I'm getting ridiculously slow speeds on my network when copying files, not only from wireless but also hardwired machines.
Hardware:
2 Laptops - 802.11g, both Windows Vista Business SP1
1 desktop - gigabit nic, Windows Vista Ultimate SP1
1 Server - gigabit nic, Windows Home Server PP1 & PP2
1 xBox 360
Router/switch: D-Link DI-724GU
Problems:
- When copying large files on the desktop to/from the WHS : it will start at 60mb/s and after a certain amount of time dramatically drop to 300kb/s.
- When copying large files from the notebook to/from the WHS: start at 4-6mb/s and dramatically drop to 300kb/s
Notes:
- In both cases, the network utilization will start high, usually around 80% and then dramatically drop off to between 0.5-2%.
- Streaming HD video from WHS to any device encounters no problems. Network utilization on the notebooks is high, but it maintains the rate. It does not drop off like copying large files
..- Because of this, I don't think it's hardware related.
- It almost seems like a packet is dropped, and then it has troubles resuming the file transfer.
Attempted Resolutions:
- Disabled remote differential compression
- Enabled jumbo frames (4k and 8k) on the server and PC
- tried tcp autotuning levels on normal, high, and disabled
- turned on cctp, turned it off
Potential problems areas:
- Recently I replaced my WHS machine. It used to be a P4 1.8, a mix of hard drives on a 100mbt nic. I replaced it with a Dual Xeon 3.6ghz, 6 x 500gb drives w/ dual gig nics (i'm only using one). However, it only has 1GB of RAM (DDR400 ECC REG)
..- Could the 1GB of RAM be the culprit for file copying?
..- The drivers for the network card on the server are circa 2006/2007. There are no newer drivers for it (integrated NIC on intel SE7520BB2D2 serverboard)
- WHS is watered down Windows Server 2003. I know during the RC and original release there were huge problems with file copying from Vista to any other OS. This issue was supposedly fixed in SP1..
..- Any network admins run an office with Vista Business workstations and Server 2003 encounter this problem?
Any help would be appreciated... i'm fucking losing it
I will not consider using XP PRO, or not using WHS as solutions.