If you are considering getting a data warehouse appliance then you must ensure that you’d be able to achieve faster recovery times with the help of the appliance. For this, you may have to find out whether or not the appliance makes use of change-tracking restoration algorithms. Just so you know unless the aforesaid algorithms are there, achieving faster recovery times may continue to be a nightmare. Interestingly, if the appliance is good enough then it won’t only help you with the recovery times but may also deliver enhanced query performance. However, this will happen only if the appliance has been designed to maximize parallel processing performance.
Of course, for enhanced query performance, even the network efficiency should be maximized by the appliance. Meanwhile, it is worth mentioning that if the data warehouse appliance is based on the MPP architecture then you’d be able to take advantage of the appliance without any difficulty. This is because if MPP architecture is there then you can expect the appliance to efficiently use the commodity hardware resources. Furthermore, if your appliance has a network-optimized MPP architecture then you should be all geared up for maximum system performance. However, if the appliance has an MPP architecture even then it may not help you the way you’d expect it to.
This may happen if the appliance lacks some of the key features such as efficient parallel loading. However, it is also imperative for you to ensure that if efficient parallel loading is there then it does not mean that there should be some interruption as far as the queries are concerned. In fact, the appliance should be designed in such a way that the queries can continue uninterrupted. For this, you’d have to ensure that there is some provision for workload isolation. Otherwise, when loading takes place, there may be some interruption in terms of the queries.
Nevertheless, if the appliance has all of the aforesaid features then it may be complex to use and may not get deployed with ease. The good news is that you can always look for a plug and play appliance to take the complexity out of deployment. Furthermore, if you look for a plug and play appliance then you may be able to integrate it with your existing IT systems without any difficulty. Last but not least, the appliance should work well with all of your existing BI tools and IT components including the Hadoop APIs.