Comments on: Technical Reasons Not To Upgrade to vSphere Immediately: Product Compatibility

By: Dracolith

Dracolith — Thu, 25 Jun 2009 00:39:41 +0000

New technical reason: In ESX3i, free version, foundation, and standard you can hot-add virtual disks and increase their size no license requirement.

In vSphere ESXi4 it doesn't work. You need an advanced license for all hot add operations, even just adding a VMDK.

Tried it in the free version, verified it doesn't work. The VMware comparison chart for vSphere features lists it as an "Advanced" feature.

By: Dracolith

Dracolith — Wed, 24 Jun 2009 18:39:41 +0000

New technical reason: In ESXi, free version you can hot-add virtual disks and increase their size no license requirement.

In vSphere it doesn't work. You need an advanced license.

By: rbrambley

rbrambley — Tue, 23 Jun 2009 01:10:43 +0000

Carlo, Dracolith,

Thanks for adding a few other, equally important reasons.

By: Dracolith

Dracolith — Fri, 19 Jun 2009 00:34:27 +0000

I think the biggest technical reason of all is ESX 4 has basically a rewritten kernel,
it's a major change, and many enterprises will want to thoroughly test it under
conditions similar to the production load, to ensure it's actually stable, and won't
present unknown issues.

Of course there are non-technical reasons also, like the VMware admins aren't familiar with or trained on how to manage the new version yet, people need to adapt to and understand the differences, some organizations will want their admins trained on it before making a plan to move their production servers to the new version.

By: ccostan

ccostan — Thu, 18 Jun 2009 13:27:54 +0000

Rich,

Another technical reason that I have been running into is Ranger Pro. Clients that have become very heavily invested in using VizionCore's RangerPro for their virtual backup strategy are now stuck in the lurch with RangerDPP still only in BETA and the old RangerPro not compatible with vSphere.

This has also made them begin to start looking at Veeam as an alternative which already has vSphere support.

CARLO.