Re: SSD Partitioning OP/Trim recommendations

[Robert Moskowitz <rgm@xxxxxxxxxxxxxxx>]

On 12/18/2013 04:41 AM, John Obaterspok wrote:

Hello,

I'm going to setup F20 with a new SSD disk (256gb Samsung 840 PRO) and was wondering about best practices for Over Provisioning during partitioning.

hmmm.  I just ordered a Crucial M500 256GB SSD for my new install.  I thought I would have it all to work with (currently using a 320GB HD, so that is a 64GB reduction already).  Are you implying here that you need to not use all of the SSD drive so that it has some swap around?

I chose the M500 over the 840 based on price and reviews.  The M500 uses MLC NAND compared to the 840 using TLC NAND.

According to Samsung docs (http://www.samsung.com/global/business/semiconductor/minisite/SSD/us/html/about/whitepaper05.html)

"With the introduction of the 840 Series and the reality of increasingly complex NAND fabrication processes, however, Samsung has chosen to implement a minimum amount of OP in its mainstream drives (the 840 PRO will not feature mandatory OP)."

Should I therefor make sure that I only fill up ~90% of the total disk with partitions during install?

Then what about the -discard mount option to get the drive to trim deleted data, Is this something I have to manually add? 

Is it a best practice to add this or is it better to leave it alone or use in some other way?

-- john

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