Slow copy speed between LUN and ESXi on iSCSI
Posted on 2011-09-11
NAS = Qnap 419u+
ESXi 4.1 = Dell R710
(also connected the LUN to a ESXi 3.5 server)
So i was experiencing slow speed when using my Qnap 419u NAS as a network disk on my ESXi 4.1 server. Took around 8 hours to copy 20Gb
So i decided to make a iSCSI setup.
Enabled iSCSI on the NAS, gave 2Gb on the LUN. the NAS adress is 10.0.0.15.
Added the LUN in the ESXi server, and i realised the speed still was the same. the ESX adress is 82.XX.XX.100
So then i added a NIC on the same subnett as the NAS, with adress 10.0.0.20 as a VMkernel.
This did not boost my speed. Do you have any idea what i could do to boost my speed more?
I have 2 switches, one for the 82.XX.XX.XX net and one for the 10.0.0. net. (both Gigabit)
There are 1 firewall that connects these 2 nets together. (firewall is only 10/100).
I could post a network chart if this is necessary.
But the speed is still around 3 mbit a second. its insanly slow, and it takes around 8-10 hours to copy a 20 gb VM..