All logs are the same size on the production server and the recovery server. The log size affects the amount of data that Assure MIMIX for AIX processes for each transaction.
Assure MIMIX for AIX processing is reduced.
Elimination of common blocks in the undo logs is more efficient.
Decreasing log size results in a more up-to-date replica on the recovery server because log transfers occur more frequently.
The production journal should contain at least 8 logs.
Minimum log size is 2 MB.
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Maximum log size is one-half of the available RAM on the recovery server.
To calculate log size, you need the following information:
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Estimate of average write throughput
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Required processing rate. For example, if Assure MIMIX for AIX processes one log every 60 seconds, the recovery server will be one minute behind the production server.
Calculate log size as follows:
log size = (average write throughput)/(processing rate)
Calculate the number of logs as follows:
number of logs = (journal size)/(log size)