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[topikito]

Hi!

I'm having a very slow acces to the NAS. I mean, when I access through a filemanager (Finder) to the NAS, it's OK, but if i open a folder that has music and play it (VLC), there's an incredible lag. The music stops every 2 seconds for about 1 sec. And so on. This happens also when I open video, but just more significant. This didn't happen before. Does anybody know why this could be? It just appeared from night to day. :S:S i dind't do anything!

Thanks!

[topikito]

no one knows why??

It also happens if I access through windows

[sergey]

It seems that what you see could be similar to what I noticed in the following. You may want to do some tests after a "on-OFF" or a soft RESTART or your NAS, and see if it makes a difference.


Because of Vista access and issues, I upgraded from firmware 1.03 to 1.06 about 10 days ago.

Since that I have a performance problem. It only  shows after specific actions/situations. It has a bypass which is a "pain in the neck".

During regular actions it seems Ok (although I had noticed that restarting/Power off-on sometimes helped in firmware 1.03).

Now with 1.06, when I run a daily differential backup of the DNS-323 files (about 800K files close to 300GB on a 500GB raid mirror), it suddenly  starts to crawl at very low speed (approximately 1/30 to 1/10 of speed after a clean/fresh restart). The slow crawling starts after about scanning ~100K files, or about 120-180 GB.

The good scanning speed is about 100 files/sec. When it slows down, it is between 0 to 10 files/sec.
- When that happens, one can hear a lot of disk access, though not much happens on the network link (like 0.01% of a 1GHz connection)


The bypass is then:
- pause the backup (to avoid backup error for inaccessible device).
- Logon on the NAS browser , and use TOOLS>SYSTEM>RESTART
- Wait for the system to come back (~less than 1 mn, as documented)
- Select Continue on the BACKUP software.
- The access immediately and systematically restarts a  ~ 100 files/sec.
- Keep doing that until "automated night backup" completes. (2 to 4 times depending on circumstances)


Note:
- A few days ago, I also disabled the unused ITunes server. It seems to have helped the issue somewhat, but not enough.
- I have another scanning daily process (X1 Indexer, which does ot seem to have the issue, or has it in a milder way).
- 1.03 did not have theses issues in such a drastic way, or did not have them, tough I had noticed that an occasional restart often improved things.
-  did not update to 1.07, since it did not seem necessary for my issues (except if it has hidden/undocumented improvements).


products;
- Win XP Pro Service Pack 3
- EMC Retrospect for backup
- X1 from www.X1.com to index data.
- 1 GHz network connection to NAS, PC & switch.

I have noticed that a number of people have performance issues. What I described here is a systematic problem with a simple bypass. I am convinced that it has an explanation, and hopefully a solution.

[topikito]

You are right when you say that it don't stop reading de HD when i just want a little file, of only a pair of MB. It's even reading (or writing?) the HD's when i'm doing nothing! I just disabled the UPnP, but still the same. My case isn't the problem during backups. I've for example, downloaded something with the BT, and i want to view it from the NAS in my laptop... i just can't! The lag is INCREIBLE! also music, or text files! Yesterday i opened a *.doc for editing it, and there were just so much lag, that the program froze down a couple of times while saving the file. :S The most icreible thing is that this began happening from night to day! Without doing anything!

EDIT: Just restarted the switch (Let's see how it goes tomorrow)

[topikito]

Please, check this screenshot

http://www.topikito.com/img/im3.png

How can 75 MB take 8 minutes to transfer? And no, it's not an eventual lapse of time, it really takes 8 minutes!

[topikito]

If I connect it directly to the NAS, it connects at 1000 Mbs and it's incredibly fast! I limit it to 100 mbs, and it's also faster than through the router. :S:S Through the router the speed is about about 1,2 MBs :S Router fail? Cable fail?

[ECF]

Looks like it. Have you tried checking for updates for your router or changing out the cables yet?

[sergey]

Hi ECF,

Topikito's Pb seems possibly different from mine.

