MSA, Mirroring, and NetWare

The performance testing is largely done.

In short, Mirroring performance matches or is within a few percentage points of EVA performance. Mirror performance follows the slowest device, which in all tests is the EVA. Since the EVA is the benchmark by which we compare production performance, this tells me that we can safely expect to mirror at least some of the EVA data on the MSA.

MSA performance exceeds EVA performance significantly. This is NOT true for the same tests on a Windows server running locally. I can't theorize why this might be, but the data show it quite well.

Unfortunately, I lack the resources to do a TRUE concurrency test. I can't tell you how MSA vs EVA performs when 50 workstations are pounding random IO. From what I've seen, EVA should turn in better numbers in that case due to technological differences. On the other hand, EVA should have turned in faster numbers than it did in this single-streamer test.

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