Hyper-V Flashcards
What are the system requirements for Hyper-V?
SLAT-capable 64-bit processor
VM Monitor Mode Extensions
Hardware Assisted Virtualisation
Hardware-enforced DEP
How do Gen 1 and Gen 2 VMs differ?
Gen 1 Emulation based drivers 32/64bit Gen 2 Software based drivers Boot from vhdx 64bit
What is the linux command to verify the installation of LIS?
/sbin/modinfo hv_vmbus
What is memory buffer?
How much additional RAM is reserved additional compared to current utilisation percentage
What is memory weight?
Memory prioritisation between VMs
What is NUMA Spanning?
Non Uniform Memory Access
Machines with multiple CPUs, allows VMs to access memory from another CPU
Can configure virtual NUMA per VM to replicate host machine topology
What is the PS command to enable resource metering?
Enable-VMResourceMetering
collection interval: Set-VMHost -ResourceMeteringInterval
What is the PS command to view resource metering statistics?
Measure-VM
What are the requirements to hot add memory?
Static memory, Windows 10 or Server 2016 latest linux distro
Gen 1 or Gen 2
When importing virtual machines how do restore, register in-place and copy differ?
Register In-Place: Use existing UUID and file
Restore: Use UUID copying original file to new location
Copy: Create new UUID
How do you pass through devices from the host into the VM?
Direct Device Assignment *ensure devices is diabled in device manager
Get-Command device -Module Hyper-V
What is the PS command to update the version of a VM?
Update-VMVersion
How does VHD set work?
VHDS connects to VMs
AVHDX contains data changes
*for clustering
What is the advantage of VHD set compared to shared VHDX?
Online resizing
Host level backup
Hyper-V replica support
What are the limitations of using VHD set
No:
Live migration
Checkpoints
What are requirement for Hyper-V fibre channel SAN?
NPIV capable NIC
NPIV capable HBA (host bus adapter)
HBAs have World Wide Names for identificatin
What is SR-IOV?
Virtualises physical NICs to deliver packets directly bypassing hypervisor for improved performance
What is VMQ?
Stores incoming packets on NIC to bypass vSwitches
What is IPsec task offloading?
Offloads mathematically intensive IPsec functions to the CPU
In NIC teaming what does dynamic switch dependant mode use?
LACP
What are the different load balancing modes?
Address Hash: Uses IP and MAC to determine which NIC to send traffic
Hyper-V: Ties VM to specific NIC in team
Dynamic: Uses Address hash for outbound, Hyper-V for inbound
What is SET (Switch Embedded Teaming)?
Teaming built into hyper-v host
New-VMSwitch
*NICs must be same make, model, driver
What is RDMA?
Remote Direct Memory Access capable NIC
Allows data transfer directly to and from application memory bypassing data buffers in host operating system
Enable-NetAdapterRdma
