Lionel has given you a solution that works and I have you an alternative solution
Sent from my iPhone No one said I could type with one thumb > On Dec 18, 2025, at 16:24, Pommier, Rex > <[email protected]> wrote: > > Understood, but the 3350 hasn't been available for over 30 years, and the > 3390 format has been available for almost 30 years. I would think the > "prevailing mentality" could have changed in those 30 years. Not worth > quibbling about, but it just strikes me as odd that even with SDB available > for - I don't know how long - but with 3390 format being the standard for > almost 30 years, I'm still seeing things show up from vendors defaulting to > 3120 or 6160 block sizes for FB/80 and around 4-6K for load library blocks. > Inertia is a great force! LOL > > Rex > > -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On Behalf Of > salva > Sent: Thursday, December 18, 2025 4:03 PM > To: [email protected] > Subject: Re: [EXTERNAL] Re: Grrr! Yes, TSO TRANSMIT destroys PDSes (Rant) > > 6160 was the best fit for 3350 (97%) with small buffer size. > > El jue, 18 dic 2025, 22:45, Pommier, Rex < > [email protected]> escribió: > >> One thing I've never understood. Why 6160 for a FB/80 sequential >> dataset? >> >> A FB/6160 has 8 blk per track = 49200 bytes of 56664 = 86.9% >> >> But bumping it to FB/80/6480 yields >> >> 8 blocks per track, 51840 bytes per block, 91.5% utilization. >> >> Rex >> >> -----Original Message----- >> From: IBM Mainframe Discussion List <[email protected]> On >> Behalf Of salva >> Sent: Thursday, December 18, 2025 3:28 PM >> To: [email protected] >> Subject: [EXTERNAL] Re: Grrr! Yes, TSO TRANSMIT destroys PDSes (Rant) >> >> A FB 80/27920 has 2 blk per track = 55840 bytes of 56664 = 98.5% >> >> A FB/6160 has 8 blk per track = 49200 bytes of 56664 = 86.9% >> >> It is a important difference, but not huge. >> >> El jue, 18 dic 2025, 22:16, rpinion865 < >> [email protected]> escribió: >> >>> Broken record here. But I see our QR libraries with the following >>> DCB information FB 80/6160 non-loadlib datasets and U 0/6133 for >>> load libraries. The libraries are not large, but still why not join >>> at least the 1990s. >>> >>> >>> >>> "Confidentially doc, I am the wabbit." >>> >>> Bugs Bunny >>> >>> Sent with Proton Mail secure email. >>> >>> On Thursday, December 18th, 2025 at 3:59 PM, Mike Shaw < >>> techs ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
