DiskResQ image sources — both CC0 1.0 Universal Public Domain Dedication.

hdd.jpg
Photographer: Raysonho @ Open Grid Scheduler / Grid Engine
Source: https://commons.wikimedia.org/wiki/File:HardDiskCloseup2.jpg
Original: https://upload.wikimedia.org/wikipedia/commons/d/d5/HardDiskCloseup2.jpg

ssd.jpg
Photographer: MatteX
Source: https://commons.wikimedia.org/wiki/File:Samsung_SSD_840_120GB_MZ-7TD120--7_BOARD_BOTTOM.JPG
Original: https://upload.wikimedia.org/wikipedia/commons/f/fe/Samsung_SSD_840_120GB_MZ-7TD120--7_BOARD_BOTTOM.JPG

License: https://creativecommons.org/publicdomain/zero/1.0/
Images displayed in grayscale using CSS. Source photographs unchanged.