Tag: SIOC

VMware VCP 6.7-DCV – Objective 1.4 – Differentiate between NIOC and SIOC

by Samuel Mitchell, posted in VMware

The following notes will assist you to prepare for this objective:

  • This objective is about managing noisy neighbors!
    • NIOC for network & SIOC for storage
  • You need to demonstrate understanding of
    • What dimensions you can control and applied-to
    • Limitations of service
    • Pre-reqs for implementation
  • Foundation knowledge of proportional share allocation is expected
    • What does low, medium & high mean?
    • What happens when you use numbers instead of labels?
    • How does the power on of another VM affect share allocation?

Reference:

vSphere Resource Management Guide pdf – Chapter 9-Managing Storage I/o Resources

vSphere Networking Guide pdf – Chapter 11 – vSphere Network I/O Control

VMware VCP 6.7-DCV – Objective 1.3 – Describe storage types for vSphere

by Samuel Mitchell, posted in VMware

The following notes will assist you to prepare for this objective:

  • Ensure you are clear on the differences between
    • Block (LUN/vVOL)
    • File access
    • vSAN
  • Read storage questions slowly and carefully
    • Are you being asked about VMs and their virtual hard disks?
    • Are you being asked about what storage vSphere can address?
  • VMware loves acronyms
    • For this objective, you need to learn lots of them
  • For example
    • Can you differentiate SIOC from VAIO?
    • Do you know if RDM is possible with NFS?
    • Happy with VASA providers?

Reference: vSphere 6.7 Storage Guide