administrator@vsphere.local is an account created by default in the vsphere.local vSphere SSO domain.
If you have any other vCenter Servers or components joined to the same SSO domain (vsphere.local), then changing the password for administrator@vsphere.local will apply for all servers / components in the same domain.
If you are familiar with Active Directory, think of administrator@vsphere.local as an active directory account, and then having two domain controllers in the same domain. Changing the password on the account applies to anything else in the same domain.
Cheers, Matt.
VCP6-DCV | VCAP6-DCV Deploy
@mattallford
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