I made some tests on my DS620slim (all SSD), as I was not 100% happy with the difference between Read speed (115MB/s=ok), and Write speed (78MB/s=low).
Both speeds from windows 10, with samsung M2 SSD, CAT6 cables, Netgear GS109E switches (2x) between pc and nas. reading and writing a file 400MB, and 4000MB.
Checked on second pc (laptop, one switch): similar speed difference. Used two different speed test tools.
Resource monitoring does not show many clues, CPU, memory etc <25% used, nas is actually doing almost nothing. IO speed is given similar to the data from the nas speed test, although there are spikes in the write speeds, not in the read, that one is more flat.
I switched off IPV6 in the NAS network settings and write speed went up to 88MB/s. Still not 100% happy, but pretty acceptable.
Rest of te settings, I think are standard, SMB3, MTU 1500, nothing out of the standard, except some firewall rules.
Also changed: disabled IPV6 on W10 pc NIC, and on the Router, but this did not change the write speed in either way.
So it seems to be the NAS that struggles with IPV6, and only on the write, read is fine.
Any thoughts?
Both speeds from windows 10, with samsung M2 SSD, CAT6 cables, Netgear GS109E switches (2x) between pc and nas. reading and writing a file 400MB, and 4000MB.
Checked on second pc (laptop, one switch): similar speed difference. Used two different speed test tools.
Resource monitoring does not show many clues, CPU, memory etc <25% used, nas is actually doing almost nothing. IO speed is given similar to the data from the nas speed test, although there are spikes in the write speeds, not in the read, that one is more flat.
I switched off IPV6 in the NAS network settings and write speed went up to 88MB/s. Still not 100% happy, but pretty acceptable.
Rest of te settings, I think are standard, SMB3, MTU 1500, nothing out of the standard, except some firewall rules.
Also changed: disabled IPV6 on W10 pc NIC, and on the Router, but this did not change the write speed in either way.
So it seems to be the NAS that struggles with IPV6, and only on the write, read is fine.
Any thoughts?