Another step for configuring your Cloud Server is choosing the Hypervisor
: this choice is fundamental as it will not be possible to change it in the future.
The Hypervisor is a virtual machine manager, it is therefore the main component of a system based on the virtualisation
The choice of the Hypervisor affects the availability or not of some Operating Systems
and their different versions: therefore, it is advisable to check the operating systems available for every Hypervisor offered.
Another parameter for choosing the Hypervisor, if you already use virtual machines locally, is being able to import virtual machine images: it is necessary to maintain the Hypervisor already used locally, since it is not possible to use images created with different Hypervisors.
The Hypervisors offered by Aruba Cloud Computing are:
Low Cost Hyper-V
By choosing VMware as a Hypervisor offers some more functions in respect of a Hyper-V such as the possibility of using the VMware vSphere Client software to manage all your VMware Cloud Servers simultaneously; or the option of creating a Snapshot
of your Cloud Server if you need to create a temporary restore point.
The Hyper-V Hypervisor in the normal version, and in the Low Cost version are completely identical both for the virtualization system and for the functionality.
The Low Cost Hyper-V differs from the Hyper-V for its cost, for its fewer storage performances and above all for the resources dedicated to the CPU which are not guaranteed. However, like in the normal version of Hyper-V, the resources dedicated to the RAM are guaranteed, the hardware substrate is redundant and replicated in synchronous mode.
In spite of the small differences between the two versions of Hyper-V, the cost of the Low Cost version is lower than the normal version (therefore offering less guarantees), and that is why we advise you to choose the Low Cost Hyper-V Hypervisors where it is preferable to use multiple Cloud Servers instead of one single more powerful virtual machine: this is the case of load balancers, firewalls, backup servers. The Low Cost offer of Hyper-V is especially favourable if you wish to create test Cloud Servers, to try out the features, to carry out trials or to use it as a laboratory for any type of installation or application test that is not mission critical. Even though the resources for the CPU are not guaranteed, it is still preferable to opt for the Low Cost Hyper-V Hypervisor, when you need to subdivide the computational load on several virtual machines, like for example for those who need to perform 3D rendering and/or animations.
To sum up:
* the maximum quantity of CPU which can be configured for the Windows templates with MSSQL is 4 CPU.