Choosing a VMware NIC: Should you replace your E1000 with the VMXNET3? fa icon='long-arrow-left' Back to all posts. The E1000 virtual NIC is a software emulation of a 1 GB network card. For recommendations to improve the performance of your business' virtual environment. ESXi 5 network performance is slow. What are you using for the guest's network adapters (e1000, vmxnet2, vmxnet3)? Server 2012 slow performance on ESXi 5.5. VMware Vmotion 5.1 fails at 51%, Between two identical new vmware servers. Disk performance very slow on esxi 6.
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Hi!
I have a esxi5.5 2403361 with i7 cpu, 32gb mem, adaptec 5805 with 6x2TB in raid 10 and Intel 82546EB 2 port 1Gb network card.
The host is almost idle.
I recently purchased a NAS for backups, which I connect via iSCSI
The backup speed is quite low, ~30MB/s
![Network Network](http://www.vmwarebits.com/sites/default/files/images/VirtualMachineTips/IPaddressusedmessage.png)
I tried the following:
Create new iscsi LUN on nas and map it to Win7 VM inside esxi (let's say, it's G:-drive).
- try cipher /W:G: , ~30MB/s
Disconnected the LUN and mapped it to a windows desktop machine
- try cipher /W:G: , ~110MB/s
Create a new virtual hard disk for a VM, and connect it
- try cipher /W:G: ~440MB/s
Open datastore with winscp from windows desktop
- copy a random OS image, ~30MB/s
So my conclusion if, that there is something slowing down the esxi-network. Is there anything more I could do to troubleshoot, or even fix the problem?