IBM's fiber connections can now be 32 miles long. We mirror (not through ficon) our mainframes to both Long Island and Maryland.
Ò¿Ó Bob Juch Citigroup MQ Mainframe Support Team Weehawken, NJ 201-974-2147 mailto:[EMAIL PROTECTED] -----Original Message----- From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of Christopher Warneke Sent: Thursday, November 18, 2004 10:58 AM To: [EMAIL PROTECTED] Subject: Re: Backing up "Q" files but not the "LOG" files Kulbir, Sounds like what you really need is a redundant DASD solution and a DR center that is close enough to you to mirror disks at both sites. EMC and IBM both have technologies that support having the data centers some distance from each other. Shared Queues on z/OS can be 27km apart (I've heard that IBM has extended this, not sure how far). QSGs employ m/f coupling facilities so, my bet is that the Mirrored DASD solutions require closer proximity, for performance sake. Years ago, 2001, I worked for a bank that had a primary data center in Jersey City, NJ and a secondary data center in Manhattan, NYC. Several miles of fiberconn connected the 2 data centers. EMC DASD was mirrored at both sites. Both OS/390 and AIX 4.3.3 machines were supported. Failover worked quite well - the solution was without significant performance impact. I'm not sure that the solution that you're attempting to implement will perform well over 3k miles. What kind of DASD solution are you employing? What vendor/product? Do you have databases that are being replicated across both sites as well? Lemmeknow, Chris Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
