I will rephrase my question. When did any vendor last ship a 3390 DASD to anyone with non-RAID SLEDs inside for use on any kind of operating system which did not have direct support for FBA in its customer-usable access method repertoire? There must have been some kind of announcement made which is still findable online. IBM continued to manufacture and sell things after this date that they called 3390s but which were implemented internally with RAID, I believe.
Bill Fairchild ----- Original Message ----- From: "Anne & Lynn Wheeler" <l...@garlic.com> To: IBM-MAIN@LISTSERV.UA.EDU Sent: Monday, June 2, 2014 9:55:46 AM Subject: Re: real vs. emulated CKD dasdbi...@comcast.net (DASDBILL2) writes: > I know it has been "decades" since IBM manufactured its last real CKD > controller, but what was the exact date when the last new one was > shipped? re: http://www.garlic.com/~lynn/2014g.html#82 Costs of core http://www.garlic.com/~lynn/2014g.html#83 Costs of core depends on how you differentiate CKD and FBA ... 3380 was already moving to fixed-block cells (track space calculations have 3380 rounding up to cell size). part of this is driven by increasingly sophisticated error correcting code technology being on fixed size blocks http://www.garlic.com/~lynn/2014g.html#75 non-IBM: SONY new tape storage - 185 Terabytes on a tape. fba-512 has been standard since the 70s with 3310s & 3370s ... but currently is move to fba-4096 ... as part of error correcting technology. http://en.wikipedia.org/wiki/Disk_sector the above has IBM sizes in 512, 1024, 2048, & 4096 in the 70s. The enhanced CMS filesystem introduced formating block size option ... but on 3310s & 3370s ... used multiples of 512byte physical blocks. however, industry standard transition to 4096 starting in 2007 continuing through Jan2011. IBM article on subject: http://www.ibm.com/developerworks/library/l-4kb-sector-disks/ -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
