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What's the use of windows hard disk write cache when the hard drive already has more than 8 megabytes of cache?

Fresh5 days ago
Mar 15, 20261795 views
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Problem

Doesn't a hard drive use its cache with high utilization? I see up to 20MB/s difference on file writes when I disable windows disk write cache. Does anybody know why cache size matters this much?

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Fix for: What's the use of windows hard disk write cache when the hard drive already has more than 8 megabytes of cache?

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On a healthy Linux system, I see about half the RAM used by disk cache and buffers. That's several orders of magnitude higher than the amount of cache in hard disks. Furthermore, access to RAM is faster than access to disk cache. Furthermore, the OS…

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