/D IOS,CONFIG(HSA) in SDSF will give you the amount of the hardware system area (HSA) that is available to perform configuration changes.
This is an excerpt from the z/OS 1.6 System Commands. > > > > -----Original Message----- > From: Werner Kuehnel <[EMAIL PROTECTED]> > To: [email protected] > Sent: Tue, 7 Jun 2005 12:15:54 +0200 > Subject: Additional DASD devices > > > Can someone tell me please, what storage areas will be used if I add let's > say 4096 DASD devices (new DASD subsystem) to my HCD configuration? > I seem to recall a situation months ago, when we defined our new STK V2XF > with the maximum of addresses, the available private region went down by 1 > MB. Unfortunately I can't remember what areas caused this. > > Werner > > > > > I/O devices, channels, control units, etc., are described by control > blocks that are in the part of central storage called the Hardware Storage > Area (HSA), which is allocated from the top down. These control blocks > are normally accessed and accessible only by the channel subsystem. Most > of them are not documented in the Principles of Operations. I don't > remember if there is any MVS operator command that can display how large > the HSA is. > > Bill Fairchild > > ---------------------------------------------------------------------- > 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 > John Cassidy Dipl-Ing Schleswigstr. 7 51065 Cologne Tel: +41 76 4198 658 EU ---------------------------------------------------------------------- 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
