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98 Failover, Failback, and Restoration
If DNS failover was selected, the clients will have to wait for the IP cache to expire, or type in “ipconfig
/flushdns
” in a command window. This time can be adjusted by lowering the TTL (Time to Live) setting within
your DNS server’s configuration. For more information, refer to your DNS server documentation.
Failback and restoration
If your source experiences a failure, such as a power, network, or disk failure, your target machine will stand in
for the source while you resolve the source machine issues. During the source machine downtime, data is
updated on the target machine. When your source machine is ready to come back online, the data is no
longer current and must be updated with the new data on the target machine.
Before you begin to restore to the original source, resolve the issue(s) that caused the failure.
If the source server has to be rebuilt, follow the instructions in ”Rebuilding the Source” on page 109.
Recovering to the original source
1. After repairing/rebuilding the source server offline, bring the server up but leave the network connection
disabled by unplugging the cable or disabling the network interface adapter.
2. Stop all of the services on the source so that you can overwrite the data with the newer data on the target.
Because the source server cannot communicate with a domain controller because its network connection is
still inactive, this will take longer than normal. The following table lists the services that must be stopped, in
the order in which they must be stopped. Stop the services appropriate to your application.
3. On the target, open the Failover Control Center (
Start, Programs, Storage Mirroring, Failover Control Center).
4. Double-click the target machine that is currently standing in for the failed source to login.
5. Highlight the failed source and click
Failback. The failback script created earlier will automatically run.
During failback, Windows Event Viewer and the Storage Mirroring log record the failback events. When
failback is complete, the services will be stopped on the target and the Failback Complete dialog box will
appear.
Exchange 2007
Exchange 2000/2003 SQL
Microsoft Exchange Active Directory
Topology Service
MSExchangeSA MSSqlServer
Microsoft Exchange Anti-spam Update MSExchangeMGMT SQLServerAgent
Microsoft Exchange EdgeSync POP3SVC MSSearch (SQL 2000)/MSFteSQL
(SQL 2005)
Microsoft Exchange File Distribution IMAP4SVC MSSQLServerADHelper
Microsoft Exchange IMAP4 ResVC MSDTC
Microsoft Exchange Information Store MSExchangeES MSSQLServerOLAPService
Microsoft Exchange Mail Submission W3SVC MSDTSServer
Microsoft Exchange Mailbox Assistants SMTPSVC SQLWriter
Microsoft Exchange POP3 SQLBrowser (SQL 2005)
Microsoft Exchange Replication Service
Microsoft Exchange Search Indexer
Microsoft Exchange Service Host
Microsoft Exchange System Attendant
Microsoft Exchange Transport
Microsoft Exchange Transport Log Search
Microsoft Search (Exchange)
World Wide Web Publishing Service
- HP StorageWorks 1
- Contents 3
- About this guide 7
- HP technical support 8
- Customer self repair 8
- Product warranties 9
- Subscription service 9
- HP web sites 9
- Documentation feedback 9
- 1Introduction 11
- 2Introduction 12
- SharePoint 13
- File server 13
- Requirements 14
- Exchange Manager requirements 15
- SQL Manager requirements 16
- Related documentation 17
- Readme files 18
- Menu options 21
- Using the online help 23
- Getting 25
- Select a task 26
- Select a domain 26
- Configure protection settings 28
- Failover settings 29
- Identity failover 31
- Services 32
- Resources (cluster only) 33
- Failover monitoring options 33
- Connection settings 34
- Protected storage groups 35
- Mirror type 35
- Enable compression 35
- Advanced settings 36
- Failover/failback scripts 37
- Force AD replication 38
- Target(ed) domain controller 38
- Saving configuration changes 39
- Prerequisites 41
- Permissions 41
- Multiple EVS 41
- Standby cluster configuration 41
- Enabling protection 44
- Dealing with a failure 45
- 5Protecting a SQL Server 47
- Add or manage servers 50
- Failover trigger 56
- Manual intervention required 56
- Database Only 58
- Replication set rules 62
- 54 Protecting a SQL Server 64
- 6Protecting a File Server 65
- 68 Protecting a File Server 78
- Getting Started 79
- Select SharePoint front end 82
- Items to failover 93
- SharePoint settings 94
- 8 Validate the Configuration 97
- 88 Validate the Configuration 98
- Enable protection 99
- Disable protection 100
- Monitor protection status 100
- Protection detail states 101
- User’s Guide 102
- Initiating automatic failover 105
- Initiating manual failover 106
- Failback and restoration 106
- Initiating a failover 107
- Re-enabling protection 109
- A Recommended Credentials 111
- Exchange Credentials 115
- SQL Credentials 116
- SharePoint Credentials 117
- 108 Recommended Credentials 118
- B Rebuilding the Source 119
- 110 Rebuilding the Source 120
- 112 Rebuilding the Source 122
- C:\Program Files\Research In 123
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