https://www.ibm.com/support/knowledgecenter/SSLTBW_2.4.0/com.ibm.zos.v2r4.idai200/da6i2118.htm Discussion on Speed / Recovery option.
On Fri, May 15, 2020 at 5:34 PM Seymour J Metz <sme...@gmu.edu> wrote: > > Do you have something that I can cite for that, preferably something that all > wiki readers can look at? > > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > > ________________________________________ > From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of > Mike Schwab [mike.a.sch...@gmail.com] > Sent: Friday, May 15, 2020 1:14 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: Does allocating an HFS or zFS erase all existing data?intervals > formatted? > > All VSAM datasets including Linear are formatted when created. The > disk space used is not allocated to any other datasets. Previous data > left by deleted datasets is usually left in place (erase on delete is > an option but not used frequently) but frequently overwritten in a > short time so restoring a deleted data set is almost always > impossible. > > On Fri, May 15, 2020 at 4:25 PM Seymour J Metz <sme...@gmu.edu> wrote: > > > > I want to edit the wiki article [[Disk formatting]] to clarify the > > statement "s a general rule,[nb 1] formatting a disk erases most if not all > > existing data on the disk medium". Normally I would consult the logic > > manuals :-( > > > > When you allocate an HFS or linear data set, does AMS preformat all of the > > tracks? When you format a zFS, does that force formatting of all tracks? > > Can you provide references that I can cite for the answers? > > > > Thanks. > > > > > > > > -- > > Shmuel (Seymour J.) Metz > > http://mason.gmu.edu/~smetz3 > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > > > -- > Mike A Schwab, Springfield IL USA > Where do Forest Rangers go to get away from it all? > > ---------------------------------------------------------------------- > 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 -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
