Over-provisioning modern SSDs with RAID

hgl-it

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Hi all,

I'm building a new physical system with 14 x SSDs in RAID10.

It's been a while since I fiddled with SSDs in a corporate setup, and I guess the tech has moved quickly.

Originally, when SSDs were new, "over-provisioning" was a big thing - where 10-20% of the disk (or virtual disk in this case) is left unpartitioned to allow the system/controller to use the space for moving data blocks around (AFAIK).

So, is this approach still required and practiced? Do I still need to do it on business-grade hardware?

The OS will be RHEL and the filesystem will be Ext4.

Thank you!

Elliot
 

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