SSD RAID0 Help!

Fanaticjam · 19 Sep 2012 at 18:32

Hey all!

I got two of these in the post today : Samsung 256GB SSD 830

I'm setting them up in RAID as a programs drive(OS on sperate SSD); currently I'm getting these speeds:

I was hoping to gear nearer 900mb/s seq, which seems more than possible!

I'm totally new to raid and ssd/hdd benchmarking, should I be concerned about the other values?

What can I do to improve the set up?

Fanaticjam · 19 Sep 2012 at 18:34

To compare it to the same drive tested in the mega thread:

Fanaticjam · 19 Sep 2012 at 20:58

Hardware I think... ^^ Set it up via something in the bios... or similar, before windows booted etc.

Fanaticjam · 19 Sep 2012 at 21:06

Should I be using a different method of setting up raid then? Will try atto

Fanaticjam · 19 Sep 2012 at 21:13

Here is the ATTO results:

Looks better, hope it's nearer the reality than the others! I'm sure they could be going faster though, any suggestions?

Fanaticjam · 19 Sep 2012 at 21:14

wazza300 said:
No,what you did is right,hence the better scores than in ocuk test,rst drivers are better,the testing software tests uncompressionable data,atto doesn't or other way round can't remember

Mine are in raid where as the test is a single drive!

Fanaticjam · 19 Sep 2012 at 21:37

I'll check, didn't think to check firmware for some reason

Fanaticjam · 19 Sep 2012 at 21:57

That's up to date, tried to run benchmark via samsung magician and it failed for some reason (ssds split into single drives).

Fanaticjam · 19 Sep 2012 at 22:08

Drive A

Drive B

Fanaticjam · 19 Sep 2012 at 22:32

Hmm, just made it again with smaller strip size, seem to be getting better results, maybe I should use smallest possible?

Fanaticjam · 19 Sep 2012 at 22:43

Then with larger files(?)

Fanaticjam · 19 Sep 2012 at 22:55

Some progress on ATTO: this is with 32kb strip size

Fanaticjam · 19 Sep 2012 at 23:10

4KB strip size

Fanaticjam · 19 Sep 2012 at 23:19

Sequential read/write is probably most important for me if I'm just using the set up for programs, so I guess 4KB is where it is at!

Fanaticjam · 20 Sep 2012 at 11:46

Anyone got any advice on pushing these further?

Fanaticjam · 20 Sep 2012 at 14:38

I wasn't expecting double! They're supposed to hit these speeds individually and I was expecting around 950mb/s top mark for read (only care for read really -until my broadband hits 1gb/s

)

- Sequential Read: 520MB/s
- Sequential Write: 400MB/s

So going by that they seem fairly right on for seq speeds, but they seem to be struggling with the other tests, just wondering if I'm making the most out of them, want to make sure they're doing as good as they should before I start using them.

Like, should I be using strip size 4k? It's giving me best results in bench but will it affect actual performance?

Fanaticjam · 20 Sep 2012 at 16:40

They're similar but some boosts in the 16 + 32 transfer size, so looks slightly better overall...?

Fanaticjam · 20 Sep 2012 at 16:50

I'll rebench in 128k, just set it up in RAID and booted up and disk management won't work now.. :/

Fanaticjam · 20 Sep 2012 at 17:32

Set the drive up in via safe mode, disk management working there

Fanaticjam · 20 Sep 2012 at 17:49

Scores from Safe mode

P)