A developerWorks article appeared last week by Martin Fuerderer and Nicole Neubuerger on the subject of Running Informix Dynamic Server on Linux in Xen hypervisor - IDS in a virtual environment.
Xen is an open source Virtual Machine (VM) manager that works by inserting a thin sofware layer, the Xen hypervisor between the server's hardware and the operating system. It is known for being very lean (<50,000 lines of code) and offering near native performance.
The article starts with the basics on setting up Xen Hypervisor on Linux. Next it takes a look at IDS operating system specific characteristics - such as raw device support, Kernel Asynchronous IO (KAIO), Direct IO, No aging, and processor affinity - and how they typically interact with Linux. These leads to a testing plan to see how the operating system specific functionality holds up under Xen.
At the risk of spoiling the surprise.. it holds up well.
We are seeing a lot of interest lately in IDS virtualization, and the concept of an Informix Virtual appliance - IDS running on a virtual machine with developer software pre-installed and ready to use. What would you expect and how would you use this type of appliance? If you have an opinion on this please leave comments.
If you are interested in this area, and would potentially be willing to participate in a beta or early test of a VMware based IDS appliance please contact me at guyb _at_ us.ibm.com for more details.[Read More]
Administrating and Developing with Informix
From archive: July 2008 X
A developerWorks article published today provides a nice summary of IDS replication features. Replication technologies in Informix Dynamic Server by IDS engineers Madison Pruet, Nagaraju Inturi and Nick Geib, takes the reader through Enterprise Replication (ER) and High Availability Clustering, namely Shared Disk (SD) secondary servers, High-Availability Data Replication (HDR), and Remote Standalone (RS) secondary servers.
What I like about this article is that each technology is introduced with a simple example of setting it up, so as a quick start summary it works very well.
One link I would add to the list of resources at the end of the article is the Informix Dynamic Server 11: Extending Availability and Replication RedBook which is an excellent way to follow up and learn more about the topics introduced here.[Read More]
gbowerman 100000B5T0 3,069 Views
Two analyst reports on IDS 11.5 that were originally written in May have now been made available on the IDS website.
The first is by Michael A. Schiff from Current Analysis: IBM Launches Informix Dynamic Server 11.5 - originally released to coincide with the IDS 11.5 announcement at the IIUG Conference and provides an analytical summary, with positives and negatives on the 11.5 release.
The second report is by Matt Aslett from the 451 group: IBM's Cheetah 2 Informix database proves that it's good to share. The Strategy section begins with
IBM's initial plan upon acquiring Informix for $1bn in 2001 was to support the customer base and roll the best features into the DB2 product. It didn't count on the loyalty of the IDS users, however, and any suggestions of discontinuing the IDS product were effectively quashed with the release of IDS 10 in 2005.
Hard to disagree with that.[Read More]