IBM E16RMLL-I Implementation Guide - Page 55
Number of image backups, Image backup frequency, Number of backup sets, Backup set frequency, Policy
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2.2.20 Number of image backups Identify the number of eligible system images that you want to back up. For a workstation that does not change very frequently, a good number could be six to twelve per machine. 2.2.21 Image backup frequency Identify how often you want to perform image backups. A good standard will be on a monthly basis for less critical and static machines, with more frequent backups for more critical and dynamic machines. 2.2.22 Number of backup sets Determine the number of backup sets that you want to create. This number must be balanced against your full recovery time and the change rate for data. Consider a more frequent backup set for large file systems. 2.2.23 Backup set frequency Determine how often you will need to generate a backup set. Although a backup set is made of client data, it is a server-initiated process that requires some scratch tapes in the automated library or some guidelines for the operations team to run. 2.2.24 Policy domain Leave this field blank. During the planning phase, this is unknown. We used this field in 1.2.1, "Server implementation checklist" on page 8, to contain the policy domain chosen for this client. For example, if you are implementing our configuration, the policy domains would be SERVER or WORKSTN. For more information about policy domains see Chapter 7, "Data storage policies" on page 269. 2.2.25 Client option set Leave this field blank. During the planning phase, this is unknown. We used this field in 1.2.2, "Client implementation checklist" on page 11, to contain the client option set chosen for this client. For example, if you are implementing our configuration, the client options set names would be AIX, WINDOWS, or NETWARE. Chapter 2. Implementation planning 25
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