Master-Delta Chain Configuration
[This is an advanced feature. Administrators should not adjust any of these settings unless they are very familiar with the DS-Client data activity patterns on the DS-System.]
This feature allows the DS-System to be configured with specific master-delta chain reconstruction settings for each different backup set type. These changes can be applied at the Customer or DS-Client level.
The Delta Chain Configuration screen is dedicated to configuring when the DS-System reconstructs masters in a master-delta chain. This task must then be scheduled (see "Schedules (DS-System Tasks)") to run periodically (e.g. once daily) on the DS-System.
For further examples, see the Knowledge Base article "Configuring Different Master-Delta Chain Lengths".
1. Setup menu > Delta Chain Configuration.
- F1 Help: See "Delta Chain Configuration".
- There is a global default maximum delta chain length. By default, all backup sets will be assigned the global maximum chain length ("Default delta chain length" at the bottom of the screen).
- Next, the customer level Configurations will apply to all the customer's DS-Clients. All applicable backup sets will have their maximum chain length overridden with customer's Configuration (if applicable).
- Finally, the DS-Client level Configurations will override the maximum chain length for backup sets defined in the Delta Chain Configuration.
- You can create and maintain multiple Configurations from this screen.
- Configurations are applied per DS-Client. They can be applied at the Customer level, but if a customer's DS-Client is assigned to a different configuration, the DS-Client level assignment will override the customer level assignment.
- Each configuration that is created can be used in any way required by DS-System administrators.
- A configuration can be specific, for a specific backup set type (e.g. File System). A configuration can be more general, for a group of similar data types like databases (e.g. MS Exchange Server, MS SQL Server). A configuration can also cover every backup set type and be assigned to one or several customers (or DS-Clients).
2. To add or edit a Configuration to the list, click "New" or "Modify" in the Configuration section.
- F1 Help: See "New / Modify Delta Chain Configuration".
- Enter a name for this Delta Chain Configuration setting and click OK.
- You can create as many configurations as required.
3. Once a Configuration is created, you can add Details. Each detail will override the DS-System's default delta chain length for the specified backup set type.
4. To add or edit a Configuration's Detail, click "New" or "Modify" in the Configuration Detail section.
- F1 Help: See "New / Modify Delta Chain Detail".
5. Continue with Step 4 until the Configuration contains all the Details required. When you are finished, you can assign this Configuration to Customers or DS-Clients.
6. Customer level assignment: Click "Assign" in the "Customers assigned to this delta chain configuration" section.
- F1 Help: See "Assign Customer to delta chain configuration [...]".
7. DS-Client level assignment: Click "Assign" in the "DS-Clients assigned to this delta chain configuration" section.
- F1 Help: See "Assign DS-Client to delta chain configuration [...]".
8. Once you have created at least one Delta Chain Configuration, you can schedule the DS-System to run the optimization task (see "Scheduled Delta Chain Optimization").
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