Lesson 1: Configuring Backups in Visual Studio .NET

Printer QR-Code in Visual Studio .NET Lesson 1: Configuring Backups

Lesson 1: Configuring Backups
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If, on the other hand, you back up everything in your Exchange Server 2007 organization, you will likely be able to completely restore all critical data and configuration settings. However, if you back up all the data in your organization, your backup and restore processes will be more complex and more time consuming and will require more backup media space. To determine exactly what data that you need to back up to successfully recover from a disaster, Microsoft recommends that you practice disaster recovery procedures in a test environment before you implement a backup strategy on production servers. Additionally, after you have implemented a backup and recovery strategy, you should conduct test restore operations regularly to make sure that you will be able to recover from whatever disaster might occur.
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After this lesson, you will be able to:
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Create and modify backup jobs. Confirm backup validity. Monitor backups for successful completion. Configure shadow copy.
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Estimated lesson time: 50 minutes
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Selecting a Backup Type
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Later in this lesson, you will look at what you need to back up for each Exchange Server 2007 server role. However, whatever else you back up, you must protect enduser data. In Exchange Server 2007, end-user data is stored in the mailbox and public folder databases on mailbox servers. Transport data in transport queue databases is transient, and there is no need to back up the queue database. You need to protect mailbox and public folder databases by point-in-time backups. Whatever overall disaster recovery strategy you select, mailbox and public folder databases must be protected with backups because they contain user data. A backup provides a point-in-time copy of the data that can be restored to a server at a later time.
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NOTE
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Windows Server 2008 backup
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When this chapter was written, a 64-bit version of Windows Server 2008 was not available to support Exchange Server 2007. Therefore, the practices in the chapter are written for the Windows Server 2003 backup utility (NTBackup). If your test computer's operating system is Windows Server 2008, the practices will differ from those described (although not radically). In this case, it is an instructive exercise to amend the practices to use the Windows Server 2008 backup utility.
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12
Configuring Disaster Recovery
Exchange Server 2007 provides the following methods of database backup:
Legacy streaming backup
Legacy streaming backup (NTBackup) uses the Extensible Storage Engine (ESE) application programming interface (API). Streaming backup technology is used by Microsoft Windows Server Backup as well as many third-party products. This technology has been available in previous versions of Exchange and has a mature feature set.
Exchange Server 2003 introduced support for VSS and this support is extensively enhanced in Exchange Server 2007. However, Microsoft does not provide an Exchange-aware VSS based backup solution. NTBackup does not support VSS. Third-party backup software is required to back up the Exchange database with VSS.
Backup Categories and Types
Both backup methods support complete backup and change-only backup categories. The following types are available:
Full backup A complete backup that archives every selected database and all necessary log files. When a full backup completes, it deletes log files older than the checkpoint at the time the backup started. If you perform a full backup on a daily basis, you can prevent log files from consuming space on the hard disk. Microsoft recommends daily full backups unless you use continuous replication, in which case weekly full backups are adequate. Local continuous replication (LCR) and cluster continuous replication (CCR) are discussed later in this lesson. A full backup is sometimes known as a normal backup. Copy backup A complete backup that is the same as a full backup except that
log files are not deleted at the completion of the backup. You can perform a copy backup if you want to save a copy of your Exchange databases at a specific point in time, for example, for archiving.
Incremental backup A change-only backup that archives the transaction log files created since the last full or incremental backup. When an incremental backup completes, it deletes log files older than the checkpoint at the time the backup started. Differential backup A change-only backup that archives the transaction log files
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