> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Ted MacNEIL > Sent: Thursday, April 30, 2009 11:54 AM > To: [email protected] > Subject: Re: relationship between directory blocks and the number of > members in a PDS ? <Snipped> > With PDS's, I usually allocate in multiples of 44, since that's how many > directory blocks fit on a track. > And, I usually allocate a cylinder's worth.
As I learned here on this list, that's not *quite* true. It's 45 per directory track except for the last (or only) track, which is 44 + EOF. So use 44 for a one-track directory, and ((n - 1) * 45) + 44 for multiple-track directories, where "n" is the desired number of tracks. Peter This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- 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
