Network Performance TI 2015
Hello out there,
I have a full backup of my PC on a NAS-Server.
The data-partition is made of 4x3TB WD Black Harddrives.
Now I want to restore the data (4,5TB) from the backup.
But the performance is very low. The data is copied with only ~3,5MB/s.
If I try normal copy (in both directions) with windows explorer I reach ~50MB/s.
I already looked in the Forum and tried all the hints, but the "speed" ist still the same
System: Asrock P67 Extreme 6; i7-2600K, 16GB RAM, W7P 64bit
NAS-Server: (Synology Diskstation DS413j).
All Network Adapters have 1GB/s
Thanks for help in advance
Roman


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Those WD Black drives in your NAS should be capable of reaching near 100MBps or better in simple copy file transfers. You should check to make certain that all network connected devices are running and/or capable of gigabit speed. If not, one device in the mix that is running at say 10/100 will slow all other devices down to that speed.
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Enchantech wrote:Those WD Black drives in your NAS should be capable of reaching near 100MBps or better in simple copy file transfers. You should check to make certain that all network connected devices are running and/or capable of gigabit speed. If not, one device in the mix that is running at say 10/100 will slow all other devices down to that speed.
Yes, that is possible. It may depend on how individual devices are connected to the network. I have several PVRs that are 10/100, and 6 computers and the NAS that are 10/100/1000. However, all the PVRs are attached to a 10/100/1000 switch that is then attached to central 10/100/100 switch. That switch also connects to the Cable Modem and has two connections to the Synology NAS as well as a connection to the 10/100/1000 switch that the computers are attached to. My NAS has 3 SATA 3 WD Red 4TB HDD and the initial SATA 2 1TB WD Black in Raid 5 configuration. I also get single file transfers to the NAS at about 100MBps.
Ian
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IanL-S wrote:Yes, that is possible. It may depend on how individual devices are connected to the network. I have several PVRs that are 10/100, and 6 computers and the NAS that are 10/100/1000. However, all the PVRs are attached to a 10/100/1000 switch that is then attached to central 10/100/100 switch. That switch also connects to the Cable Modem and has two connections to the Synology NAS as well as a connection to the 10/100/1000 switch that the computers are attached to. My NAS has 3 SATA 3 WD Red 4TB HDD and the initial SATA 2 1TB WD Black in Raid 5 configuration. I also get single file transfers to the NAS at about 100MBps.Ian
The introduction of a second switch into the network can influence the outcome here as you suggest. A second switch to which all 10/100 devices connect to can isolate those devices from the rest of a gigabit network but this can be switch dependent with some switches not working in such a manner.
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Enchantech wrote:The introduction of a second switch into the network can influence the outcome here as you suggest. A second switch to which all 10/100 devices connect to can isolate those devices from the rest of a gigabit network but this can be switch dependent with some switches not working in such a manner.
The switch in question is a heavy duty 8 port Netgear switch. It is for SOHO rather than basic domestic use. That is why I chose it for that purpose.
Ian
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Hello Everyone,
thanks for all the replies.
I have again checked all the network devices. All of them are 10/100/1000.
But there are two switches between the PC and the NAS. So I removed one and connected the PC directly to the second.
That improved the transfer rate by factor 4. So instead of 16 days we had 4 days to finish the recovery.
At the end the process remained at "less then 1 Minute" for almost 12 hours. Why? Then I stopped it.
In the next days I will start an evaluation with highest performance settings. They have been a the lowest.
I will post the result.
Regards
Roman
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