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Ops Development Stories
Ops Development Stories
Jun 18, 2021 · Fundamentals

How Do Disks Work? A Deep Dive into HDD, SSD, and Ext4 Filesystem Architecture

This article explains the physical and logical operation of mechanical hard drives and solid‑state drives, details the Ext4 filesystem structures such as superblocks, inodes, block groups, flexible and meta block groups, and outlines allocation strategies and link types.

HDDInodeSSD
0 likes · 13 min read
How Do Disks Work? A Deep Dive into HDD, SSD, and Ext4 Filesystem Architecture
Refining Core Development Skills
Refining Core Development Skills
Jul 2, 2020 · Fundamentals

Performance Comparison of SSD and HDD in Server RAID Configurations Using fio

This article details a systematic fio benchmark comparing sequential and random I/O performance of RAID‑5 servers equipped with SSDs versus HDDs, revealing that while sequential throughput is similar, SSDs deliver dozens‑fold higher bandwidth and dramatically lower latency for random reads.

HDDIO performanceRAID
0 likes · 6 min read
Performance Comparison of SSD and HDD in Server RAID Configurations Using fio