Home network transfer speeds

mathie

Hi
Im transferring files from a laptop to a NAS.
Im getting less than 5 MB/s transferring.
Laptop has a Realtek PCIe FE Family Controller
10/100.

Shouldn't I be getting more?
Anything I can check

thanks
M

iioklo

The Realtek PCIe FE Family Controller
10/100, can transfer data up to 100 megabits per second which is equivalent to 12.5 Megabytes per second, your getting less than half the potential speed. I find when I transfer a large file over local network that I will get near full speed but when
I transfer loads of small files like pictures they each go at about 2 Megabytes per second.

mathie

Transferring a 10 gig file now and getting 4 to 5 MB per s.
Anything I can use to check what is causing the bottle neck?
Thanks

Alun

I find that if the file you're transferring is really badly fragmented it can dramatically reduce the transfer rate. I have a Synology NAS with gigabit Ethernet and can transfer files to it at over 100MByte/s if the source is unfragmented, but it can drop to around 35 if badly fragmented all other things being equal.

ED E

Old NAS? Older WDs etc had a write cap of about 4MB/s purely based on the onboard controller (think of what phones were like in 2006). It may just be all its capable of.

Johnboy1951

Check the ethernet cables ..... I recently used a Cat5 thinking it was Cat5e and was puzzled at lack of speed for a while.
(I have no idea where that cable came from, and except it being a bit thinner it looked like the others (Cat5e) until I checked the RJ45 plugs on the ends.

smuggler.ie

Cat5=max theoretical 100Mbps
Cat5e=max theoretical 1000Mbps

mathie wrote: »

Laptop has a Realtek PCIe FE Family Controller 10/100

= max theoretical 100Mbps, so laptop can not benefit from Cat5e

Most likely bottleneck is laptop HDD, but....
What NAS(make/model) you have?
What connection you NAS is on?
As it was mentioned by iioklo, big files go better.
NAS RAID configuration(in case 2+ disks) could have impact.

If you NAS Ethernet connected to consumer grade modem/router could have impact - i notice minor difference switching abilities (in my case it was Huawei B593, currently serving only Default Gateway and DHCP) is worse than between devices connected to dedicated switch.

If possible:
1. check transfer speeds from different device to NAS
2. introduce dedicated switch, so all/most devices would "talk" through it, avoiding modem/router switching.

Dr_Bill

Is the network card set to half-duplex? worth checking that first in the device manager. It should by default be set to Auto but you never know.