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taylormade
Contributor
Contributor

Please help me understand how ESX works

Nubie here...

Can someone explain to me whether ESX is the actual OS (do I use an install disk and replace my Windows OS for example...or is ESX an appliance that will run on a Windows server?

I downloaded a 60 day demo ISO and tried to boot from it, but it brought up a LINUX OS line but never went any further.

Please help me understand..

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Troy_Clavell
Immortal
Immortal

ESX is the OS.... which is based off of Red Hat

Take Wiki with a grain of salt, but this may be helpful

http://en.wikipedia.org/wiki/VMware_ESX_Server

mcowger
Immortal
Immortal

Troy is right - it IS the OS, and once you install it (using the disk, which borrows a Linux install mechanism) you will have wiped your server and dedicated it to running ESX.






--Matt

--Matt VCDX #52 blog.cowger.us
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atbnet
Expert
Expert

ESX itself is the operating system, it runs on the bare metal. You boot off the ESX disk and it will go into a familiar linux installer to install the ESX OS.

The OS runs the vmkernel not red hat (linux kernel) as people think. The red hat OS that people think is ESX is actually the service console which is a customised red hat VM running on all ESX servers.

Andy, VMware Certified Professional (VCP),

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Andy Barnes
VCP / VCA-DT / MCITP:EA / CCIA
Help, Guides and How Tos... www.VMadmin.co.uk

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RParker
Immortal
Immortal

ESX is the OS.... which is based off of Red Hat

Take Wiki with a grain of salt, but this may be helpful

Actually it's NOT based off of red hat, the CONSOLE is a redhat 3 U9 version and boot loader,but ESX is a proprietary system that the kernel bootstraps from, but the kernel is NOT redhat.

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Troy_Clavell
Immortal
Immortal

Actually it's NOT based off of red hat, the CONSOLE is a redhat 3 U9 version and boot loader,but ESX is a proprietary system that the kernel bootstraps from, but the kernel is NOT redhat.

agreed... just trying to help the OP out.

Thanks for the detailed information, it probably helped the OP out as well.

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atbnet
Expert
Expert

Indeed mate, already said. If ESX was based on red hat the code for ESX would have to be released because it would be based on gpl open source code! And I cant see vmware making that mistake.

Andy, VMware Certified Professional (VCP),

If you found this information useful please award points using the buttons at the top of the page accordingly.

Andy Barnes
VCP / VCA-DT / MCITP:EA / CCIA
Help, Guides and How Tos... www.VMadmin.co.uk

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Texiwill
Leadership
Leadership

Hello,

The installation of VMware ESX v2.x and v3.x is based on RedHat Linux specifically anaconda. So during install it looks and acts quite a bit like the existing RHEL installers.

However once you boot ESX you boot into the vmkernel (proprietary hypervisor) which in turn creates a VM into which it boots the RHEL kernel for the management applaince we refer to as the Service Console.

VMware ESXi however works differently, the install is from VMware and the only kernel booted is the vmkernel.


Best regards,

Edward L. Haletky

VMware Communities User Moderator

====

Author of the book 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education.

SearchVMware Blog: http://itknowledgeexchange.techtarget.com/virtualization-pro/

Blue Gears Blogs - http://www.itworld.com/ and http://www.networkworld.com/community/haletky

As well as the Virtualization Wiki at http://www.astroarch.com/wiki/index.php/Virtualization

--
Edward L. Haletky
vExpert XIV: 2009-2023,
VMTN Community Moderator
vSphere Upgrade Saga: https://www.astroarch.com/blogs
GitHub Repo: https://github.com/Texiwill
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