On Mon, 26 Jul 2010 14:50:20 -0400, Lizette Koehler wrote:
>However, the main question I have is - Is it still necessary to do this? According to EMC they indicated that the reason they added the S DEALLOC was because varies were taking upto 6 mins. So the use of S DEALLOC was to speed that process up. START DEALLOC is obsolete as of z/OS 1.7, as proven by the references located by Mark Zelden. >And the EMC software does a one on one vary. I am not sure, unless a total rewrite is done, that they could bunch the commands up if that were possible. In our case, we do not have our snap volumes sequential - always one here and one there, so a massive vary offline command could not be created. I would suggest that EMC investigate the use of the programmatic IEEVARYD system service, documented in "z/OS MVS Programming: Authorized Assembler Services Reference, Volume 2 (EDTINFO-IXGWRITE)" which allows system software to programmatically process console VARY commands via an API instead of the console. This API appears to allow an array of devices to be provided all in one API call. From this manual: 50.1 Description IEEVARYD varies one or more devices online or offline on a single system, or defines the automatically switchable attribute for a device that supports automatic tape switching. It has the same effect as the VARY device or VARY AUTOSWITCH operator command, but it provides return and reason codes to the calling program, rather than issuing messages to a console. Brian ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
