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Windows Server Forum / Exchange Server / Design / December 2006Design - Exchange Organization
I would like to know the key points that I need to consider while designing Exchange. We have at present around 500 users with around 125 heavy users. 250 light users and rest medium users. We would like to go in for BE/FE configuration. Also, the design should be able to support upgrading to Exchange 2007. Your input would be highly appreciated. Regards, Fazal-Ur Rehman, Shah >I would like to know the key points that I need to consider while >designing Exchange. We have at present around 500 users with around 125 [quoted text clipped - 4 lines] >Regards, >Fazal-Ur Rehman, Shah Key points? Storage. How much storage are you planning giving to the users. Are you thinking about an archiving solution as well, this would massively change your fast storage calculations. Storage. SAN or DAS, whose SAN? That alone gives you lots of options and permutations. Backup and more importantly, restores. What SLA will the business want/need? How business critical will Exchange become and how quickly (10 or 15 seconds after you install it?) BlackBerry (or I/O) are any of the users going to be CrackAddicts? That will push your I/O through the roof and introduce options for latency. That alone loops you back to storage. If you have 500 users on the box and some are BB users you must use Enterprise and spread the users across multiple store and more importantly multiple disk spindles. It's all about spindles! Connectivity. What protocols, what devices, what corporate security infrastructure is already there, what upgrades or modifications? Hell, I could go on forever but then you need to start paying £1,800 per day ;-) Hi Mark, Key Point you have to keep in mind is about the storage area. As you know for the Exchange server defragmentation 110% space of database size should be free. Another thing you have to keep in mind that as per user importance you assign different storage group so that if any storage group database got prob it will not affect whole users. > >I would like to know the key points that I need to consider while > >designing Exchange. We have at present around 500 users with around 125 [quoted text clipped - 24 lines] > Hell, I could go on forever but then you need to start paying £1,800 > per day ;-) It's not me asking the question. Whilst you're factually correct in that you need 110% free space to do an eseutil you're not correct in terms of business sense. You should never really need to do a defrag on a properly managed system and never ever if you're running Enterprise edition since you should never be in a position that gives you so much white space. Simply moving the mailboxes and deleting the store would be the most user-friendly solution. If you ever get the urge to run the defrag you will need to do it on a different area so bringing up a temporary LUN from the SAN would be the way to go. >Hi Mark, Key Point you have to keep in mind is about the storage area. >As you know for the Exchange server defragmentation 110% space of [quoted text clipped - 30 lines] >> Hell, I could go on forever but then you need to start paying £1,800 >> per day ;-) Hi Mark, I am sorry that by mistake I mentioned your name in my reply. But I am happy to see your response. I have one question Even I am moving the mailboxes its showing the same space and after moving all mailbox its showing the same size like previous store is showing. Even I told user to delete old mails then also the store size is same. I discussed with some administrator and the suggested me for the offline defragmentation. What you will suggest for this issue. > It's not me asking the question. Whilst you're factually correct in > that you need 110% free space to do an eseutil you're not correct in [quoted text clipped - 41 lines] > >> Hell, I could go on forever but then you need to start paying £1,800 > >> per day ;-) >Hi Mark, I am sorry that by mistake I mentioned your name in my reply. >But I am happy to see your response. I have one question Even I am [quoted text clipped - 3 lines] >discussed with some administrator and the suggested me for the offline >defragmentation. What you will suggest for this issue. The store size will never decrease until you do an offline defrag. You shouldn't need to do an offline defrag though because the users will just re-fill the store before it gets any bigger. Just make sure that you are getting event id 1221 messages in the early hours. If you have very restricted space on the physical disk then you need to think about getting more disk space. If you are convinced that your users won't be growing the store then there might be a case for the offline defrag. Hi Marks, Thanks for your assistance. One thing more I want to clarify that while doing offline defragmentation its making temporary file ic c: which I do not want. How I could change this location. Second thing after defragmentation also size is showing same. I have tested offline defragmentation on 10GB of store. > >Hi Mark, I am sorry that by mistake I mentioned your name in my reply. > >But I am happy to see your response. I have one question Even I am [quoted text clipped - 12 lines] > convinced that your users won't be growing the store then there might > be a case for the offline defrag. Hi, You direct the temporary defragmentation file to another disk using the /t switch to eseutil. - see http://support.microsoft.com/default.aspx?scid=kb;EN-US;192185 As Mark wrote look for events 1221. This event will tell you how much space can be gained by an offline defrag - and only run this is you are very low on diskspace. Leif > Hi Marks, Thanks for your assistance. One thing more I want to clarify > that while doing offline defragmentation its making temporary file ic [quoted text clipped - 18 lines] >> convinced that your users won't be growing the store then there might >> be a case for the offline defrag. Thanks Leif > Hi, > [quoted text clipped - 30 lines] > >> convinced that your users won't be growing the store then there might > >> be a case for the offline defrag. |
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