All of our extensive testing with Iometer is, at the end of the day, merely synthetic testing. A program such as this is no easy task to benchmark, especially when using synthetic measurements. The main thrust of the testing is to reproduce situations that are similar to real world applications and how they would behave. Deb Control File Cydia Jailbreak there. I feel that, if anything, our tests have under-emphasized the performance of this product in the server application. I understand this may be hard to believe considering the absolutely massive gains that we have seen here, but one cannot underestimate the power of write caching. Simply put, it is very hard to synthesize results that can show just how much the small random writes can paralyze HDD arrays under certain scenarios. If you add RAID 5 or RAID 6 into the mix, you can see some drastic slowdowns.
Any Raidset with parity on an HDD array can be painful to deal with. Here I will acquiesce to an LSI document that shows some of the results from standard real world application benchmarks. This is a graphic comparing the acceleration results between the previous version of CacheCade, which is read-only caching, and the current Pro version. There isn’t a lot that can be said about these results that isn’t already said in the results themselves. A FINAL CONSIDERATION One thing that raid sets with parity bring is data security. Another thing that they bring is degradation and rebuilding periods.
Unfortunately these scenarios can hobble any storage subsystem regardless of how busy it is. A degraded or rebuilding array simply does not care how inconvenient it is for the users or administrators. Such is life in a data center, but wouldn’t it be nice to have a parachute of sorts? With so many features of CacheCade Pro and the multitude of great things that it can accomplish, this is just yet another value-added proposition for one to consider. One of the most important metrics is up-time and solid, sustainable performance during usage. Nothing is more frustrating than a degraded or rebuilding array. Here we can see the tremendous amount of stability that having a fast, nimble cache flash layer can provide.
Applicable handing fees. MegaRAID SAS 9280-16i4e (LSI00210). eBay! CacheCade is installed by turning the license key you receive into an activation key on LSI's web-site. For this you will need the controller card's serial and safeID from MegaRAID management software dashboard. Once you have the activation key, you simply enter it in the MegaRAID software and you are all set.
When the storage solution is under duress, the flash caching can raise to the occasion to smooth out the transition period. A click of the chart will provide an up-close view of the graph.