참조글.
LSI는 Cached IO를 장기적으로 없앨거라고 합니다. disk io가 너무 좋아졌죠.
The Cached IO " (All read and write data passes through controller cache memory on its ways to or from host memory, includes write data in Write-Through mode), legacy option is being eliminated in a future release.
델 PERC 710에는 Cut-through IO라는 것이 들어 있습니다.
이것은 SSD에 적합한 것으로 성능을 2배로 높여준다고 합니다.
Cut-Through IO is an IO accelerator that boosts the throughput of devices connected to the PERC Controller. It is enabled through disabling the write-back cache (enable write-through cache) and disabling Read Ahead.
- to be continue -
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