Recently saw a health warning in my 2013 CA that stated:
The farm account is used for the SharePoint timer
service and the central administration site, it is highly privileged and should
not be used for any other services on any machines in the server farm. The
following services were found to use this account: Distributed Cache
Service(Windows Service)
Remedy:
Browse to http://server/_admin/FarmCredentialManagement.aspx and
change the account used for the services listed in the explanation. For more
information about this rule, see "http://go.microsoft.com/fwlink/?LinkID=142685".
I don't see any issues with creating another managed account for DC but
didn't see any recommendations for what it could affect or impact, by doing so.
I found this peice talking about
how to change it with powershell, scratching my head on if i should use this
method or the one in the health warning if i do change it.
http://technet.microsoft.com/en-us/library/jj219613.aspx#changesvcacct