NetBackup™ Web UI Microsoft SQL Server Administrator's Guide
- About NetBackup for SQL Server
- Installation and host configuration
- Planning the installation of NetBackup for SQL Server
- Configuring SQL Server hosts and user permissions
- Configuring RBAC for SQL Server administrators
- Managing SQL Server discovery and credentials
- Managing protection plans for SQL Server
- Create a protection plan to protect SQL Server assets
- Configuring backup policies with Snapshot Client
- Using copy-only snapshot backups to affect how differentials are based
- About SQL Server agent grouped snapshots
- Viewing SQL Server asset details
- Restoring SQL Server
- Using instant access with SQL Server
- Prerequisites when you configure an instant access SQL Server database
- Protecting SQL Server with VMware backups
- About protecting an application database with VMware backups
- Create a protection plan to protect SQL Server data with a VMware backup
- Performance and troubleshooting
- About debug logging for SQL Server troubleshooting
- About disaster recovery of SQL Server
About minimizing timeout failures on large SQL Server database restores
A large SQL Server restore may fail with a Client Read Timeout error before any data has been read from the NetBackup media. This error occurs because the SQL Server may need to pre-write the database files before the restore operation begins. The time that is required for this process is a function of certain factors: the size of the database files and the speed at which your host machine can write to disk. For example, consider that your system can perform disk writes at the rate of 60 megabytes per second and you have a 2.4 terabyte database. Then it takes at least 12 hours for SQL Server to prep the disk before the actual restore can begin. In reality, the delay may be even longer than what you calculate by as much as 20% to 40%.
The timeout problem can be resolved by increasing the NetBackup
setting. In the client host properties, change the properties of each client that contains a database that you may need to restore. The default for the setting is 300 seconds (5 minutes). If you have any clients which contain large SQL Server databases, you may need to set this value much higher.You can eliminate file initialization during SQL Server restores. See the following topic:
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