Interesting. I keep getting mixed messages from IBM. It sounds like you are talking about z/OS under z/VM?? I was talking about z/VM itself in its own LPAR and its Linux guests but z/OS running the show and just including some z/VM volumes that it could see in the i/o gen. Linux does timestamp its i/o from what I was told but it was still unclear whether on minidisks rather than full vols if it counted. I was also told that VM has been engineered to do PPRC and not XRC and to look at that solution instead (1800 miles makes that hard).
Marcy Cortes "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Jim Moling Sent: Tuesday, July 31, 2007 4:11 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: [IBMVM] XRC use and z/VM We are running XRC under z/VM 5.2 and it's running just fine. Issues we had were all z/OS related and were fixed by applying maintenance and making sure that enough memory was allocated to the virtual machine (we had problems with z/OS dying when XRC exausted all memory for it's buffers over a couple of days time). The timestamping concern you mention should be addressed by maint - check out the XRC PUT bucket (if you haven't done so already), also make sure that you have all maint related to the DASD boxes on each end applied (should be a PUT bucket available for them as well) - also, if you havent checked the PUT buckets in a while then you might find some new info has been added. It's also a good idea to run an SMP/E ERRSYSMOD report to see if you have any outstanding errors on your systems that relates to this (but make sure you receive the latest hold data first if you haven't done it in a while). Hope this helps. |---------+-------------------------------> | | Marcy Cortes | | | <[EMAIL PROTECTED]| | | sfargo.com> | | | Sent by: The IBM | | | z/VM Operating | | | System | | | <[EMAIL PROTECTED]| | | .EDU> | | | | | | | | | 10/11/2006 01:43 PM | | | Please respond to | | | The IBM z/VM | | | Operating System | | | | |---------+-------------------------------> >----------------------------------------------------------------------- --------------------------------------| | | | To: IBMVM@LISTSERV.UARK.EDU | | cc: (bcc: James Moling/IR/FMS) | | Subject: XRC use and z/VM | >----------------------------------------------------------------------- --------------------------------------| Any issues with VM 5.1 or 5.2 and XRC? My storage guy said to check on timestamping i/o? or something like that - and make sure we have all the PTF's on for that. I wasn't quite sure what to search on in IBMLink. Marcy Cortes "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation."
