21. 首要條件 - 建立 Site to Site VPN
Hardware VPN or
Windows RRAS
WA
Gateway
Site to Site
On-Promise 192.168.2.0 /24 Azure 10.2.0.0 /16
Azure VMAD
192.168.2.1
SQLAG1
192.168.2.5
Server Name
RRAS 192.168.2.50 / 118.x.x.x (Public IP)
AD 192.168.2.1
SQLAG1 192.168.2.5
27. SQL Server DR between On-Premise and Azure
Technology SQL Server Version Zero Data Loss Scope # Secondaries Automatic
Failover
Readable
Secondaries
Availability
Groups
SQL Server 2012 Yes*
(Sync Mode)
DB(s) 4 Yes
(w/ additional
cluster member)**
Yes
Database
Mirroring
SQL Server 2008 R2
SQL Server 2012
Yes*
(High Safety
Mode)
DB 1 Yes
(w/ Witness)**
Limited
(database
snapshots)
Log
Shipping
SQL Server 2008 R2
SQL Server 2012
No DB N No Limited
(standby state)
*避免影響主要節點的效能 ,建議大多的客戶使用 Async Mode (高效能模式)
**Async Mode 只支援手動容錯移轉Failover to make DR (and potential data loss) a conscious decision