We are migrating Sharepoint 2010 farm to SharePoint 2013. Is it better to use same Farm Admin account for new SharePoint 2013 farm ?
I would go with the new service account, i am sure it is not best practice to share the account between the farms.
- Managing the password of the farm admin account with two farms is big issue.
- if you locked out the account, both farm will go down.
But if you are going to decommission the sharepoint 2010 farm as soon as migration completed then i may do this.
But again, as best practice use the new farm admin account.