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32 or 64 bit Linux OS

Posted on 2008-06-20
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Last Modified: 2010-04-21
I have a server that I'm due to install CentOS on, along with VMware Server to host 32-bit operating systems. Is it worth having the Linux install 32 or 64 bit, or doesn't it matter? Are there any extra performance improvements I'd gain by using 64-bit?

The server spec is as follows:

Dell PowerEdge SC430
Pentium D 2.8GHz
1GB 533MHz RAM (2GB upgrade this weekend)
250GB SATA HDD

The Dell website doesn't feature any chipset or graphics drivers for this server for the Linux OS, so I'm assuming Linux has native drivers built in?!

Thanks in advance.
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Question by:DReade83
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agriesser earned 2000 total points
ID: 21833209
If you don't need to have more than 4GB of memory in this machine, I wouldn't go for 64bit on the host. Especially if the guest operating systems you want to install are 32bit too.
Besides that, VMware Server 1.0x has only experimental support for 64bit host operating systems, whereas VMware Server 2.0 beta comes with full 64bit support at the host level.

For production purposes, I'd currently stick with VMware Server 1 and as 64bit support is experimental there (whatever that means in terms of stability), I'd stick with 32bit at the host.

As mentioned in my answer to your other question: Don't worry about the chipset and graphics drivers of CentOS, it will run fine usually.
The only thing that might not work out of the box is the S-ATA controller, but give it a try and if it really doesn't work as expected, come back here and we'll get that going :)
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by:DReade83
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Once again, thanks mate! Very much appreciated. :-)
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