Try to setup the access points on the same controller to prevent too much inner controller roaming. For example.... if you have 2 4404-100 and you have a max 100 ap's, what you can do is either have all the ap's on WLC1 and use WLC2 as a backup. Another way is to separate the ap's to WLC by floor. Floor 1-3 on WLC1 and floor 4-6 on WLC2. The roaming should be fast anyways, but as long you try to keep the user on a certain WLC then you wouldn't have to worry about the roaming between WLC's. Hope this makes sense.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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