Shulou(Shulou.com)06/02 Report--

Disk management

Head-track-sector-cylinder of the internal structure of the disk

Calculate the size of the disk:

Total number of sectors * size of each sector (512)

Awk method, which supports decimals by default

Bc calculator, which can only be counted as integers by default. Bc-l can be counted as decimals.

$() does not support decimals by default

Python

Introduction to Array raid

Raid10 is a combination of raid 0 and raid1. It requires at least 4 hard drives and can only use half of its capacity. It has both redundancy and performance, but it is expensive.

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