What is the main difference beetwen ESXi 3.5 and 4?

piotrmikula108 used Ask the Experts™
Is 3.5 still a good platform to deploy or should I move to v4? I'm building a single VMserver to host SBS2008 Premium to separate the main installation from the SQL so they run on two separate machines, so nothing fancy.

I was trying to download ESXi 3.5 update 3 or 4 but it didn't have much luck, anybody has a direct link?

Thank you so much
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I believe the big one is that ESX 4 is a 64 bit application where ESX 3.5 is 32 bit, so in ESX 4 you can have both 64 and 32 bit guests.

Here is a list of some features to look at that lack from ESX 3.5:
1. Host profiles
2. Host Update Utility
3. Fault Tolerance
4. GUI Storage VMotion
5. vDistributed Network Switches and Cisco Nexus 1000v integration
6. vShield Zone
7. Hot pluggable (remove devices while VM's online)
8. Double resources support (ram, memory, etcc.)
9. Support cloud solution & x64 bit architecture & seperate SC VM (VMDK)
Top Expert 2009
You should be looking at http://www.vmware.com/support/vsphere4/doc/vsp_40_new_feat.html
Basically, esx4 has everything esx3.5 has to offer plus many new features and extra config max http://www.vmware.com/pdf/vsphere4/r40/vsp_40_config_max.pdf
Michael WorshamCloud/Infrastructure Solutions Architect
If your CPU hardware supports it (i.e. 64-Bit CPU w/ CPU Execution mode: Intel VT-x or AMD-V), then I would opt for the ESXi v4.0 release.

VMware ESXi 3.5 Update 4 Product License and Download
i would also say thin provisioning!

Great feature that saves ALOT of money and troubles

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