How to Configure Networking and System Tuning for a Syneto HC Environment in VMware ESXi

Written By Sebastian Sime (Super Administrator)

Updated at June 30th, 2026

Table of Contents

→ Applies to: VMware ESXi 7.x and above

 

Via CLI

Step 1. Connect to VMware ESXi CLI ("How to Connect to Vmware ESXi CLI")

Step 2. Create the internal vSwitch

esxcli network vswitch standard add -v vSwitch1

 

Step 3. Create the VMkernel portgroup

esxcli network vswitch standard portgroup add --portgroup-name="Syneto HC VMKernel Network" --vswitch-name=vSwitch1

 

Step 4. Create the API portgroup

esxcli network vswitch standard portgroup add --portgroup-name="Syneto HC API Network" --vswitch-name=vSwitch1

 

Step 5. Create the vmk1 interface

esxcli network ip interface add --interface-name=vmk1 --portgroup-name="Syneto HC VMKernel Network"

 

Step 6. Assign a static IP to vmk1

esxcli network ip interface ipv4 set -i vmk1 -I 172.16.254.1 -N 255.255.255.0 -t static

 

Step 7. Tag vmk1 as Management

esxcli network ip interface tag add -i vmk1 -t Management

 

Step 8. Set the NFS volume limit

esxcfg-advcfg --set 256 /NFS/MaxVolumes

 

Step 9. Disable ACS check

esxcli system settings kernel set -s disableACSCheck -v TRUE

 

Step 10. Reboot the system

reboot

 

Via GUI

Step 1. Login to VMware ESXi GUI (replace <your_ip_address_or_hostname> with the correct ip/hostname)

https://<your_ip_address_or_hostname>

 

Step 2. Click on Networking

 

Step 3. Click on Virtual switches

 

Step 4. Click on Add standard virtual switch

 

Step 5. Set vSwitch1 and click Add

 

Step 6. Click on Port groups

 

Step 7. Click on Add port group

 

Step 8. Set Syneto HC VMKernel Network, select vSwitch1 and click Add

 

Step 9. Set Syneto HC API Network, select vSwitch1 and click Add

 

Step 10. Click on VMKernel NICs

 

Step 11. Click on Add VMkernel NIC

 

Step 12. Select Syneto HC VMkernel Network


Step 13. Open IPv4 settings, select Static Configuration, set the Address and Subnet Mask, check Management, and click Create

 

Step 14. Click on Manage

 

Step 15. Click on System

 

Step 16. Click on Advanced settings

 

Step 17. From the upper-right corner, search NFS.MaxVolumes and click on Edit option

 

Step 18. Set the value to 256 and click on Save

 

Step 19. From the upper-right corner, search Net.TcpipHeapSize and click on Edit option

 

Step 20. Set the value to 32 and click on Save

 

Step 21. From the upper-right corner, search Net.TcpipHeapMax and click on Edit option

 

Step 22. Set the value to 1536 and click on Save

 

Step 23. From the upper-right corner, search disableACSCheck and click on Edit option

 

Step 24. Set the value to True and click on Save

 

Step 25. Reboot the system