SQL server HA when running with PCI Flash device

Question

I want to purchase a PCI based Flash storage device for our ESXi server hosting our SQL Server machine.

1. We use SQL Server 2008 standard edition.
2. storage is on Netapp via NFS.
3. It is a VM (ESXi 5.1)

Since I don't think I can trust the single PCI device as I do with Netapp I want to be able to fall back as quickly as possible.

What are my best (quick and cheap) options for this?

Thanks.