Computer Associates BABWBR1151S38 Implementation Guide - Page 27

Storage Capacity Requirements Backup Data Storage Requirements You need to reserve online storage space for scheduled backup operations. To calculate the amount of space required 1. Estimate the size of an average, full backup. 2. Add the average, percent growth of the data set during a typical, full backup cycle. 3. Add the estimated size of an average incremental backup. 4. Add the average percent growth of the data set during a typical, incremental backup cycle. Global Dashboard Data Storage Requirements In a Global Dashboard environment, the collected dashboard data (CA ARCserve Backup data and SRM-related data) from each registered Branch Primary Server is synchronized to the configured Central Primary Server, where it is stored in the central CA ARCserve Backup database (ASDB). As a result, when selecting the Central Primary Server, the main consideration should be database size. Make sure the selected Central Primary Server is capable of storing dashboard data received from all registered Branch Primary Servers. Note: For a Branch Primary Server, no additional hardware or software is required beyond the minimum requirements for any CA ARCserve Backup primary server or stand-alone server. To calculate the approximate amount of space required for the central ASDB in your Global Dashboard environment, consider the following: ■ As each branch site uploads data to the central ASDB on a daily basis, it is estimated that the central ASDB will grow by approximately 4 MB for every 100 nodes (assuming 4 volumes in each node) every day (or 1MB for every 100 sessions every day). ■ The number of sessions is calculated by multiplying the number of nodes by the average number of volumes in a node. The number of days of database retention time is determined by the branch CA ARCserve Backup setup. Chapter 2: Planning Storage Environments 27