It’s getting harder and harder to decide whether to choose physical devices to do L4-7 processing (stateful- and web application firewalling, load balancing, VPN termination, WAN optimization) in your virtualized data center, or whether to deploy VM version of the same appliances.
Physical devices usually perform better. Virtual appliances are more flexible, but don’t scale well ... and Embrane just complicated your decision-making process: they launched scale-out distributed virtual appliance architecture and products that combine the best of both worlds.
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