DSM-G600, DNS-3xx and NSA-220 Hack Forum

Unfortunately no one can be told what fun_plug is - you have to see it for yourself.

You are not logged in.

Announcement

#1 2008-09-07 04:26:23

BuckyBoy
Member
Registered: 2008-09-07
Posts: 9

direct lan connection possible? (pc <-> nas)

i tried this, but it didn't really work very well.. i can access the web menu using the ip address from easy search.. but i can't access the files through windows.. so for instance, the network share \\NAS\Volume1 doesn't work.

is it possible to do this or do i really need a router?.. I have a router, but that one is only 100Mbps and i want to use the GigaBit transfer to do a really large backup (like 500 GB or so).

Offline

 

#2 2008-09-07 05:55:47

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: direct lan connection possible? (pc <-> nas)

Yes it is possible, you will need to set static ip addresses or enable the DHCP server in the DNS-323 - it might also be necessary to use \\ipaddress\Volume_1

Offline

 

#3 2008-09-07 14:43:21

BuckyBoy
Member
Registered: 2008-09-07
Posts: 9

Re: direct lan connection possible? (pc <-> nas)

thanks.. using \\ipaddress in windows explorer worked, but i'm still getting very low speeds.. something like 17 MB/s.. is there a way to get better speeds?.. i tried the jumbo frame server (with firmware 1.05), but it actually made things worse.

Offline

 

#4 2008-09-07 20:04:45

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: direct lan connection possible? (pc <-> nas)

17MB/sec isn't that bad - it translates to 122 mbps so you know you're definitely over 100 mbps speeds.
 
You need to recognise a couple of things - network transfer speeds are only as fast as the slowest link in the chain - you're transferring data from disk #1 through disk interface #1 through network interface #1 across the network through network interface #2, through disk interface #2 to disk #2 - and your max throughput is going to be only as fast as the slowest of those.

Two places to consider - your network cables - cables that work well at 100 mbps may be problematic at gigabit speeds, especially those that may have been assembled by persons not adhering strictly to the IEEE specifications - and the other end of the link, I've come across some low priced gigabit NICs with very disappointing throughput - and I know that some Realtek cards perform distinctly better (but disappinting none the less) when used with the OEM drivers rather than the Microsoft ones that ship with Windows.

Transfer speed is also affected by file size - a single 2GB file will transfer a heck of a lot faster than 1000 x 2MB files, even though it's the same volume of raw data - this is due to the "housekeeping" required to keep directory and block allocation listings etc. up to date.

With jumbo frame you can get as much as 30MB/sec and I have seen one user claiming 35MB/sec - when you tried it - do both device support jumbo frame?  were they both configured for the same frame size?

Offline

 

#5 2008-09-08 01:03:29

BuckyBoy
Member
Registered: 2008-09-07
Posts: 9

Re: direct lan connection possible? (pc <-> nas)

thanks for the information.. but 122 Mbps is not bad?.. i was expecting something like 50 MB/s or more with Gigabit ethernet.. why else would it be called GIGA-bit? tongue

I have no idea what the bottleneck is atm, because i don't have any other gigabit devices to test with.. i'm using the built-in gigabit controller from my mainboard.. it's an "Attansic L1 Gigabit Ethernet 10/100/1000Base-T Controller".. so i have no idea if that's good or bad... i also don't know if it supports Jumbo frame server.. i thought it was a software thing.

and yeah the 17 MB/s is when copying a 4 GB file.. with small files it's even worse (as expected)

I'm using a standard 2m long "FTP" crossover cable.. it's not really cheap, but it's not branded either.

I have ordered a new Gigabit switch, which should arrive tommorrow.. i need that anyways, because all my router ports are taken already, but maybe it'll help get better speeds also.. with larger buffer to cache data perhaps? (I read in the wiki that the DNS-323 buffer is only 32 MB)

Offline

 

#6 2008-09-08 01:21:16

bq041
Member
From: USA
Registered: 2008-03-19
Posts: 709

Re: direct lan connection possible? (pc <-> nas)

The DNS is only rated to the low to mi 20's for transfer rate.


DNS-323     F/W: 1.04b84  H/W: A1  ffp: 0.5  Drives: 2X 400 GB Seagate SATA-300
DNS-323     F/W: 1.05b28  H/W: B1  ffp: 0.5  Drives: 2X 1 TB  WD SATA-300
DSM-G600   F/W: 1.02       H/W: B                Drive:  500 GB WD ATA

Offline

 

#7 2008-09-08 02:36:11

BuckyBoy
Member
Registered: 2008-09-07
Posts: 9

Re: direct lan connection possible? (pc <-> nas)

really?.. then what's the point of using RAID-0 array on DNS-323?

Offline

 

#8 2008-09-08 04:09:42

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: direct lan connection possible? (pc <-> nas)

BuckyBoy wrote:

really?.. then what's the point of using RAID-0 array on DNS-323?

I don't see how this relates to your previous question - but - based on tests done, RAID0 on DNS-323 offers no performance advantage.

And to go back to your question on GIGA Bit - I doubt you're going to see 50MB/s across your new gigabit network switch anytime soon - if you want to know why, read my earlier post

Last edited by fordem (2008-09-08 04:12:30)

Offline

 

#9 2008-09-08 16:17:32

bspvette86
Member
Registered: 2008-05-09
Posts: 81

Re: direct lan connection possible? (pc <-> nas)

I have tested the speed difference between Raid-0 and individual disks many times and the speed does not improve with Raid-0 on the DNS-323.  Doing reads directly on the 323 I get rougly 40-45 MB/s for both Raid-0 and Individual disks.  When the network is involved, Throughput drops considerably and is much worse using Raid-0.

Regards,
BSPvette

Offline

 

#10 2008-09-08 16:38:48

BuckyBoy
Member
Registered: 2008-09-07
Posts: 9

Re: direct lan connection possible? (pc <-> nas)

would it help if you use a cat6 cable? (instead of cat5e).. or perhaps the problem is that i'm using a crossover cat5e cable.. i read somewhere that only two wires are used for such cables.. because crossover for cat6 is very different from crossover cat5e.. in fact crossover cables are not needed anymore at all for gigabit hardware.. at least that's what i read. smile

Offline

 

#11 2008-09-08 17:38:40

bspvette86
Member
Registered: 2008-05-09
Posts: 81

Re: direct lan connection possible? (pc <-> nas)

Offline

 

#12 2008-09-08 17:54:07

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: direct lan connection possible? (pc <-> nas)

Feel free to try CAT6, cross over or not, it doesn't really matter.

Just bear in mind you're not going to see anything near to 50 MB/sec with this device - without jumbo frame 15~20 MB/sec (at 122 mb/sec, you're getting roughly 15MB/sec), with jumbo frame you might get as much as 30 MB/sec

Offline

 

Board footer

Powered by PunBB
© Copyright 2002–2010 PunBB