Intel Gen2 RST trim support + 144gb/128gb partitioned for performance increase

[idata]

http://cafe.naver.com/intelssd.cafe

The link above is for semi-official intel ssd online community in Korea, it is managed by a korean worker in Intel Company Korea.

This guy had a meeting with an engineer from Intel USA.

during the presentation, he saw that a table confirming that

when 160Gb G2 is partioned as 160gb/144gb/128gb for usable space and leaving the rest unpartitioned,

there was performance gain in 4k: 15/42/53, I personally assume that this is for 4k read.

and the engineer also mentioned that RST 9.6 or above supports trim.

I will update this thread once i confirm on these things with him.

[idata]

Increasing endurance of your ssd.

http://intelstudios.edgesuite.net/idf/2009/sf/aep/IDF_2009_MEMS003/f.htm http://intelstudios.edgesuite.net/idf/2009/sf/aep/IDF_2009_MEMS003/f.htm

Understanding performance of ssd's in the enterprise

http://intelstudios.edgesuite.net/idf/2009/sf/aep/IDF_2009_MEMS002/f.htm http://intelstudios.edgesuite.net/idf/2009/sf/aep/IDF_2009_MEMS002/f.htm

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Raidman wrote:

So the final question is exactly how to do it properly.

I know how to set the partition size smaller but what steps are needed for the ATA8-ACS features to be implemented.

I'm assuming there's a program one uses to secure erase the drive but what does "SET MAX ADDRESS" mean??

Sharing any knowledge of how to do this and any links to necessary programs would be extremely helpful.

Same questions here...

We could secure erase and make a smaller partiton, but maybe it's better to use the protected area and set a max address...

How to do it properly ?

[idata]

Acording to this post (read it for important information):

http://forum.notebookreview.com/showpost.php?s=a71146ad9e0db356957be8010ef435b4&p=5355762&postcount=... http://forum.notebookreview.com/showpost.php?s=a71146ad9e0db356957be8010ef435b4&p=5355762&postcount=...

This program can SET MAX ADDRESS and change the drive size:

http://www.hdat2.com/ http://www.hdat2.com/

Note: I never tried it before.

Wikipedia entry about the "host protected area" explains how it works, and makes reference to HDAT2 and other tools:

http://en.wikipedia.org/wiki/Host_Protected_Area http://en.wikipedia.org/wiki/Host_Protected_Area

This looks like those old DOS Hard Disk tools were you could set the HD maxsize if your bios didn't recognized it, don't know if it's the same ATA command.

[idata]

Mr. Wolf:

Unless you're running some sort of server-class workload, you don't need to partition for more endurance.

Your usage model:

2.27 TB / 135 days = 17.2 GB / day

The spec is 20GB / day for the lifetime of the product, which provides plenty of guardband to when the Nand actually wears out.

To put things in perspective, assuming all writes were sequential and ignoring "write amplication":

2.27 TB / 160GB = 14.5 "cycles" to the Nand in 4.5 months

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^ Can you give any insights into perfromance gains by reducing the partition size?