On what kind of network? Gigabit? 100M?
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Yes, I'm running on a Gigabit network, through a DIR-825.
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I have raid1 config and get 12M/s for both up and down on a Gbit len.
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Ok, is it me or is this relatively low? I was expecting a much higher transfer rate. What about RAID 0 or SSDs?
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I talked with a Product Rep (Not the flaky Customer Service reps) and they said max performance of their NAS' are 15MB/s. When asked why a 1gbps NAS which should have a theoretical transfer of 125MB/s only has so little, he responded with the CPU can only handle so much speed.
I would argue it has more to do with the controllers involved, but that's just my opinion. It's still pretty week to get more performance out of an USB external drive than an Gigabit NAS.
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I would argue it has more to do with the controllers involved, but that's just my opinion. It's still pretty week to get more performance out of an USB external drive than an Gigabit NAS.
I would argue it has more to do with RAM involved, and that's not just my opinion
The best place to put your money to optimize NAS performance is to beef up the RAM on a NAS and each networked client.
Full article at this link:http://www.smallnetbuilder.com/content/view/29936/79/1/4/ (http://www.smallnetbuilder.com/content/view/29936/79/1/4/)
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I reset the DNS-323 to factory defaults. Gigabit speeds went up to 24MB/s again!! ...
I realise there are a few threads on this topic already.
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Hi,
For Hi speed transfers like 20-24MB/s in windows (vista x64 in my case) you need to enable the jumbo frames in your dns-323, and in your Windows LAN card. Finally the switch, router or any other device needs to have jumbo frames support.
Before activating juMBo frames i have +- 12mb/s
Best regards and sorry for my English.
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Thanks, I'll go with the recommendations here to try and reach 25MB/s, but I guess in the end the article that Mig posted was eye-opening, my expectations were unrealistic. Although I like the extra features that the NAS provide I might end up using it as a backup solution only, when what I really wanted was a central file sharing hub.
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Trust me. This device rocks hard! I use it as a file / media / backup server with 4 computers on my LAN and find the machine a great asset.
Lucid
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Yes, like I said, I like the added functionality(web services), but as part of a local network I'm still undecided if I should not opt for a USB 2 RAID enclosure hooked to my Media Center PC.
Also, what size do you recommend for the Jumbo frames? I've read recommendations on this forum to set it at 4000, what if I max it out?
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Also, what size do you recommend for the Jumbo frames? I've read recommendations on this forum to set it at 4000, what if I max it out?
Test with different values and arrive at your own conclusion. Jumbo frame performance is highly variable in different setups. The popular values to try are 4k and 9k.
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Small LAN + Jumbo Frames = Nothing substantial
If your Router is DIR-655 then don't bother with anything higher than 4000k it switches after that. There are MANY topics with this already in discussion.
Lucid
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Actually my router is the DIR-825, I'm not even sure it supports Jumbo frames, since I never had to play with it to get decent speed.
Here's a few topics I came across when searching (for those interested)
Some benchmarks:
http://forums.dlink.com/index.php?topic=2985.msg16264#msg16264
NAS performance tester:
http://forum.dsmg600.info/p15002-2008-05-18-15:11:00.html#p15002
DNS-323 wiki:
http://wiki.dns323.info/
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Hi,
Iīm using Jumbo frames of 9.000, because my LAN is 1GB. The jumbo frames is really recomended with Hi speed conections (1gb).
Best regards.
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Check out this article...
http://www.smallnetbuilder.com/content/view/30201/54/
Conclusion
To wrap things up, here are the key points for using jumbo frames on small networks:
Jumbo frames require gigabit Ethernet.
The highest frame size for a connection is the lowest end-to-end maximum frame size.
Gigabit Ethernet Layer 2 switches forward or drop jumbo frames; they don't fragment.
Fragmentation is a Layer 3 (routing) function.
TCP can adjust frame size between different devices. UDP can't.
Using jumbo frames for low latency applications (gaming, VoIP) can be counterproductive
Bigger isn't necessarily better. Jumbo frame sizes need to be matched to device computing power.
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Thankīs for the info.
I read some articles, preferred Wiki in my opinion, and make several tests.
Copying a 4.5 Gb iso from DNS-323 to my pc (vista x64), without jumbo frames 10-12Mb/s and with jumbo frames 20-23Mb/s.
I donīt know in other configurations but in my network, jumbo frames makes the difference betwen good LAN HDD or to many slow LAN HDD.
Best regards and sorry for my English. :P
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Thankīs for the info.
I read some articles, preferred Wiki in my opinion, and make several tests.
Copying a 4.5 Gb iso from DNS-323 to my pc (vista x64), without jumbo frames 10-12Mb/s and with jumbo frames 20-23Mb/s.
I donīt know in other configurations but in my network, jumbo frames makes the difference betwen good LAN HDD or to many slow LAN HDD.
Best regards and sorry for my English. :P
Try it with 4.5 GB of smaller files - say 1000 or so MP3s - what do you think now?
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2.632 items (mp3) in 20,6Gb. Copying with exactly same results: 20-24Mb/s
Best regards.
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That's interesting - in my experience (pre 1.06 firmware) the performance took a serious nose dive when files sizes went down - I'm in the middle of some "intensive testing" with 1.06, I'll retest on this aspect and report back.
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My onboard adapter doesn't support jumbo frames so I wasn't able to achieve speeds greater than 12MB/s, I'll pick up a DGE-560T this weekend and report back.
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Perfect! thankīs for your replies.
Iīm thinking to make test with really smaller files, like a web site backup, with too many gifīs and html documents.
I will post my results tomorrow ;)
Best regards.
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Hi,
I make new test with 4.657 items with 39,6Mb. In this situation only 1Mb/s but total time for copy is around 1 minute.
The last test is make this same copy without JF 9.
Best regards.
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Than
I have a question here - I'm guess from your "numeric punctuation" you're not a native english speaker - I'm trying to get a clear picture of your numbers.
4.657 would be four thousand, six hundred ann fifty seven
39.6Mb would be thirty-nine "decimal" six Megabytes or 39600000bytes
Do I have it correct?
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Hi fordem,
Yes Iīm not native English, Iīm from Spain. sorry for my bad English.
The numbers are OK, I tested making a copy of my comunity http://www.comunidadwindowsmobile.es
best regards.
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There's no need to apologise, your english is way better than my spanish - it's just that you use a different punctuation for numbers making it difficult for me to do a comparison.