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Creating a repurposed copy originates with the creation of a first-generation copy. With PowerStore, this can be a snapshot or thin clone. When the first-generation copy is created, any number of second-generation copies can be created as thin clones. The initialization wizard provides the option to create a second-generation copy simultaneously to when the first-generation copy is created. This is for convenience and does not require the creation of the second-generation copy when the first-generation copy is created.
The steps in the following section outline how to create an initial first-generation copy and create a second-generation copy. This process clarifies how you can create multiple second-generation copies when a first-generation copy exists.
The initial wizard enables creating only one second-generation copy, but there may be cases when many additional second-generation copies are required. The process for creating multiple second-generation copies is as follows.
The following two sections depict options encountered when repurposing a specific type of application. See the AppSync User and Administration Guide for more details about each application’s copy options.
The default copy type should be changed from Full to Copy because the repurposing wizard is being performed on a SQL Server database, for which there is already a protection service plan. Repurposing copies are not used for protection purposes, and no two workflows should use a SQL Server full copy type, since a full backup alters the transaction log sequence numbers, and disrupts a restore operation taken from another workflow process.
See the SQL Server section of the AppSync User and Administration Guide for more details about SQL Server settings and other application types being repurposed such as Oracle. Figure 15 shows the different options for the SQL Server backup type.
There are a limited number of options when repurposing file systems, as compared to repurposing SQL Server or Oracle databases. File system repurposing workflows require a label to be configured, unlike other types of workflows where a default label exits. Figure 16 shows the different options available when configuring file system repurposing workflows.
There are other settings which can be configured for first-generation copies only. These are described as follows:
The Storage Preferences settings are for managing storage configuration options. These settings are not discussed in this white paper. See the AppSync User and Administration Guide for more details.
The Advanced Settings only apply to Windows environments, and these settings are not available when repurposing Oracle databases. The configuration options shown, once clicked, enable retrying the Microsoft Volume Shadow Copy service (VSS), if a timeout occurs. The default setting is to retry three times, but this can be extended and an additional amount of time between each retry can be configured.
When the copy settings are configured, click Next and Next to configure the Scripts and Schedule/Run settings. To complete the wizard, click Next and Finish to initiate the creation of the first-generation copy.