I installed more memory in h1ldasgw0 and 1 at the request of Dave.  Now both have 24GB total memory, using the original Sun/Oracle sticks that came out of these machines.  On booting h1ldasgw1 after installing the memory it complained about a Non-recoverable ECC error from one of the sticks, in the iLom management interface this was (/SYS/MB/P0/D8).  I re-opened the chassis, reseated the memory, cleared the iLom fault and the error did not return.  However, we should keep an eye out for any ECC/memory faults that may occur in the future on this machine.

Installing the memory requires stopping h1fw0,1, so there will be some (non-overlapping) frame data gaps for the period between appx. 11:15AM-12:30PM.