"I've said it before, and I shamelessly grab this opportunity to say it again: FBA FBA FBA FBA ..."
The ironic part is that most of the data nowadays in MVS is VSAM, which is fixed 4096 blocks and is written using the media manager. The media manager also handles the HFS/ZFS files systems, PDSE, and the extended sequential, amoung other things. Adding to the irony is that VSAM has essentially been an FBA architecture since 1972! Adding more to the irony is that even 3390's recorded fixed blocks on disk. Each fixed block then contains the appropriate CKD information. And the final irony is that ALL dasd subsystems available today actual record on their HDA's in fixed blocks on SCSI devices! The CKD is coded/decoded by the controller into fixed blocks, which is then written/read from the raid arrays as fixed blocks! ===== Jim Sibley Implementor of Linux on zSeries in the beautiful Silicon Valley "Computer are useless.They can only give answers." Pablo Picasso __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com
