IBM PureSystems vs. Oracle Exadata

I honestly don't see an area where the PureSystem couldn’t fit in and be of a great use due to its ability to integrate a multitude of technology, (some that are outdated even) to create a stable network platform. I think if a corporation is seeking to upgrade their system but is financially disadvantaged they couldn't make a better investment for more bang for the buck than buying the IBM PureSystem.

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Oracle Exadata is well-suited for environments where massive performance for Oracle databases is required. Storage indexes reduce the unnecessary I/O. Smart Flash
Cache accelerates random reads/writes.

Our OLTP application demands very high concurrency. Multi-node Exadata provides high availability and zero downtime during DB patching. It comes with lots of built-in automations, so it reduces many routine tasks for sysadmins, like network, storage, and VM configuration, and it also reduces many Oracle DBA tasks, like Oracle software installation, patching, and upgrades.

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• Data reliability- by monitoring and increasing load balances PureFlex has made data and applications available more readily across departments.
• PureFlex- has increased data integrity. By insuring that data is transported with greater fluidity, PureFlex has increased our data integrity by many folds. By helping us to be more precise in our data delivery, our customers have been more satisfied.
• PureFlex- Integration within and scalability has been seamless. We have not experienced very many issues and the ones we have experienced were readily mitigated with the expert help of IBM technicians.

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• Oracle Database : Deliver industry-leading security, high availability and scalability with Oracle Database, which has been significantly enhanced to take advantage of the Oracle Exadata Storage Servers.
• Exadata Smart Scan : Improve query performance by offloading intensive query processing and data mining scoring to scalable intelligent storage servers.
• Smart Flash Cache : Transparently cache 'hot' read and write data to fast solid-state storage, improving query response times and throughput. Exadata systems use the latest PCI flash technology rather than flash disks. PCI flash delivers ultra-high performance by placing flash directly on the high speed PCI bus rather than behind slow disk controllers.
• Hybrid Columnar Compression : Reduce the size of data warehousing tables by 10x, and archive tables by 50x, to improve performance and lower storage costs for primary, standby, and backup databases. Query high, query low, archive high and archive low.
• Infiniband Network : Connect multiple Oracle Exadata Database Machines using the InfiniBand fabric to form a larger single system image configuration. Each InfiniBand link provides 40 Gigabits of bandwidth–many times higher than traditional storage or server networks.
• Petabyte Scalability : Easily scale data warehouse to support enterprise data growth.

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• Efficiency- PureSystems has enabled our users to work more efficiently with customer orders, providing the requested data in a far less turn around time than ever before.
• Scalability- We have already have had to scale up our memory storage due to a successful agreement with a data warehouse and it was a seamless effort completing the project with the assistance of expert IBM technicians at our call when we had any questions.
• Combinability- PureFlex's ability to pretty much accept any other technology and incorporate it into a single network has saved us a tremondeous amount of money and time to stable platform.

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• The process of patching and upgrade of Exadata server components could be improved with a goal to minimize the overall effort, make it fully automated and transparent.
• Improved guidelines and possibly more sophisticated tools for sizing of new Exadata servers for migration from old legacy hardware.

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I am comparing Exadata with the Oracle RAC database experience. In addition to Oracle RAC features, Exadata provides automatic performance optimization through Smart Scan and storage indexes. Deep integration with the Oracle ecosystem and tight coupling with Oracle Enterprise Manager
for monitoring and management. Some downsides of Exadata are: a steep learning curve, concepts like cell offloading, IORM, and flash cache behavior aren’t intuitive initially. Operating
Exadata requires specialized DBA skills.

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Well there was a lot going for the vCE block systems we considered the 200 and 300 series. These two series seemed to overlap each other just about right where we are at in our IT needs. The 200 series leaned more to the less side of our needs and the 300 leaned to the farside of our needs. The vCE didn't appear to be compatible with a lot of our current configured components, while the PureSystem did. So that was the real clincher for us. We spent maybe a week integrating everything and testing to insure things had integrated as expected but it was well worth the effort and time.

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Oracle Exadata Database Machine had the best performance overall hands down. It clearly beat the competition and we were seeing 1000X improvement on SAP HANA. Oracle Exadata Database Machine beat that without us refactoring our code. To achieve that in HANA, we had to refactor the code somewhat. Now this was for our limited POC of 5 use cases. Given the large number of stored procedures we had in Sybase, we need to capture more production metrics but we are seeing incredible performance.

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• We were seeking a means to better leverage what we had without rebuilding the entire system, the PureSystem enabled us to do just that.
• At first we were very hesitant of the system's robustness, it was to be honest a little intimidating, however with IBM always ready to hear our question no matter how small they might of seemed, we got rolling very quickly, I won't say effortlessly but very quickly.
• When it came time on short notice that we needed greater storage and flexibility to incorporate some new application, the new system performed very well with incorporating the new applications and the increase of storage.

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• Single support from a single vendor with both machine and database from Oracle, which is costing us less.
• With Exadata, we need less technical manpower and less technical support. A business transaction with the integrated and centralized database helps us focus on other business needs.
• We don't need to buy additional licenses and Hardware for the next 3 to 5 years.

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