Interview

is a computer networking device that is used to connect devices together on a computer network by performing a form of packet switching. A switch is considered more advanced than a hub because a switch will only send a message to the device that needs or requests it, rather than broadcasting the same message out of each of its ports.[1]

• The distribute switch is at the Datacenter Level
• The Distribute switch acts as a single virtual switch across all associated hosts. this allows virtual machines to maintain consistent network configuration as theey migrate across the hosts

• connect a vsphere distributed switch to a physical NICs on associated ESX/ESXi hosts.
• The number of uplinks on a vsphere distributed switch is the maximum number of allowed physical connections to the vsphere distributed switch per host.

is a port group associated with a vsphere distributed switch and specifies port configuration options for each member port. Distributed port groups define how a connection is made through the vsphere distributed switch to the network.

physical, data link, network, transport, session, presentation and application

a simple, integrated experience for managing EMC VNX Family, EMC CLARiiON, and EMC Celerra storage systems through both a storage and virtualization lens. It’s designed to provide simplicity, flexibility, and automation—key requirements for the journey to the cloud.

• Raid-0 -nm, ns and np
• Raid-1 -m, -ns and np
• Raid-5 -blocked m, distributed parity
• Raid-10 -blocked m, blocked striped

• -high avaliability- monitoring host and virtual machine heartbeats
• -Distributed Resource Scheduler-DRS functions by continually analyzing and optionally rebalancing the running x86 workloads across the VMware ESX Servers running in the cluster.
• -Enhanced vmotion Compatibility EVC is a cluster setting that automatically configures all hosts in the cluster to be VMotion compatible with each other.
• -swapfile vmx file
• -DPM distritubed power management

• Static – use static binding to assign a port to a virtual machine when the virtual machine connects to the distributed port group.
• Dynamic - use dynamic binding to assign a port to a virtual machine the first time the virtual machine powers on after it is connected to the distributed port group. Dynamic binding is depricated in ESXi 5.0.
• Ephemeral - use ephemeral for no port binding.

security, traffice shaping, vlan, team and failover, resource allocation, monitoring, miscellaneous

Storage processors are the interface between the switched fabric and the disk backplanes