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David t's Blog – May 2011 Archive (3)

IBM's New Active-Active Solution for DB2 and IMS on z/OS

IBM has a new availability solution, GDPS active-active continuous availability (GDPS/A-A), that offers an unlimited distance between data centers, cross-site workload monitoring, automated workload balancing, and recovery time objectives measured in seconds.  I have a few highlights here.  Full details can be found in…

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Added by david t on May 24, 2011 at 6:00pm — No Comments

Should You Switch from IBM's SQL Replication to Q Replication?

SQL Replication is a data replication technology that's been used with great success in many shops for over 20 years. Yet, IBM also provides the Q Replication technology that has developed an excellent reputation for high performance, continuous availability, and zero-downtime database migration. Naturally, that leads SQL Replication users to ask if they should switch from SQL to Q. The answer, like the answer to many other questions, is... "it depends." :)

 

You have your…

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Added by david t on May 13, 2011 at 8:00pm — No Comments

pureScale, Q Replication, and Active-Active Databases

IBM has an excellent new white paper on developerWorks about using Q Replication for active-active databases with DB2 pureScale.  It covers everything from basic terminology and set up to why WebSphere MQ adds value to active-active replication.  I like this paper for two reasons.  First, it's the most complete documentation IBM has for using Q Replication with DB2 puresScale. …

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Added by david t on May 11, 2011 at 6:00pm — No Comments

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