problem with asa failover

[jackeline]

I have two asa 5520. I want to put them in a failover configuration, but there is a problem because only one of them has an IPS module. Is there a way to solve this issue ?

[srue]

get a 2nd ips module, or get rid of the one.

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00807dac5f.shtml#req