On Thu, 9 Apr 2009 03:18:35 -0500, Barry Merrill wrote: >With regard to the 8-byte clock wrapping in 2042, >I believe that IBM has to resolve this issue >not later than 2011 or 2112, because tapes can >have a maximum retention period of 30 years. > Isn't retention period immediately converted to EXPDT, and EXPDT stored on the tape? Is that in TOD format? Regardless, the major hurdle would be changing the label format, not merely a hardware innovation.
How was this handled for Y2K? Windowing? What's the current capacity of EXPDT on tape labels. Is there an Extended Clock Comparator to match the ETOD clock? Else there will be ugly problems at the 2042 transition. (Those could almost be solved by windowing in the Comparator hardware, except for applications that might rely on the behavior of HIGH_VALUES or LOW_VALUES.) -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
