This is just totaly exciting!!!!!!!!! I am now officially caught up with all my Q&A Logs for the series as of right now. Here is the Q&A Log from Part 22 (Toolbox) from the 24 Part Exchange 2007 Webcast series. This has got to be the smallest log for the entire Webcasts series (not counting the Labcasts). I don't know if this is good or bad, but either way, here it is. Please let me know if you have any other questions.

Harold Wong

harold.wong@microsoft.com

**Exchange Server 2007 Webcast Series (Part 22 of 24) Questions and Answers Log (04-06-07)**

**Question:** I have 400 1GB heavy mailboxes, if I want to install the mailbox on the SCC together LUN, how much space size should I reserve for the LOG LUN roughly?

**Answer: **There are sizing guidelines available to assist with this: http://technet.microsoft.com/en-us/library/bb124518.aspx. However, I will also say that this will largely depend on the amount of traffic that flows in and how often you perform a full backup. The Logs don't necessarily correlate with the size of the mailboxes, but with traffic flow.

**Question:** the mailbox will get/rece at least 5mb emails per day and backup will be full only on the weekend.

**Answer: **If you do the simple math on this, that is 5MB of logs per mailbox per day * 7 days = 35 MB. Multiply this by 400 and you get 14 GB. Remember though, this is the "simple" math so it will probably be more.

**Question:** Is there a performance impact when running the BPA?

**Answer: **you would want to run it at a lower peak time. Don't leave it running. I am not sure of the exact perf impact.

**Question:** run it before load exchange 2007?

**Answer: **Yes, on your Exchange 2003 box if you moving from Exchange 2003, it will make sure you are ready to install Exchange 2007.

**Question:** Can the Analyzer run against Exchange 2003

**Answer: **Yes, absolutely!