Windows Server 2k8 32 or 64 bits

Posted on 2011-05-10
Last Modified: 2012-05-11
Hello Experts!

People use to say that if you are going to use less than 4gb, you would go a Win7 32 bits. If more than this, 64 bits, obviously because of the memory limits.
My question is about the server. I am about to install a new server to test Backup Exec (believe me or not, we were using a Pentium 3 with 1GB ram).
I am not planning to use more than 4GB for RAM becase as you could see, 1GB was supporting the backup. I have both licenses (32 and 64 bits), so I was wondering if a 32 bits would be enough or even improve perfomance because of the RAM assigned.
It´s virtualized server, so assigning more vCPUs or RAM will improve Data Transfer?
Question by:ExileD-GoD
    LVL 95

    Expert Comment

    by:Lee W, MVP
    A Pentium III is 32 bit only.  There are no 64 bit Pentium III systems.  You can only use x86 versions (32 bit) of Windows on that system

    Author Comment

    Ahh sorry I forgot to say that I am not using the same hardware.
    Like I told, it´s a VM... The host is a HP DL 380 G5 (ESX Server)
    LVL 2

    Expert Comment

    I'm not sure if knowing whether the VM Host is running HyperV or VMware or Xen makes a difference, but I would go with 64 bits unless you plan to use principally 32-bit applications. 32-bit only server software will likely soon have 64-bit versions anyway.
    LVL 59

    Accepted Solution

    32-bit will be fine to run the backup software. You can run 64-bit though this is a better performance gainer because of the read and writeablility of the version. I would always go with 64-bit even though you aren't using more then 4Gb of RAM.

    Author Closing Comment

    Well I was looking for a reason to use 64 instead of 32 and dariusg gave one (better performance beucase of the rede and writeablility.
    It was not a full or detailed information and there is no link o documentation speaking about that so I am giving a B.

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