I believe you also do it between Delaware,  and Weeeeehawkin, NJ. Which
makes me wonder about the 32 mile statement?? I know the replication was
there. I may be incorrect about the geog.

                                                                   bobbee

From: "Juch, Robert" <[EMAIL PROTECTED]>
Reply-To: MQSeries List <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Re: Backing up "Q" files but not the "LOG" files
Date: Thu, 18 Nov 2004 11:44:31 -0500

IBM's fiber connections can now be 32 miles long.

We mirror (not through ficon) our mainframes to both Long Island and
Maryland.

R?S
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

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