2 Replies Latest reply: Jan 13, 2012 6:14 AM by Paul Galjan RSS

Some thoughts on Exchange Log LUN size design

LouisLu

I encountered some LUN size issue runnning Exchange sizing. Hypothetic workable formula Log LUN size = (logs per day, per mailbox)*(number of mailboxes per database)*(protection buffer from log truncation failure, in days)*(free space requirement factor). The third parameter (protection buffer from log truncation failure, in days) triggers my interets on the value. The sample from WP presents 3 as usual option. But from Microsoft Calc side, the value set is varied from Backup Frequency option(Daily Differential/Daily Incremental).

 

I have not much experience on Exchange Backup operation. Shall we have any best practice on the parameter (protection buffer from log truncation failure, in days) or in other word which backup methodology adopted according to specific scenario? Because it is effecting a lot on Log LUN size design.