vSAN ESA Raid 1

 vSAN ESA Raid 1

2 way mirror vm

The perf leg is a two way mirror

The cap leg is redundant and striped

3 way mirror vm

The perf leg is a three way mirror

The cap leg is redundant and striped

4 way mirror vm

The perf leg is a four way mirror

The cap leg is redundant and striped

vSAN ESA Raid 5 and Raid 6

 vSAN ESA RAID 5 and RAID 6 vms

Note: The layout of the cap leg varies depending on the number of hosts.

Raid 5 vm with 8 hosts

The perf leg is a two way mirror.

The cap leg is Raid 5

Raid 6 vm with 8 hosts

The perf leg is a three way mirror.

The cap leg is Raid 6

VCLS and Retreat Mode

Activating Retreat Mode

New as of vSphere 7.0U1

Step 1: Select the cluster that needs to go into retreat mode.

Step 2: Look at the url of the cluster and document the four digits that follow domain-c word

Step 3: Select your vCenter Server and go to Configure

Step 4: Add an advance setting called config.vcls.clusters.domain-c????.enabled 

Step 5: In the value column, Add the word False

          Step 6: Click on ADD and then click on SAVE 

 

 

This change will automatically shut down and then delete these virtual machines.

For more information:

https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-F98C3C93-875D-4570-852B-37A38878CE0F.html