Rivenditori di server
What is virtualization? In simple terms, virtualization is the process of creating virtual (rather than physical) versions of some components. Virtualization can be applied to computers, operating systems, storage devices, applications, or networks. However, server virtualization is the core of virtualization.
Today’s x86 servers are designed to run only one operating system and application at a time, which creates challenges for IT departments. As a result, even small data centers must deploy large numbers of servers, each of which runs at only 5% to 15% of capacity, which is inefficient by any measure. Virtualization uses software to emulate hardware and create virtual computer systems. This allows enterprises to run multiple virtual systems—and therefore multiple operating systems and applications—on a single server, which enables economies of scale and increased efficiency. Consolidating server hardware with VMware’s virtualization platform, VMware vSphere® with Operations Management™, eliminates overprovisioning, increases server utilization, and limits IT’s impact on the environment.
Through server consolidation, your company can:
1.1 Cut hardware and operating costs by up to 50% and energy costs by up to 80%.
1.2 Reduce the time to provision new servers by up to 70%.
1.3 Reduce downtime and improve reliability with business continuity and built-in disaster recovery capabilities.
1.4 Deliver IT services on demand without relying on hardware, operating system, application or infrastructure providers.
VMOTION
Function:
VMware VMotion can realize dynamic migration of virtual machines without interrupting services
Benefits:
Zero downtime: Perform planned workstation maintenance and upgrades, migrate workloads, and improve resource utilization
Continuous availability of workstations, complete transaction integration
Supports Fibre Channel and iSCSI SAN environments and NAS
VMware HA (High Availability)
Function:
When a server fails, automatically start a new virtual machine
Advantages:
High availability for all applications at a very low cost
No need for completely identical duplicate hardware
Higher cost advantage than traditional clusters, easy to use and operate
No need to purchase 2 operating systems, dual-machine software
Traditional HA sometimes has problems with unsuccessful switching
VMware Fault Tolerance (FT)
Real-time monitoring of the virtual machine’s operating status to ensure that a virtual machine automatically restarts in another virtual machine after an error occurs
VMware Distributed Resource Scheduler (DRS)
Functions
Dynamically adjust computing resources across resource pools
Intelligently allocate resources based on predefined rules
Benefits
Align IT and business priorities
Dynamically improve system management efficiency
Automated hardware maintenance
