Thanks for your reply.... at least that verifies my original thought that 47476 was the 'track capacity' as published by IBM and that my memory may be still partially functioning....
James F. Smith \ -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Anne & Lynn Wheeler Sent: 17 June 2006 21:40 To: [email protected] Subject: Re: Track capacity? James F Smith wrote: > That doesn't look right, but please consider my bad memory. But wasn't the > track capacity for a 3380 - 47476??? you are talking about the largest formated record w/o key. if you look at the calculation, a keyless record required adding 12 bytes and rounded up to multiple of 32bytes and then adding 480 to calculate how much of raw track capacity a formated record took. so single formated record 47476 and adding 12 = 47488 by chance is multiple of 32 and 47488+480 = 47968 47968 is the raw, unformated track capacity. each formated record has overhead, as per the calculation. re: http://www.garlic.com/~lynn/2006m.html#5 track capacity i've done q&d conversion of the old gcard ios3270 to html. http://www.garlic.com/~lynn/gcard.html it has record size calculations ... but it predated 3390 ... so only has up thru 3380 http://www.garlic.com/~lynn/gcard.html#26.3 from above Track Record Size Device Capacity Without key With key 3375 36000 224+#(D+191) 224+#(K+191)+#(D+191) 3380 47968 480+#(D+12) 704+#(K+12)+#(D+12) Device Capacity Without key With key Notes: D is data length, K is key length # means round up to multiple of 32 ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
