@27541 However, if you're "journaling" emails -- capturing and archiving copies of email the moment each message arrives at the email server -- then yes, you're going to utilize much more bandwidth because data is being moved across the network almost continuously. Usually, users will choose this approach for regulatory or litigation purposes.
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Predicting the impact of bandwidth on email archiving can be challenging. It requires substantial performance data collection and evaluation in order to understand archiving bandwidth needs. For example, an IT or email manager needs to look at the number of mailboxes per email server, the traffic per employee or mailbox in terms of message frequency and size over time to estimate bandwidth needs. Then, compare bandwidth estimates against the current bandwidth baseline to help decide whether to journal or batch the archive process (and if network upgrades are needed).
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