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VMware vSAN consolidates directly connected data storage devices into a single storage pool which all hosts in the vSAN cluster use together. vSAN makes external shared storage superfluous and simplifies the storage configuration and provisioning of virtual machines. Every host in a vSAN cluster can add storage to the cluster. These storage devices combine to form a single vSAN data storage.
Hyper-convergence is an IT framework that combines storage, computers, and networks into a single system in order to reduce data centre complexity and boost scalability.
Hyper-convergent infrastructures (HCI) contain a hypervisor for virtual computing, software-defined storage, and a virtualised network and typically run on standard off-the-peg servers. More nodes can be combined into pools for joint computing and storage resources that are designed for easy use.
The use of standard hardware supported by a single provider leads to an infrastructure that’s more flexible and easier to manage than traditional enterprise storage infrastructures.
For IT managers who work on data centre modernisation projects, HCI can offer the agility of a public cloud without having to surrender control of the hardware on your own site.
VMware vSAN is a software-defined HCI solution that’s integrated into the hypervisor kernel and designed for all kinds of powerful, virtualised, and business-critical applications.
Five reasons to choose VMware vSAN-based HCI.
vSAN offers an outstanding storage solution with integrated security, simple administration, high performance, and low costs. vSAN consolidates local storage devices to create distributed and partitioned data storage and provide software-defined storage that’s optimised for virtual machines.
vSAN is the only native vSphere storage that can be expanded seamlessly and without additional software.
Storage provisioning and management is easily configured, optimised, and controlled with policies via the central management interface.
vSAN can drastically reduce your costs as a result of hardware selection, server efficiency in terms of storage arrays and affordable flash storage. Admin work becomes easier with less work and intelligent automation that can be managed via a tool and a holistic team. And you’ll be able to react more quickly and intelligently to business requirements. New, enhanced stretched clusters offer protection across multiple locations for significantly lower costs than traditional solutions.
By adding disks to existing nodes or adding multiple nodes into the cluster, a vSAN solution can grow very easily and simply. In combination with NSX, local storage and admin services can be simplified with many different public clouds, ensuring a consistent user experience.
Customers from all industries and sizes rely on vSAN to operate their most important applications such as Microsoft SQL Server, SAP and Oracle Database.
Using Cache Drives with solid state disks and the option of all-flash configuration makes low latencies and performance that meet the requirements of virtually all applications possible. This means up to 100k IOPS per host with latencies under 1ms.
Using between 3 and 64 hosts and the option to use multiple disk groups per host means there is no single point of failure. Policies allow a different service level to be defined for each object and ensure than that can be increased where necessary, allowing for an availability of up to 99.9999%.
VMware vSAN enables simple 3-node clusters be realised for operation of a mixed environment as well as highly-available, specialised clusters with up to 64 nodes for dedicated use.
vSAN Stretched Cluster with Local Failure Protection
The stretched-cluster function offers the option to make all resources across two locations redundant. In a stretched cluster configuration, both data locations are active and if one of the locations fails, vSAN uses the storage of the other location. vSphere HA then starts the failed VMs afresh in the remaining location.
vSAN Remote Office / Branch Office (ROBO)
Another option with vSAN is to provision a 2-host architecture for remote office implementations. A 2-node architecture consists of two physical vSphere hosts in a cluster in the same building that vSAN is run in. The two physical hosts can be connected via a switch or directly with a crossover cable.
vSAN licence editions include Standard, Advanced, and Enterprise. Additionally, there are licences for vSAN for ROBO and vSAN for VDI—both come in Standard, Advanced and Enterprise Editions. Functionally, the ROBO and VDI licence models work the same as the standard model, but licensing takes place according to other criteria.
vSAN for ROBO licences is calculated per virtual machine and sold in packs of 25. This approach provides high flexibility in provisioning and helps minimise the costs for smaller infrastructures that would normally be found in branches.
“vSAN for Desktop” licensing is available for customers that use vSAN exclusively for virtual desktop infrastructure (VDI). Because of the various licensing types, (user vs CPU), use of vSAN is limited to exclusively VDI workloads, but does offer unique price and package options that further reduce VDI costs and boast both the benefits and performance of a distributed storage platform.
vSAN can also be purchased as part of the VMware Cloud Foundation together with vSphere, NSX and vRealize. Cloud Foundation is a fully-integrated Software Stack that bundles compute, storage and network virtualisation into a single platform and that can be provisioned as a private cloud on-site or as a service in a public cloud. The Cloud Foundation helps to break down traditional administrative silos into data centres and merge computing power, storage, network, and cloud management, enabling comprehensive support for application deployment.
Bechtle has a VMware core team that focusses exclusively on VMware topics and possesses very broad and in-depth knowledge. This is reflected in the high level of certification each of the team members have attained.
With eleven branches in Switzerland, their experience and skills are evenly distributed throughout the country. As part of the Bechtle Group, we can also rely on our Lead Virtualisation Competence Centre in Munich and the other Bechtle branches in neighbouring countries in order to procure additional manpower or expertise.
Bechtle is a long-term VMware Partner, Premier Solution Provider and has Master Services Competency for Data Center Virtualisation.
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