After my previous post on the XenServer 4 Mini-Product training , I have received some questions on the differences between XenEnterprise v3 and XenServer Enterprise v4.
Here is some background info on the differences between XenEnterprise v3 and XenServer Enterprise v4.
What New In Citrix XenServer v4?
Seamlessly move virtual machines between servers without downtime.
Unified virtualization management interface, including server, storage, and networking.
Native 64 bit Hypervisor
Scalability and support for enterprise applications
Efficient configuration, allocation, and authentication for virtualization resources.
Integration with existing management investments, infrastructure and processes.
Here is some background on upgrading to XenServer Enterprise v4 – Upgrading to Citrix XenServer v4
I upgrade from your 3.2 products to your 4.0 product?
Yes, you can upgrade a 3.2 system to 4.0. Simply insert the 4.0 installation CD in your system and boot. When you run the installation process, it will discover your existing 3.2 installation and ask if you want to upgrade it.
Can I upgrade from your 3.1 products to your 4.0 product?
Yes, you can upgrade a 3.1 system to 4.0, but not directly. First you must upgrade your 3.1 system to the latest 3.x release, which is version 3.2. Insert the 3.2 installation CD in your system and boot. When you run the installation process for 3.2, it will discover your existing 3.1 installation and ask if you want to upgrade it. Once your system has been upgraded to 3.2, you can upgrade to the 4.0 release following the instructions in the 3.2 to 4.0 upgrade process.
Can I upgrade from your 3.0 product right to 4.0?
No, you will need to move your 3.0 virtual machines over to a 3.1 system. Once you are on the 3.1 version, you can upgrade the same system to 3.2, leaving your virtual machines and their settings intact. You can then upgrade from 3.2 to the 4.0 release.
Can the XenCenter client connect to XenSource 3.x servers?
No, the XenCenter client cannot connect to older XenSource 3.x servers.
Moving Between XenServer v4 Editions –
Moving Between XenServer v4 Products
Is there an upgrade path from XenExpress to XenServer?
Yes, you can take an existing XenExpress install and simply add a new license key which turns that instance into a XenServer instance.
Is there an upgrade path from XenExpress to XenEnterprise?
Yes, you can take an existing XenExpress install and simply add a new license key which turns that instance into a XenEnterprise instance.
Is there an upgrade path from XenServer to XenEnterprise?
Yes, you can take an existing XenServer install and simply add a new license key which turns that instance into a XenEnterprise instance.
Can virtual machines exported from XenExpress, XenServer, or XenEnterprise be moved between the product offerings?
Yes, virtual machines from any of our three commercial products are compatible with each other.
Here is a link to a recorded webinar by Peter Blum that covers the new features in XenServer v4.
Finally, here is some info on how to convert existing virtual machine built with a different hypervisor to a Xen virtual machine.
VM Conversion from other hypervisors and virtual machine monitors
Can you convert a virtual machine from other virtualization products to your products?
Yes, XenSource provides a free VM conversion tool that allows you to convert existing VMWare and Microsoft VMs to the XenSource import format. You can download the VM conversion tool from the link below.
You can also use products from Leostream and Platespin to convert other vendor virtual machines to be usable on a XenSource server.
Can you convert a virtual machine from Open Source Xen to your products?
There is currently no automated mechanism to move VMs from open source Xen to the XenSource commercial products. In a future release the OVA (open virtual appliance) format will allow VMs to be moved between different Xen environments.