DRS, Distributed Resource Scheduler

VMware DRS (Distributed Resource Scheduler), sums up computing capacity across a collection of servers and is allocated to the VM’s based on its needs and requirements. This allows the VM’s to recieve the resources dynamically, when it is required. If in case a VM experiences an increase in load, DRS automatically allocates additional resources, without affecting other VM’s. This is done by continous monitoring of resources by VMware DRS.
Continue reading

How FT Works?

FT or Fault Tolerance, provides continuous availability for the protected virtual machines, in the event of a VM/hardware failure. It ensures zero downtime preventing data loss and here’s where FT differs from HA. This is done by creating a live shadow instance of a VM (running on another host), referred as the Secondary VM, that is always up-to-date with the original VM, referred as the Primary VM. FT works as below:

Continue reading