Ted The expectation with synchronous is that everything you write will take at least twice as long - including writing reports to SPOOL. With Remote Copy I find there is just too much in SPOOL that is too valuable to throw away, and must be rerun to get it back Other may have different experience to me. Throwing away and rerunning most of the batch run just seems to be such a waste when you have decided to incur the cost of synchronous remote copy.
There are quite a few other techniques I've seen and used to get around SPOOL problems so it can use Synchronous Remote Copy: 1) Control/D Users putting most of their large SYSOUT directly to the CDAM file via a SUBSYS parm in the JCL 2) Direct Output to Sequential files and use DFSMS Compression and Striping 3) Use Asynch Remote Copy for SPOOL - suffer a small loss instead of a TOTAL loss 4) Divide the Sysplex into a set of mini-MAS and use NJE Personally, unless customers are running GDPS/PPRC I don't see the sense in running Synchronous. I find less than 5% of customers are using CRITICAL, DOMINO or Fencing, which means you will probably lose data anyway. Why not just use Asynch? I'm am amazed that your CKPT1 and CKPT2 in DUAL mode can be generating that much activity. I would love to see your peak hour RMF data from the 9 LPARS - just those volumes. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Ted MacNEIL > Sent: Sunday, 19 June 2005 8:00 AM > To: [email protected] > Subject: Re: DR and JES2 Spool/Checkpoint and SRDF/Replicate > > ... > And that's it? You didn't use DUAL mode? You didn't re-evaluate and adjust > your Queue parms (Dormancy and Hold)? > ... > > Did all of that. > I wasn't born yesterday. > > We even had IBM come in with their Gurus. > Which was easy considering I worked for IGS, Canada at the time. > > We even tried moving it to a different DASD vendor. > > > -teD > (The secret to success is sincerity. > If you can fake that, > you've got it made!) > ---------------------------------------------------------------------- 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
