[repack] - Crystaldiskmark

This is where the real-world performance of a drive is often truly tested. It measures how fast the drive can access tiny, scattered fragments of data (usually 4KB in size). This mimics the behavior of an operating system booting up, launching applications, or browsing the web. A drive with massive sequential speeds but poor 4K random speeds may feel sluggish in daily use. CrystalDiskMark tests this at different queue depths (Q1T1, Q32T1, etc.) to simulate how the drive handles multiple requests at once, which is vital for database servers and heavy multitasking.

This measures the speed at which the drive reads or writes large, contiguous blocks of data. This is the metric manufacturers use on the box (e.g., "7000 MB/s"). It is most relevant for tasks involving large file transfers, such as copying 4K video files or moving massive archives. High sequential speeds are the hallmark of modern NVMe SSDs. crystaldiskmark

❌ ✅ Likely Windows file cache. Always run a test size larger than your RAM (e.g., 8 GiB) to bypass caching. This is where the real-world performance of a