I even upgraded to 1.07, and have the same issue (though possibly slightly milder). It seems that after reading (or reading data about) about 180K files, or about 180GB of data, It crawls to a slow speed, but seems very busy inside the box. After a web based NAS restart, it goes very fast again, until the next hump. it visibly does that when read by EMC retrospect backup software with the goal of refreshing the NAS backup.

It used to work fine with V1.03 (But then Vista stations had difficulties accessing it).

A search/indexing software like X!, which updates itself daily does NOT have that issue (or mild enough that it is bearable).

Even under V1.03, I had the feeling that a Restart always sped up things in the immediate future.

I have posted the problem, but have not heard or seen any feedback from the D-link tech guys.

Thanks.

[topikito]

Well, i've tried with both ethernet cables, and with both, its fine when connected directly. I'll buy a 10/100/1000 switch (I allready needed it for getting the 1000 Mbs speed to the network). I'll post when done

[topikito]

This might sound stupid, but, is there special cables for Gigabit connections? The 1000 Mbs speed is unavailable in the WebGUI with some cables

[lizzi555]

You need Cat 5e or better Cat 6 cables.
Normal Cat 5 is up to 100 M connections only.

[topikito]

Thank you!

[Tank_Killer]

here is a great little article about gb networking and performance.

http://www.tomshardware.com/reviews/gigabit-ethernet-bandwidth,2321.html

[sergey]

Thanks Tank-Killer for some clarifications.

However, for true problems in the DNS-323, how do we get D-link to simply acknowledge & fix the problem. It is too easy to replace true tech support by a forum which works well except for true Product problems.

The problem was reported (I am sure that other people must have experienced the bug too, one way or the other). but as of now:
- No question or human feed-back from D-link
- No reply.
- A black Hole ?

The unfortunate conclusion could be that there is NO tech support, only minimal upgrades aimed at highly visible issues impacting future sales (like TB drives,and Vista issues).

I have to believe that the problem I experience is a true DNS-232 problem:
- No problem with firmware 1.03 (but Vista issues).
- A problem with 1.07. the easy bypass is a software RESET on the NAS (~3 times for a successful full
backup, like at 2:00 am ?).
  -  After the RESET, it acts fast.
  -  After about 150K files/150 Gb of read activity, it is just busy noisily accessing the disk, but at an extremely slow practical throughput.
  - Immediately after the RESET,  it acts fast again (about 100 files/sec), until the next RESET.
  - With 1.03, the differential backup update was done in 1 or 2H max, without any human intervention.

[Fatman]

I am getting tired of typing this out so I am going to quote myself from yesterday, please understand that the tone of the below is not what I intend for this thread, I am just being too lazy to type it again.

Again I repeat, you have been very reasonable from what I have read sergey (admittidly only the last post) and I am not trying to be anything other than helpful to you.

This forum is a community for users to help each other, the mods here are not a Tech Support team for your fora pleasure.  If you want to complain call customer service, if you want to have a problem troubleshot call technical support.

D-Link is under no onus to respond to anything on these boards, the mods post as themselves, they ban as D-Link agents.  We are given the freedom to speak as ourselves, and we participate where it amuses us to do so, or where we think we can help.  Every D-Linker could quit posting right now and we would not be violating anyone's expectations.  If you need to communicate with D-Link, use one of the above numbers.  If you want to communicate with experienced users of the same products you use (regardless of their status as D-Link employees or not) then I suggest you act in a civil manner and enjoy the forums we are all building together.

While it was stated a little defensively (that thread wasn't going well), the fact remains the same.  If you are here because you think it is a contact with D-Link concerning what you belive to be a product issue (I don't know the facts in this case, I don't use this product) then you are in the wrong place.

D-Link employees tend to choose to respond where they belive there is fertile ground to help someone (or where they feel challanged, whch is too often the case for me, and addmittedly what is making me post here).  If there is a product issue, often they know of it long before someone posts it in the forums (again I don't know the specifics here) and can't tell you anything (either because they don't have anwsers, or because we all sign a pretty little NDA, or any one of a dozen reasons) that would make you feel any better.