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Other planning considerations
November 2004
Avaya Modular Messaging Concepts and
Planning Guide
13-19
! Maximum retention limit (B)
! Average retention time relative to retention limit (C)
The calculations for message retention estimate are:
! Average retention time for retained messages (D): [B x C]
! Average retention for all messages; includes 1 day cycle time for
daily messages not retained: [1 x A + D x (1-A)]
Table 13-8 provides an example for calculating the message retention
estimate.
Table 13-8. Message retention estimate calculation
Planning inputs Value
Percentage of daily messages retained 0.55 %
Maximum retention limit 20 days
Average retention time relative to retention limit 0.4 days
Calculation
Average retention time for retained messages [20 x 0.4]
8 days
Average retention for all messages
(includes 1 day cycle time for daily messages
not retained)
[1 x 0.55 + 8 x
(1-0.55)]
4.15 days