0   Timekeeping, Drifting, System Clock Accuracy?   The Question is:    M I have an AlphaServer ES45 Model 1B which is gaining time of 2-3 seconds/day. M  We are running a high availability application which doesn't like time going M  backwards so it is difficult to rectify. Over a 6 month period the clock ran   about 7 minutes fast.D  Anything I've found about clock drift mentions systems losing time.   G Two questions : Is there anything I can do to correct the issue without J  affecting my application? What is considered normal or acceptable for the9  system clock, we haven't seen it on any other Alpha (5).   The Answer is :   E   This and other timekeeping-related matters are discussed within the D   OpenVMS Frequently Asked Questions (FAQ) documentation -- you will@   want to link to an external time-base, and various options are>   available.  The FAQ also has details around the hardware and=   software clocks, and around the relative accuracy expected.    >   There are two topics refered to as clock drift, one involves@   lost or gained time with the most common being lost -- see the?   FAQ for this -- and the other variation of the topic involves =   using drifting to correct the system time.  Available tools <   do drift the time to correct inaccuracies, but for obvious>   reasons these mechanisms will slow or speed the system clock<   updates but will not cause the system time to be set back.   0  Answer written or last revised on  20-APR-2004 