Best practices for running Citrix NetScaler ADC (VPX) on Proxmox VE? VirtIO crashes under backup load

[j.gelissen]

Hi everyone,

we are migrating Citrix NetScaler ADC (VPX) from VMware to Proxmox VE and I’m looking for best-practice VM settings.

On VMware the VPX has always run fine with:

• NIC: E1000
• Disk controller: LSI Logic

On Proxmox, the only setup where the VPX currently boots and works for me is:

• Disk: VirtIO SCSI (single)
• NIC: VirtIO network adapter

However, under heavy load (especially during backups), the VM crashes or becomes unresponsive, and I suspect this is related to VirtIO not being properly supported for this FreeBSD-based appliance.

So my questions:

1. Which SCSI controller and NIC model are recommended for NetScaler ADC VPX on Proxmox (ideally equivalent to VMware’s LSI + E1000)?
2. Which OSType do you use for VPX in Proxmox (since there is no FreeBSD option)?
3. Any known issues or best practices regarding backups / high network load with this setup?

I’m mainly looking for a stable, migration-friendly configuration that doesn’t crash during backups.

Thanks!

Jan