Do I really need to overprovision?

[Berryracer]

I have a RAID 0 array ofr my 2x 2TB Samsung 960 PRO m.2 NVMe SSDs......

I have partitioned the array as C: 200 GB and D: 3TB

So there is 541GB unallocated space out of the entire array

I am about to format today but was wondering, shall I still leave the unallocated 541GB space or if I partition the entire RAID 0 Array, as in, give the D: partition the full space, would it be the same effect as over-provisioning or is it still better to leave the unpartitioned space?

Mind you, out of the 3TB partition on D: there is 2.5 TB Free Disk space

 

[UsandThem]

It's not necessary on modern drives, but some still prefer to do it manually. Modern controllers treat free space as an OP:

https://forums.anandtech.com/threads/a-question-about-overprovisioning-in-ssds.2497601/

 

[corkyg]

The operative word is "need." In view of that, my response is "no."

 

[Elixer]

The drives are already OP, so, unless you are going to be running tons of gigabytes of data everyday, it wouldn't be of value to do so.
On the other hand, if you are going to be writing insane amounts of data to the drive, then, yeah, increasing OP will help in that circumstance.