1. High Availability and Disaster Recovery (OLTP)---a Technical Reference Guide for Designing Mission-Critical OLTP Solutions
2. High Availability Solutions (SQL Server)
3. High Availability and Disaster Recovery at Service: A SQL Server 2008 Technical Case Study
4. Microsoft SQL Server AlwaysOn Solutions Guide for High Availability and Disaster Recover
5. Quorum: How a Witness Affects Database Availability (Database Mirroring)
6. Quorum vote configuration check in AlwaysOn Availability Group Wizards (Andy Jing)
7. WSFC Quorum Modes and Voting Configuration (SQL Server)
8. Cross-Database Transactions Not Supported For Database Mirroring or AlwaysOn Availability Groups (SQL Server)
9. Database Mirroring (OLTP)---a Technical Reference Guide for Designing Mission-Critical OLTP