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  1. K

    Brocade ICX Series (cheap & powerful 10gbE/40gbE switching)

    The stack unit 1 chassis info: Power supply 1 present, status failed Power Supply 1 Fan has failed Power supply 2 (AC - PoE) present, status ok Model Number: 23-0000142-02 Serial Number: A9W Firmware Ver: C Power supply 2 Fan Air Flow Direction: Front to Back Fan...
  2. K

    amd epyc rome on h122ssl-c random crashes

    Sorry, can't check right now. My system is in production and I don't have downtime scheduled at the moment.
  3. K

    amd epyc rome on h122ssl-c random crashes

    In my case it was a defective CPU. Installed a new 7763 (AMD distributor sourced, not China) and works like a charm.
  4. K

    Epyc 75f3 cooling choice?

    I use an A38 on a 7763 and it's fine but noisy when under full load. 4U-M definitely would be a better choice but I'd rather upgrade to water than another air cooler.
  5. K

    Brocade ICX Series (cheap & powerful 10gbE/40gbE switching)

    Is there any reasonable support for Infrastructure-as-Code (e.g. NAPALM) for Fastiron devices?
  6. K

    MCIO 8i SFF-TA-1016 vs SFF-8654 8i - are they mechanically and electrically interchangeable function-wise? (with loss of bandwidth)

    PCIe gen 5 is a 32GT/s NRZ protocol. The fundamental frequency is 16GHz. (PCIe gen 6 is a 64GT/s PAM4 protocol, which also has a fundamental frequency of 16GHz.) 75cm is doable with good PCB material and good cables without retimer. See...
  7. K

    amd epyc rome on h122ssl-c random crashes

    Can confirm it is *not* the SSD in my case. Removed all SSDs (M.2 and 2.5") and it still crashes (in different ways, from PSOD to instant reset) when booting ESXi via HTTP boot.
  8. K

    amd epyc rome on h122ssl-c random crashes

    I'm running Samsung PM9A3 (2x 2.5" 7.68TB and M.2 960GB) so that's possibly the problem for me as well.
  9. K

    amd epyc rome on h122ssl-c random crashes

    Dealing with some weird resets with my new (H12SSL-NT brand new, used China EPYC 7642) system too. Ran fine all day yesterday, turned it off for the night, resets before ESXi finishes booting. (In fact sometimes it just resets during PCI enumeration postcode 94) E: I noticed that a ping to the...
  10. K

    EPYC 7002/7003 MB choice

    Interesting. I tried with ESXi 8 and it doesn't detect them as hotpluggable at all. What chassis/backplane are you using?
  11. K

    EPYC 7002/7003 MB choice

    I went ahead with the H12SSL-NT regardless and yeah, hot swap doesn't work at all (with ESXi). Doesn't even detect an unplugged PCIe device.
  12. K

    Any reason for SAS over SATA in bulk storage (xxTB) HDDs

    I've already decided to continue with SATA and buy an additional 2 18TB SATA HC550s. Then I'll migrate the data off the existing 2 18TBs and turn it into a RAID10 ZFS pool. One spec that changed is that I no longer use 16-bay direct attach but a 24-bay expander backplane (still effectively 16...
  13. K

    Epyc 7742 (Dell only) $655

    Yeah, decent price. I paid $515 shipped for a Chinese 7642 recently.
  14. K

    EPYC 7002/7003 MB choice

    Ok, this thing is driving me nuts in my research: NVMe hotplug compatibility. From what I understand, there's a SMbus header on my NVMe backplane and some of the motherboards for NVMe hotplug support, e.g. S8030: J44 (page 21) https://i.kane.cx/sfdtPL MZ32-AR0: BP_1 (page 24)...
  15. K

    EPYC 7002/7003 MB choice

    The case I'm using has an expander backplane, so HBA is required.
  16. K

    EPYC 7002/7003 MB choice

    Yep, this is one of the strongest contenders. S8030: $300 used from CN; good docs, lowest free slot count (2x16 dual-width) after 8xNVMe, 40/100G NIC, HBA. Unclear what the differences between the two versions MOA and OOY are (seems like MOA is gen4 M.2 and some "pin definitions modified" on...
  17. K

    EPYC 7002/7003 MB choice

    I really don't like the slot arrangement on the Gigabyte board. Tyan S8030 is about equally expensive from China right now btw.
  18. K

    EPYC 7002/7003 MB choice

    Hmm, ok. I'll take a look. I don't see it cheap outside of China exports but I'm already importing a China EPYC CPU so why not.
  19. K

    EPYC 7002/7003 MB choice

    Ah, thanks. Ok, that makes it a possible consideration.
  20. K

    EPYC 7002/7003 MB choice

    OCP, M.2, two expansion slots, and most importantly all SlimSAS ports are only gen3.