Cory, If you want to share the SYSUAF.DAT (and you technically don't have to in a VMS cluster, but it gets a bit hairy with multiple ones), you would put it on a common disk directly mounted by all nodes and pointed to by the SYSUAF system logical name, oh and usually a bunch of other files are included with this, There is a template command procedure in SYS$STARTUP that describes them, I believe SYLOGICALS. A quorum disk is only needed to provide a vote, and usually only used in a two node cluster. Recent VMS versions do have external authentication capabilities but you still have a SYSUAF.DAT as a backup... - Dave On 6/12/2014 5:40 PM, Cory Smelosky wrote: Got a (hopefully) quick question regarding clustering I've got a VAX<---->Alpha cluster rolling (VAX for booting VAX satellites, Alpha for Alpha satellites) and I'm running in to an issue with the SYS$UAF stuff. Only the password/user DB...nothing else needs shared. What's the easiest way to share it between the VAX and Alpha nodes WITHOUT a using a quorum disk? 1). Kerberos or something? (I could have both query active directory...) 2). Shove SYS$UAF on MOIRA$dka100, mount in SYLOGICALS on all nodes? 3). Other