Chapter 2. System enhancements 45
Sequential data striping can be used for physical sequential data sets that are subject to
intensive I/O for critical applications. Sequential data striping uses extended-format
sequential data sets that SMS can allocate over multiple volumes, preferably on different
channel paths and control units, to improve performance. These data sets must reside on
volumes that are attached to IBM 9340 or RAMAC Array Subsystems, to IBM 3990 Storage
Subsystems with the extended platform, ESS, or DS8000®.
Sequential data striping can reduce the processing time required for long-running batch jobs
that process large, physical sequential data sets. Smaller sequential data sets can also
benefit because of the improved buff ...