SMB Slow Speeds

[NoFate]

I dont know how you guys get good SMB copy speeds over the network

i have the issue with my HP gen 8 xeon on esxi 6.5 SATA setup (no scsi raid), with synology 5.2 , 6.1 1.02 , 6.1 1.02a

so all versions in fact

 

what happens, i do a clean install, just setup 1 shared folder

so i start copying from my laptop over 1 gb network to synology, transfer speeds are looking verry good, arround 110 MB/sec , then after a miniute or something, the speed drops to like 8-9 MB and is verry slow and constant drops (tested with a file of 5-10 GB)

 

PS: dont have issues when running in bare metal

 

here below some screens of my setup

doesnt mather if i add more/less processors/memory, also tried SATA controller/SCSI controller

what am i missing to get good SMB speeds?

 

thnx

 

screens see attached

[MikeH]

Hi,

 

Have you recently upgraded to ESXI 6.5?

 

Once i upgraded I had terrible hard disk speeds, ESXI kept crashing and Xpenology lost my disk configuration every time I rebooted it.

 

I found out that ESXI 6.5 uses a new storage driver which can cause speed problems. Once disabled and it reverted back to the old default driver everything worked fine.

 

See this article to check:

 

http://www.nxhut.com/2016/11/fix-slow-d ... i.html?m=1

 

Hope this helps?

[NoFate]

ok, gonna try it out

 

what esxi version you used before? because i see in that link you posted a reply :

 

 

I'm experienced low write performance on my SSD disk (50-120MB/s) under ESXI 6.5. First I disable vmw_ahci but transfer was more/less the same, Also I did revert ESXI to 6.0 u2 but again the same.

[MikeH]

I was on ESXi 6.0 before updating and that was not me who posted on there.

 

I've just found the article I used:

 

http://www.opvizor.com/esxi-6-5-storage ... s-and-fix/

 

Before I applied the fix I used the ESXTOP command to check my speed and they were around 20MB/s and I also checked the HBA ports and I only saw one.

[NoFate]

gonna check it out, thnx