There is an immediate change to the recommended steps for backing up UV. NEW RECOMMENDED BACKUP STEPS:
SUSPEND.FILES ON SYNC <--- This is the New Recommendation !!! The buffers must be flushed to disk !!! <<Break off mirrored set, create Flash Copy, etc.>> SUSPEND.FILES OFF <<Make backup from split off mirrored set, Flash Copy, etc.>> <<Rejoin mirrored set, throw away Flash Copy, etc.>> Please note that a "sync" is now recommended immediately following the initiation of the SUSPEND.FILES ON command. EXPLANATION: At U2U (U2 University) San Diego, I had an opportunity to speak with Neil Morris (Advanced Technical Support Analyst for UniVerse) about the Headers of Dynamic Files. It turns out, that the process that modifies the Header of a Dynamic File (when the file expands or contracts), will write the updated Header. The SUSPEND.FILES ON command only stops the writes to disk. It does not initiate a "sync". Therefore, a "sync" must be added immediately following the SUSPEND.FILES ON command in order to flush the buffers to disk, and make absolutely sure the Header of Dynamic Files was written to disk. UNIVERSE HIGH AVAILABILITY EXECUTIVE OVERVIEW VERSION 21 NOW AVAILABLE: If you wish to have a copy of Version 21 of the UniVerse High Availability Executive Overview PPT, please send me an e-mail off line. I will send copies to those who request next week, after U2U San Diego. U2 Lab Services has you covered, Steve O'Neal U2 Lab Services Sales Specialist, IBM Data Management, IBM Software Group P.S. There is another U2U in Atlanta, October 7-9, 2008: http://www-01.ibm.com/software/info/u2/university/index.jsp ------- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
