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Thread: [SOLVED] If my server has 4GB memory, how many users can support?

  1. #1
    Wilson_Lee is offline Active Member
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    Default [SOLVED] If my server has 4GB memory, how many users can support?

    Hi,

    May I know how many users can support if my server has 4GB memory, Quad Core Processor, 143GB hdd with RAID1?

    Thanks.

    regards,
    wilson
    Last edited by Wilson_Lee; 07-30-2008 at 01:06 AM.

  2. #2
    uxbod's Avatar
    uxbod is offline Moderator
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    You may wish to have a read of this thread :- Zimbra Server Sizing

    We would need to understand your users profiles aswell due to everybodies needs being different.

  3. #3
    Wilson_Lee is offline Active Member
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    Thanks.
    Fyi, total users that I will have is below 100 email users. They will use POP, IMAP and web to access email and seding email.

    I plan to deploy FOSS with RHEL 5 64 bit .

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    uxbod's Avatar
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    The one thing I would consider is splitting your O/S and ZCS installation onto separate disks so that you do not end up with a I/O bottleneck. Also have a read of Performance Tuning Guidelines for Large Deployments - Zimbra :: Wiki as there is some very useful with respect to sizing, and how you can tweak O/S parameters etc for optimal performance.

  5. #5
    Wilson_Lee is offline Active Member
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    As my system only need to support 55-60 users only. Do i really need to check on performance tunning before install the server?My users only need to do email, calander sharing, invite attendees for meeting.

    With my hardare specs, I check the system requirement for Zimbra, it already meets the requirement for Production Environment.

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    uxbod's Avatar
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    Yes you should be fine. Even though the Wiki article is titled Performance Tuning it does cover some best practice for hardware/OS setup etc so is worth a read IMHO Any problems just give us a shout

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    Wilson_Lee is offline Active Member
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    So with 4GB memory , it definately can support 50-60 users for my environment?



    Thanks man...now working to propose Zimbra to my company.

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    uxbod's Avatar
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    Are you looking at the FOSS or NE version of ZCS ? As mentioned in my first post we would need to fully understand your users profiles eg. Web Client or Thick Client, IMAP/POP3. How many emails are going to be sent/received ? Are you going to apply quotas to mailboxes ? If you can provide further details then that will allow us to give a clear thumbs up or thumbs down.

    Also, if you are going to be looking at the NE version then why not also run it past the Zimbra Sales Team

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    Wilson_Lee is offline Active Member
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    We are looking at FOSS now. We will continue to use MS.outlook and thunderbird as our mail client for Imap/POP3. Plan to apply set quota 500MB for every mailbox but as almost all the users are using POP3, I do not worry about hard disk space issue. how many emails are going to be sent/received still not sure. As I know, it will not an issue as i do not have a lot of users.
    Last edited by Wilson_Lee; 07-30-2008 at 01:40 AM.

  10. #10
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    jholder is offline Former Zimbran
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    The real question is 64-bit or 32. You said 32 bit. It's a big misconception that 4GB on 32 bit=4 GB on 64 bit. That's not true. It's more like 4GB on 32 bit = 2 GB on 64 bit?

    Why? The bits are larger, therefore they require more memory

    But with that said, you should be okay 32 or 64 bit(I like 32 bit myself).

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