[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: SSDs have extra "unused" space???

Holger Levsen <holger@layer-acht.org> wrote:
> On Montag, 20. Januar 2014, Kevin Chadwick wrote:

>> As long as it is a modern SSD (years) or one of the old ones one with
>> a sandforce controller (OpenBSD dev let me know about that) then it
>> has a good 20% extra space above it's listed gigabytes reserved
>> unusable for wear levelling meaning this is a non issue even when
>> full?

> wait, what? Do you have any vendor statements to support this 20%
> extra space? 

Have a look at this article from Anandtech.com:

| The [Intel SSD DC] S3700 has 264GiB of NAND on-board but only exposes 186GiB
| of it (200GB advertised capacity) as user accessible storage, the rest is
| used as spare area to improve performance, consistency and endurance.

There are numbers for other SSDs in that article.


Sigmentation fault. Core dumped.

Reply to: