I am reading through the ASA 8.x release notes for a potential upgrade. Currently, a device is running OS 7.22 and ASDM 5.22. It has 256DRAM and 128 MB flash. I think the confusing area is the amount of flash I need. I keep reading I need to get 256 or 512 MB compact flash for the device. Is this something I need to do? If so, what version of software for an ASA should I used for the configuration I already have?