Continuous availability is the promise of the cloud. Tech refreshes sans downtime is a part of this promise. One of the factors that enable cloud services to deliver this promise is the use of VMware as part of their service offering.
VMware comes with a number of computing kits. VMware vSphere enables scalable server consolidation and functions as a high performance virtualisation layer.
vSphere abstracts server hardware resources and makes servers sharable across virtual machines . It consolidates workloads, automates business continuity, and facilitates centralised management of all applications.
VMware vCenter Site Recovery manager is a disaster recovery solution for multi-site environments. The Distributed Resource Scheduler (DRS) aligns computing resources to business needs and orchestrates load balancing across host machines, and optimises power consumption during peaks and troughs in the business.
vMotion eliminates the need for planned downtime by allowing live virtual migrations between machines.
Hadoop workloads can be run with vSphere to enhance utilisation, reliability and agility of the data center.
VMware delivers greater control over the network to the end user. It allows users define priority access to network resources in synchronisation with business policies. Network provisioning can be centralised and administration / monitoring of the data centre can be achieved by a process of network aggregation.
High availability is the foundation on which VMware promises are made. But, VMware does not confront the IT Administrator with the complexities of traditional clustering and builds in a fault tolerance that promises zero data loss in the event of server failures. It automatically detects and recovers systems even when the operating system fails. The agentless disk backup (with data de-duplication) reduces the amount of disk space consumed and eliminates any third party costs that may be incurred by users for replication of data.
VMware was designed to automate common tasks. The technology allows users deploy and patch vSphere hosts in minutes or create / configure profiles instantly. The update manager performs most tasks in the background non-intrusively.
Interestingly, security is never compromised even when performance is enhanced by eliminating anti-virus footprints. Security is offloaded to a virtual appliance called vShield Endpoint provided by partner organisations. vShield Endpoint is designed to eliminate anti-virus storms, implement end user access policies, and manage custom access configurations while facilitating compliance with existing legal mandates.