We understand you have two Intel® SSD 750 2.5" drives and when both are connected, the system freezes while posting.
Based on the information you provided and the troubleshooting performed on your side, we can see that the problem is most likely related to either a power issue or BIOS configuration, this because when you test the drives as single, they both work without issues.
We checked the motherboard's manual and we understand that the two P1-NVMe ports are supported by CPU1; However, we did not find any BIOS setting to maybe discard a situation with power or bandwidth feature.
Are you only using these two NVMe* drives with the Samsung* drive or do you have more drives plugged in? If you have more connected, please let us know.
Have you contacted Supermicro* to verify this situation (A power or BIOS issue), it is clear for us that the SSDs are fine since both work separately.
We'll be waiting for your response.
Hello Nestor C
thanks for your reply.
I have only the samsung and the two Intel drives connected, correct.
I also thought it might be power related so earlier I put in a new feed from the (1200W)PSU so I had one Intel drive on one cable and the other plus the samsung on another cable. didn't do anything, so I then put each drive on a separate feed. no result.
I get the feeling this is more of a windows-issue than bios post. it's where that turqoise windows logo shows up and the spinning dots appear. either it stops there or goes on. but i don't know.
I have been emailing with supermicro support and I'm waiting for them to reply to my last update but that probably won't be til tomorrow.
i've been messing around with this all day and it's just refusing to work stable. everything is healthy but something is making it crash and act very strange.
All of a sudden a chassi fan stopped spinning and it came back on when I pulled some stuff out. So i'm thinking insufficient power supply. and especially with the whole 1 Intel connected boots fine, 2 completely freezes.
but I have a 1200W corsair, can that be possible? there's only the 1500W left in their range, don't know if anyone else makes more powerful psu's but it seems a bit crazy? maybe I should get a second one and just put all peripherals on that..
I have 2 xeon cpu's
2 noctua cpu fans,
3 chassi fans all 140mm i think.
1 samsung ssd
2 intel 750 ssd
and that's about it at the moment.
I haven't even connected the gpu yet which is a quadro p5000.
the PSU feels a bit on the warm side considering i've not really stressed it, as I can barely get in to windows.
this sucks so much, I had it running for maybe 20mins earlier today and managed to benchmark with cinebench, came out over 4000.
and I tested the seq. speed of the intel drives which looked fantastic! just really want to get this up and running.
any input, anyone?
This is a really strange situation since the PSU you have should be able to handle the server fine with both SSDs connected.
It would be nice to try a different PSU just to discard any issue with it. We would like also to ask you if you have the latest NVMe* drivers installed already? If not, here is the link.
One thing you can check with Supermicro is to verify if there is a tool to diagnose the hardware, we cannot discard as well that the U.2 ports may be the culprit but only when both drives are connected.
We'll be waiting for your response.
ehrm, you discontinued the 750's now!? ..brilliant, thanks.
anyway, i've messed around with this a heck of a lot more and it's nothing to do with power.
either it's a faulty cable, i've ordered a new one but i don't have much hope, or, judging by the number of complaints, this is all a bit hit and miss and i've ended up with crappy disks or something is conflicting in the build, in which case i'll have to replace them.
i'll keep you posted.
The Intel® SSD 750 series was discontinued on April 30th, 2017. You can check the product change notification for that.
Now, about the situation, we believe as well this could also be related to a cable; However, it is hard to say since each drive works fine individually.
Please keep us posted, it will be nice if Supermicro* could also check about this situation with other drives, just to confirm the two ports can handle this configuration.