Stephen Many thanks for researching and clarifying this.
Regards Brian > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Stephen O'Neal > Sent: 16 September 2008 19:47 > To: u2-users@listserver.u2ug.org > Subject: [U2] If you run UV, Read This !!! Change to UV > Backup Recommendations > > 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/ ------- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
