Which VM storage policy settings should the administrator configure to meet these requirements?

A cloud administrator needs to configure a VM storage policy for virtual machines that will host a business critical application. The environment consists of a single cluster with six hosts. The application is storage I/O intensive and redundancy must be provided at the highest level possible.

Which VM storage policy settings should the administrator configure to meet these requirements?
A . RAID-1 FTT = 3
B . RAID-1 FTT = 2
C . RAID-5
D . RAID-6

View Answer

Answer: B

Explanation:

RAID-1 is a mirror configuration that provides high availability by creating multiple copies of a VMDK. RAID-5 and RAID-6 are erasure coding configurations that provide fault tolerance by distributing data and parity across multiple hosts.

The number of failures to tolerate (FTT) determines how many copies or parity blocks are created for each VMDK. For example, RAID-1 FTT = 2 means that there are three copies of each VMDK. Therefore, based on your requirements, a possible VM storage policy setting could be RAID-1 FTT = 2,

which would provide redundancy at the highest level possible with six hosts. https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/com.vmware.vsphere.vmc-aws-manage-data-center-vms.doc/GUID-EDBB551B-51B0-421B-9C44-6ECB66ED660B.html