How to setup SSD free space

[MAdbull]

I am buying a 240 GB SSD. Now I have read that we must only use 80% of the SSD space.

Now how to use this 80%? By allocating only 80% or By allocating 100% space and then never fill the disk above 80%.

Also, should Individual partition also be filled 80% or is it a full disk thing.

 

[R_1]

on my SSD 480GB, I made 1 partition at 400GB.
the extra space will be used as replacement cells as the cells age provided you keep the free space unpartitioned

 

[SoNic67]

You don't need to leave any extra free unpartitioned space. TRIM function will take care of garbage collection over the existing free space in the active partition(s).
The 240GB SSD also have some factory over-provisioning, the actual value is 256GiB, because, after all, it's a memory.

https://www.seagate.com/tech-insights/ssd-over-provisioning-benefits-master-ti/

 

[USAFRet]

I am buying a 240 GB SSD. Now I have read that we must only use 80% of the SSD space.

Now how to use this 80%? By allocating only 80% or By allocating 100% space and then never fill the disk above 80%.

Also, should Individual partition also be filled 80% or is it a full disk thing.

Just don't fill it up too much. For a 240GB drive, just don't go over about 200GB for a safe buffer.