1、1234567ClientsIIS Web Server or other IP based servicesNetwork Load Balancing123234COM+ComponentsComponent Load Balancing*Application Servers1283*=Component Load Balancing is delivered through the Application Center 2000 product.Data Servers SQL,Exchange,File Server Cluster 1234891011121314151617181
2、92021222324252627282930313233343536373839Latency=500 MSVirtual LANs Appear as 1 Network to ClusterMinneapolisChicago40Site A Site B Up to 100kmPath APath BFC switchHSG80RAID ControllerHSG80RAID ControllerFC switchFC switchHSG80RAID ControllerHSG80RAID ControllerFC switchone wayother way4142多个群集可配属到相
3、同的存储结构上存储设备必须在Multi-cluster device HCLServer+Fabric+Storage 必须是作为一个完成的方案在群集的HCL目前没有针对fabric switches认证过程Windows 2000服务器群集支持存储区网络服务器群集支持存储区网络ClusterClusterClusterJBODStorageArraySAN Fabric43Cluster 3Cluster 2Cluster 1JBODCluster 1ZoneCluster 2ZoneCluster 3ZoneStorageArray444546474849505152FibreConnec
4、tionServerServerServerServerDataInst2DataInst3DataInst4DataDataDataDataSQL Server ClientServer1Server2Server3Server4Local BinariesLocal BinariesLocal BinariesLocal BinariesSQLCLUSTAINST1131.107.2.11SQLCLUSTDINST4131.107.2.14SQLCLUSTBINST2131.107.2.12SQLCLUSTCINST3131.107.2.13Clients only see thebold
5、ed names as theconnection points.DataInst153CREATE TABLE UsersAF(UserName VarChar(50)NOT NULL PRIMARY KEY CHECK(UserName=F),Email VarChar(50),FirstName VarChar(20),LastName VarChar(30)CREATE TABLE UsersGZ(UserName VarChar(50)NOT NULL PRIMARY KEY CHECK(UserName=G),Email VarChar(50),FirstName VarChar(
6、20),LastName VarChar(30)CREATE VIEW Users ASSELECT*FROM Demodb.dbo.UsersAFUNION ALL SELECT *FROM ServerB.DemoDB.dbo.UsersGZCREATE VIEW Users ASSELECT*FROM Demodb.dbo.UsersGZUNION ALL SELECT *FROM ServerA.DemoDB.dbo.UsersAF DTC needs to be running on both machines Need to set XACT_ABORT on(execute SET XACT_ABORT ON)Read or Update545556IP AddressNetwork NameShared Storage Exchange Resources57MAPIEVS1StorageGroup 1 EVS2 EVS3StorageGroup 2StorageGroup 3IMAPIP2POPHTTPSMTPIMAPIP3POPHTTPSMTPName 1Name 2Name 3IMAPIP1POPHTTPSMTP58EVS2EVS1EVS1HTTP,POP,IMAP,MAPI59606162636465666768697071
