Free space on SSD (over provisioning) per disk or per partition?

Posted by Horst Walter on Super User See other posts from Super User or by Horst Walter
Published on 2014-08-19T10:14:05Z Indexed on 2014/08/19 10:23 UTC
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windows-7

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ssd

It is recommended to keep some percentage of an SSD free for relocation ( Is free space required on a SSD for performance? ).

However, is this rule meant per partition or per disk (whole SSD)? So, if I want to keep 20% free for performance reasons, is it acceptable if one partition is 95% filled, while another is almost empty and the overall empty disk space still is > 20.

Or does each partition has to fulfill the rule of 20% empty space?

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