Thanks David,
Option C has crossed our minds. 🙂
For options A and B as you listed them, forgetting any specific solution "requirements", how would we accomplish the closest realistic architecture?
"single" volume accessed:
via CIFS
using a single UNC path (DFS?)
from MS Windows 2003 servers in two data centers on opposite ends of North America (~2500 miles)
with authentication/authorization via Active Directory
where application servers from both data centers will be performing both read and write operations
and long-haul WAN uses OC-48 2.5G SONET with ~60ms latency coast-to-coast (max payload: ~2400 Mbit/s)
Keeping in mind requirements for full HA capabilities and DR considerations, preferably without outage during DR fail-over.