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SM951 as OS boot device information |
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Ronzer 
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Joined: 16 Sep 2015 Location: San Francisco Status: Offline Points: 18 |
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 Posted: 18 Sep 2015 at 3:30pm |
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I've never got ctrl-i to work on boot on my Z170 OC Formula, I've just used the RST tool in the UEFI to create the raid.
I was having trouble getting Windows 10 to partition the raid on install until I disabled CSM in the UEFI but then I had bad performance. I would suggest re-creating the raid in the UEFI with CSM disabled just to make sure and then try installing Windows again. I'm trying to completely wipe my SM951s to start over but there is a 99 MB EFI System Partition on one of them I can't delete, even using DISKPART.
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parsec
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Joined: 04 May 2015 Location: USA Status: Offline Points: 4996 |
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Posted: 18 Sep 2015 at 3:52pm |
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That's odd, I thought the Diskpart "clean" command would work. I wonder if that is because it is a PCIe drive.
I've found that in the Windows Custom Installation option, which you'll be using anyway I imagine, that you can delete any and all partitions in the first screen of Custom Installation. Of course, have I done that yet on a SM951... nope, but all other drives have cooperated. I've had much better luck letting the Windows installer create the partitions when using the EFI boot loader, as I've been doing now since Windows 8 was released. That includes deleting the partitions before the installation. Strange about the bad performance with CSM Disabled. That's how I use my single SM951. I'll soon see if that is what happens when all my new hardware arrives, and is running by next week. |
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TimH
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Joined: 12 Sep 2015 Location: Florida Status: Offline Points: 64 |
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Posted: 18 Sep 2015 at 11:35pm |
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I remember when the first Samsung SSDs came out with the xp941. There was a program either Toms hardware or Anantech was using to wipe them and it would actually brick them. RamCity had a instruction not to do it. The only reason I bring it up is that it was a clean wipe but I couldnt find the program name to try.
I finally got Win10 to install. I did two things differently. First I took the advice to redo the raid array and make sure CSM was off first when creating the array. I think I did that step backwards the first time. And second I download Intels new RST driver 14.06 from a link on a previous page in this thread. One of those things finally got windows to recognize the raid as an installable location. I will now download the benchmark and run it today.
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TimH
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Joined: 12 Sep 2015 Location: Florida Status: Offline Points: 64 |
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Posted: 19 Sep 2015 at 12:49am |
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Ok I install Windows 10 and updated my Firmware on the motherboard using Internet Flash in the UEFI.
I also installed the Intel LAN drivers for Windows 10 from ASROCK. That is the only update I did to Windows drivers from the clean install. I downloaded Samsung Magician. It ran but doesn't have alot of function because it doesn't recognize the SSDs as any of its 840/850 line of SSDs. I can't run system optimization from the Magician Menu. I did run the performance test on the C: BOOT drive. I got some weird numbers but here they are: Samsung Magician Seq Read:1816... Seq Write: 2946... Rand Read: 79740... Rand Write: 93844... I have no Units of measurement in the above results. It looks like the window is too small. I will try to expand it Here is CrystalMark ----------------------------------------------------------------------- CrystalDiskMark 5.0.2 x64 (C) 2007-2015 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s] * KB = 1000 bytes, KiB = 1024 bytes Sequential Read (Q= 32,T= 1) : 1754.134 MB/s Sequential Write (Q= 32,T= 1) : 2593.035 MB/s Random Read 4KiB (Q= 32,T= 1) : 367.289 MB/s [ 89670.2 IOPS] Random Write 4KiB (Q= 32,T= 1) : 235.836 MB/s [ 57577.1 IOPS] Sequential Read (T= 1) : 1681.517 MB/s Sequential Write (T= 1) : 2332.091 MB/s Random Read 4KiB (Q= 1,T= 1) : 38.133 MB/s [ 9309.8 IOPS] Random Write 4KiB (Q= 1,T= 1) : 84.097 MB/s [ 20531.5 IOPS] Test : 1024 MiB [C: 3.9% (28.0/714.9 GiB)] (x5) [Interval=5 sec] Date : 2015/09/19 0:06:18 OS : Windows 10 Professional [10.0 Build 10240] (x64) Windows10 64bit Samsung951 Raid 0 3x256mb ATTO results: 2871 and 2044 (this was the max)
Edited by TimH - 19 Sep 2015 at 1:22am |
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TimH
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Posted: 19 Sep 2015 at 1:47am |
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Asrock did a RAID 0 youtube of the INTEL NVME 750s https://www.youtube.com/watch?v=Kp3eOrbQeiA Their numbers are better. |
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TimH
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Posted: 19 Sep 2015 at 10:20am |
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One thing that just occurred to me too try when I get home. I have a nvidia 770 card that might be hogging some lanes. I'm going to remove it and try just with the onboard gpu. I'll report what I find tomorrow when I get home.
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Ronzer
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Joined: 16 Sep 2015 Location: San Francisco Status: Offline Points: 18 |
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Posted: 19 Sep 2015 at 2:33pm |
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I decided to install Windows 10 on a regular HDD and then run tests on various configurations of the M.2 SM951s on my Z170 OC Formula Baseline, RAID disabled, AHCI mode only. This is the 3 SM951s do individually:  These aren't as good as the single SM951 result here: http://www.legitreviews.com/samsung-sm951-m2-pcie-ssds-raid0-performance_161753/5 Then I enabled RAID via Intel RST but created 3 non raided drives:  You can see that simply enabling RST mode the performance slightly worse, especially the 4k write. I then created a 2 disk RAID0 (right) and left one disk alone (left):  Performance got slightly better for most of of the values on the raided drive. The non raid drive performance stayed the same as expected. I then created a single 3 disk RAID0. I initially tried to add the disk via the Windows RST application but something messed up and I had to create a new Windows image from scratch:  These numbers are close to the initial benchmark I included and nowhere near would I would expect with 3 SM951s in RAID0. The sequential read value is actually lower with a 3 drive raid vs 1 or 2. I sent these to Asrock. |
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TimH
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Posted: 19 Sep 2015 at 11:00pm |
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Do you have a video card installed?
I'm going to yank mine and retest. |
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TimH
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Posted: 20 Sep 2015 at 12:52am |
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No appreciable difference with my nvidia card removed.
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Ronzer
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Posted: 20 Sep 2015 at 11:17am |
Same, this is with the video card removed:  |
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TimH wrote: