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Let’s see how the results will change in the WebServer pattern, which typical trait is the complete lack of write requests.

The graphs for RAID0 arrays haven’t practically changed since the FileServer pattern, while the performance of RAID5 arrays has grown up significantly because the WebServer pattern with no write requests is the optimal operational mode for them. RAID1 has the same slump in the graph, and RAID10 has acquired a flat stretch in its graph.

These are the ratings of the arrays, which we calculated according to the same rules as in the FileServer pattern:

RAID10 has finally won the race! RAID5 arrays are high enough, and the performance of the four-disk RAID5 nearly matched that of the four-disk RAID0. The performance rating of the RAID1 array is somewhat lower because of the slump in one of the modes, just like in the FileServer pattern.

Lazy write doesn’t boost the performance of our arrays in this test. It’s got nothing to optimize as there are absolutely no write requests!

 
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