# Capacity of shared storage when the backup policy of the eBackup management data is hourly backup

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If the backup policy of the eBackup management data is set to Hourly Backup, capacity of shared storage for storing backup management data = [(Number of yearly backup copies + Number of monthly backup copies + Number of weekly backup copies + Number of daily backup copies + Number of hourly backup copies + 1) x 10 + 15] GB.
For example, when the default retention policy is used, the capacity of shared storage for storing backup management data = [(0 + 1 + 1 + 1 + 1 + 1) x 10 + 15] GB = 65 GB.
When Yearly Backup is set to Permanent, planned capacities depend on the number of years for saving backup copies. The capacity of shared storage for storing backup management data = [(Number of planned yearly backup copies + Number of monthly backup copies + Number of weekly backup copies + Number of daily backup copies + Number of hourly backup copies + 1) x 10 + 15] GB.

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Capacity of shared storage when the backup policy of the eBackup management data is daily backup
If the backup policy of the eBackup management data backup is set to Daily Backup, capacity of shared storage for storing backup management data = [(Number of yearly backup copies + Number of monthly backup copies + Number of weekly backup copies + Number of daily backup copies + 1) x 10 + 15] GB. For example, when the default retention policy is used, the capacity of shared storage for storing backup management data = [(0 + 1 + 1 + 1 + 1) x 10 + 15] GB = 55 GB. When Yearly Backup is set to Permanent, planned capacities depend on the number of years for saving backup copies. The capacity of shared storage for storing backup management data = [(Number of planned yearly backup copies + Number of monthly backup copies + Number of weekly backup copies + Number of daily backup copies+ 1) x 10 + 15] GB.

Backup periods of the eBackup management data
The system management data can be automatically backed up according to a certain backup policy. You can also modify the backup policy according to the actual situation. The backup periods are as follows: Hourly Backup, Daily Backup, Weekly Backup, Monthly Backup, and Yearly Backup. Users can also manually back up the system database immediately (The data manually backed up cannot be automatically deleted.).

Processing policies of the system when the folder that stores the backup data of eBackup management data has the same name as another folder
If the name of the folder that stores backup data of eBackup management data is the same as another folder, the system has two processing policies: 1. Add the backup data of the management data to the folder with the same name. 2. If a folder with the same name exists, the storage configuration of the management data backup fails. In this case, change the file name until the file name is unique. Select an application type based on onsite requirements.

Failure to access the eBackup storage plane
Security of the eBackup has been hardened. By default, only those external systems which are in the same network segments as the eBackup network planes can access eBackup servers. Therefore, you need to configure other network segments or IP addresses that need to be connected to the storage plane (including the production storage plane and the backup storage plane). Configure routes and firewalls in sequence.

Backup storage
As a global concept, backup storage refers to the back-end storage space for use by the eBackup backup management system, which consists of storage units, storage pools, and repositories.

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