Option to select between differencing disk or dedicated disks for a VM Role
When a VM Role is deployed, automatically differencing disks are used. This created additional management lifecycle and performance challenges. The possibility to choose between differencing disk and dedicated disks would prevent a lot of challenges
Thank you for your votes! We’ve implemented this suggestion in the System Center VMM Update Roll-Up 5 (UR5) release supported by WAP and SPF UR5’s. Here’s a blog from Marc van Eijk, WAP MVP, where you can go for more information on how to use the feature (http://www.hyper-v.nu/archives/mvaneijk/2015/02/windows-azure-pack-vm-role-choose-between-differencing-disks-or-dedicated-disks/). Now that this item is completed, you all can now direct your votes to other suggestions in the forum.
Thanks again for interacting with us, your feedback is greatly appreciated!
Windows Azure Pack
Reggie Gibson commented
The ability to optionally set the VHD type for a VM role would be nice to have. This is a great workaround in the meantime by using SMA runbook to convert the disks post-provisioning:
James GIll commented
This was a really disappointing discovery. Had every intention of using VM roles but the use of differencing disks is not an option for us. The ability to use dedicated disks (fixed and dynamically expanding) would be a very welcome addition.
Michael Rüefli (drmiru) commented
I do like the idea of VM roles, but facing the same issues as my fellows. Differencing disks are not a "want to have" for traditional server workloads within an enterprise organisation.
Stanislav Zhelyazkov commented
VM Templates are not suitable replacement. With VM templates you cannot deploy application inside the VM. Service Templates will also not be suitable replacement as they are not flexible enough as VM roles. Also Service Templates do not fit into the Azure mode of having VM Roles and Cloud services. It will be really great if VM roles allows you to deploy VMs not only with differencing disks but with dedicated ones also. This is needed as the underlying storage will be different in many environments and that storage may not be suitable for differencing disks deployments.
Thank you for your feedback. As Daniel Neumann mentioned, using VMM VM Templates in WAP will work for some customers as an alternative solution to this gap.
Daniel Neumann commented
For a customer of mine this is a show-stopper for using the VM Role in WAP. The customer will use instead the VMM VM Templates in WAP.
Tim Day commented