Mark, Maybe it's a case of differing experience. The first time I came across DEFRAG being used it was all about reducing seek on 3380, and I was questioning the benefit of this on 3880-23 controllers.
The benefit of reducing seek with DEFRAG still crops up, even on this list. I would bet that it is the performance improvement alluded to in some of the responses. Disk arrays did nothing for fragmented space, but they rendered obsolete any SLED based performance techniques based on reducing seek - including DEFRAG. Ron > > Disagree. That did nothing for fragmentation. That was always the > primary > purpose of defrag - not performance. Consolidating extents was just an > extra benefit. It wasn't until large DASD and DFSMS changes came about > (or using ISV products that have "STOPX37" functionality) that made DEFRAG > pretty much obsolete. If extent consolidation is really what you want, > FDR > COMPAKTOR can do that part only without "defragging" the entire volume. > ---------------------------------------------------------------------- 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
