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[garyhgaryh]

I just got a new gigabit switch - a dlink dgs-2208.  I have my dns-321 set to auto for network speed, but my switch says it's set to 100mbits.  Any ideas? i know I can just set it to 1000 to see, but I figure i'll ask first.

gary

[fordem]

Check the cable - gigabit requires all four pairs, 100 mbit only requires two.

Be very careful about setting the DNS-323 to gigabit - because if you do and you cannot get a gigabit connection, your only way out will be to reset to factory defaults.

[garyhgaryh]

Thanks for the warning.

I'm new to gigabit networking.  if I set it on auto and a computer I'm using has a gigabit interface, the NAS will transmit at 1000mbit/sec (the gigabit rate).  If another computer is trying to connect at 100mbit/sec, it will transmit to that at 100? Or will it look for the lowest common denominator and rx/tx at 100 instead of the faster 1000 (gigabit) rate?

Gary

[Tank_Killer]

Your Router/NIC will automatically negotiate the connection rate for each client (Remember that gigabit uses both pairs on your cat5e/cat6 cable so make sure your cabling is correct if they dont negoiate the speed you expect).  Keep in mind that if you have a GB switch has has flowcontrol enabled you will take a performace hit when traversing 100 to 1000 with simultaneous access between clients on the switch.  Turn it off if you can.

[fordem]

Remember that gigabit uses both pairs on your cat5e/cat6 cable so make sure your cabling is correct if they dont negoiate the speed you expect.

I think there's a typo there - 10/100 uses two pairs, gigabit requires all four.

[garyhgaryh]

Are you guys seeing this on the dns-323?

http://forums.dlink.com/index.php?topic=3689.msg21575#msg21575

[mig]

Are you guys seeing this on the dns-323?

Neither the DNS-323 or the DNS-321 operate at full theoretical gigabit network speeds.

www.smallnetbuilder.com has a NAS performance charts that rate the D-Link DNS series NAS at various
network settings (100/1000), jumbo frame settings 4K (on/off), RAID configuration (JBOD/RAID0/RAID1),
and read and write performance.  You should judge your performance against the www.smallnetbuilder.com  results ~15MBytes/sec, not the theoretical gigabit network speeds (1000bits/sec).

If you want a faster NAS you need find one with more RAM.  The DNS (321 and 323) series have 64MB of RAM this contributes heavily towards limiting your network transfer performance.  If you want a very fast dual drive NAS look at the Synology DS209+ it has 512MB RAM with ~40Mbytes/sec transfer rate, and costs over 2.5 times the price of the DNS-323.

[Tank_Killer]

Thanks for pointing that out for me fordem.  For the price the DNS series has a VERY acceptable trasnfer rate.  Mig is right, the price difference is quite considerable.  To the point where I would just build an older PC withe freeNAS software before buying a netgear or something.

[garyhgaryh]

Neither the DNS-323 or the DNS-321 operate at full theoretical gigabit network speeds.

www.smallnetbuilder.com has a NAS performance charts that rate the D-Link DNS series NAS at various
network settings (100/1000), jumbo frame settings 4K (on/off), RAID configuration (JBOD/RAID0/RAID1),
and read and write performance.  You should judge your performance against the www.smallnetbuilder.com  results ~15MBytes/sec, not the theoretical gigabit network speeds (1000bits/sec).

If you want a faster NAS you need find one with more RAM.  The DNS (321 and 323) series have 64MB of RAM this contributes heavily towards limiting your network transfer performance.  If you want a very fast dual drive NAS look at the Synology DS209+ it has 512MB RAM with ~40Mbytes/sec transfer rate, and costs over 2.5 times the price of the DNS-323.

Thanks for your reply.  Yes, I'm seeing around 12MB/sec so I guess I'm in the ballpark.  I was hoping to see somewhere in the 20MB/s range.  I don't expect 10x.  I guess I'm doing a tad better than my 100mbps setup, but ever so slightly better. 

Yes, I agree with Tank_killer, I'll just run FREENAS on an old pc with a gigabit nic.

These NAS are cheap so I don't expect it all, but it's advertised as a gigabit NAS, although it doesn't perform that way.

[bigclaw]

With large files (ISO images, 1GB videos), I get almost 18MB/s transfers between the DNS-323 and a Core 2 Due Vista SP1 machine, without jumbo frames. That's 64% faster than my 100M figures (~11MB/s) before a gigabit switch upgrade. If you are getting only 12MB/s with similar parameters, something is not right.

If your file sizes are smaller, that's another story though.

[garyhgaryh]

With large files (ISO images, 1GB videos), I get almost 18MB/s transfers between the DNS-323 and a Core 2 Due Vista SP1 machine, without jumbo frames. That's 64% faster than my 100M figures (~11MB/s) before a gigabit switch upgrade. If you are getting only 12MB/s with similar parameters, something is not right.

If your file sizes are smaller, that's another story though.

I'm running a similar setup.  core 2 duo Vista SP1 machine on a gigabit switch dgs-2208.  I will try a better gigabit nic.
What switch / router are you using?

I am getting around 22-26 MB/s copy from one machine to another (vista desktop to my xp laptop with a gigabit lan on the docking station).  The bottleneck is at the NAS.

Gary

[bigclaw]

I'm running a similar setup.  core 2 duo Vista SP1 machine on a gigabit switch dgs-2208.  I will try a better gigabit nic.
What switch / router are you using?

Same switch, actually with an extra DGS-2205 in between too. Router is irrelevant as data doesn't go through it. Onboard NIC (Marvell Yukon 88E8056).