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Reference Architecture Guide—Consolidate and Simplify Mixed SQL Server and Oracle 18c Database Workloads
Data Domain Backup and Recovery Solution
Introduction Backup and recovery solution for Oracle Backup and recovery solution for SQL Server Storage and file system Mtree and storage unit IP network design RMAN backup and restore parameters Test methodology and results Use Case 1: First full backup of standalone OLTP database Use Case 2: Second full backup of the standalone OLTP database Use Case 3: Restore and recovery of the OLTP database from full backup

Data Domain Backup and Recovery Solution

Storage and file system

  • The Data Domain system includes a set of disks for storing database backups. During the initial Data Domain configuration, we assigned these disks to disk groups so that they can be used to create file systems for storing database backups.

    The Data Domain DD9300 system used in our testing has one head unit with 12 disks, and four disk enclosures (DS60) with 60 disks each. In the head unit, four disks are used as the system disks and eight disks are used as cache tier. From the four disk enclosures, we created 15 disk groups, each with 14 disks plus one spare disk. Each disk group has a 38.21 TiB usable storage capacity. All 15 disk groups provide a total of 573.15 TiB usable physical storage capacity that can be used to store the database backup images.

    During the Data Domain system initialization process, we enabled the file system by running a file-system-enabling command on the Data Domain system command line. The following command shows an example of the space usage of the file system in a DD9300.

    Figure 14.     Example of space usage of file system in DD9300

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Mtree and storage unit