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Forum Discussion
Read Speed 3 x Slower than Write!!?
Hi
I have recently purchased a ready Nas duo v2 ( 2 x 3tb Seagate barracuda drives - flexraid 0)
Im seeing horrific read performance of around 1.5 MB/s where as write speed is around 4.5 MB/s
ReadyNas Duo V2 is connected to Sagemcom router (sky - fast Ethernet ports only) by what I presume is a cat5 cable included within the ready nas.
I am then connecting wirelessly from mylaptop. ( 300MB/s wireless network adapter)
Im totally stuck as to why read speed is 3 x slower than write speed, does anyone have any ideas where to look? ( there's not issue with the speed of the disks in my laptop as its using 2 SSD Drives (RAID 0) )
Any suggestions / ideas at all welcome
Thanks
I have recently purchased a ready Nas duo v2 ( 2 x 3tb Seagate barracuda drives - flexraid 0)
Im seeing horrific read performance of around 1.5 MB/s where as write speed is around 4.5 MB/s
ReadyNas Duo V2 is connected to Sagemcom router (sky - fast Ethernet ports only) by what I presume is a cat5 cable included within the ready nas.
I am then connecting wirelessly from mylaptop. ( 300MB/s wireless network adapter)
Im totally stuck as to why read speed is 3 x slower than write speed, does anyone have any ideas where to look? ( there's not issue with the speed of the disks in my laptop as its using 2 SSD Drives (RAID 0) )
Any suggestions / ideas at all welcome
Thanks
49 Replies
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- could it be due to some configuration on my laptop?
with firewall turned off I see the same issue - It could also be something not right with your wifi adapter or your router.
Have you tried other wifi channels? Also, how far is the laptop from the router?
You are doing this test using your local LAN IP? That is, you are not using a ddns name or something like that? - tried other channels, I have 13 available, no difference though.
Laptop about 2 metres away from router during tests
Using local lan ip yes - Look for network errors on your laptop. Should be able to add them to task manager I believe, or use the windows perf monitor thing. Also if it's a managed switch you could look there. Could check the nas stats too to see if there are retransmits. That's in frontview.
- The first few bytes transfer at about 5MB/s .. after about 2 seconds this drops to about 1.5MB/s
dsm1212 wrote: Look for network errors on your laptop. Should be able to add them to task manager I believe, or use the windows perf monitor thing. Also if it's a managed switch you could look there. Could check the nas stats too to see if there are retransmits. That's in frontview.
-I don't believe you can see network errors from the task manager or the resource manager. You can see them by opening up a cmd window and typing "netstat -e". Errors and discards are shown
-He doesn't have a managed switch. Though the router might have some useful stats.
-anynamewilldo85 - are you sure you have a v2? The labels can be misleading, so check here: http://www.rnasguide.com/2012/01/09/how ... -or-nv-v2/ I'm not sure where you see network stats on the v2 (or which ones it shows). I have the v1, pro, and RN102... but no v2.- Yes I have Readynas duo v2
- I don't see anywhere in the console that shows any network stats though
Maybe a v2 owner can either identify where they are or that they are not there.anynamewilldo85 wrote: I don't see anywhere in the console that shows any network stats though
PC and router stats on the wifi link would be more useful though.- its a sky sagemcom router - pretty limited console options too unfortunately
don't some more tests changing the chanel - 13 available - some give worse performance, but nothing better than 2MB/s read and 5 MB/s write - still slow read.
Each time I run attest read speeds start at 4/5mB/s then drop to 2MB wthin seconds
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