Ok, let's start with the biggy - the folder dayz_1.sara and all the files held within it.
This collection isn't included in the 0.78 Server download.
As linked to at the very start of this thread:
http://www.mediafire.com/download/yv3avbyjadfw6dd/DayZ_Sahrani_0.7.8_Server.zip
or
http://www.mediafire.com/download/yv3avbyjadfw6dd/DayZ_Sahrani_0.7.8_Server.zip
This implies (to me coming fresh to this Mod) it is the full Server release.
I got my copy of this folder from the 0.21 download at:
http://opendayz.net/threads/dayz-sahrani-0-2-1-server-client-file-release.10605/
I downloaded 0.21 then overwrote it with 0.7.8 and it works (well apart from BEC kicks, I have to turn that off at the moment to get on.)
I should say I'm using the vanilla Sahrani without modding it what-so-ever.
Using ARMA2 Beta patch 107882 on Windows 8 Pro 64bit, MySQL 5.5
Other files which may be missing from the 0.78 Server are the DLLs used in the root of 0.21 Server release?
It seems to be working though. I get zombies, loot (not found any vehicles yet. But early days.