In <[EMAIL PROTECTED]>, on 07/28/2005
   at 09:59 AM, Bill Fairchild <[EMAIL PROTECTED]> said:

>When PAV is involved, other considerations complicate matters.  Any 
>number  of I/Os can theoretically be happening simultaneously within
>the same  data set  from any number of exposures as long as all those
>I/Os are read  only.  But  if only one of them wants to do a write,
>then serialization is  necessary  within the control unit.

How did IBM handle that on the 2305 and the paging 3880 boxen?
 
-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     ISO position; see <http://patriot.net/~shmuel/resume/brief.html> 
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

----------------------------------------------------------------------
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

Reply via email to