Reason: Some HDDs with 4 KiB physical sector size support changing their logical sector size. ![]() ![]() While this is usually transparently done by the translation layer, it is an overhead that can be avoided, and doing so will achieve increased performance. If they do not use the same sector sizes, the firmware will have to do the mapping between file system sectors and physical drive sectors. device / stacked block devices / file systems should use the same sector sizes. Solid state drives can sometimes support multiple formats. Since 2011, modern hard disk drives normally use 4 KiB sectors, instead of the conventional 512 bytes. See ĭifferent storage devices use different sector sizes. This smallest usable unit is generally referred to as a sector, as this was the smallest subdivision of the rotating parts of traditional storage devices (solid state drives use memory cells, and their smallest unit is a page). ![]() (Discuss in Talk:Advanced Format#Rewrite Advanced Format to a new Sector Sizes page)Īll storage devices have a minimum storage unit that they can use. Notes: "Advanced Format" is HDD-specific.
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