So... I've chosen LSE1010310021 MSX6025F-xxxS_LS_Ax SwitchX-2 based FDR InfiniBand 1U Switch; 36 QSFP+ ports; unmanaged switch with support of mirroring and multi SW firmware for my SX6790 and successfully bricked it. Instead of 4xQDR I got 0xFDR.
Are there any manuals how to...
Is it possible to reflash SX6790 (PSID: EMC0000000001) to make it more useful?
I'm totally ok it's unmanaged and IB only. What bothers me that it's just QDR, while I wish I could juice FDR out of it.
Made a couple of screenshots from a network manager:
Somebody has already tried to figure it...
Mine are similar to these, but there is a catch - you need to tweak them to original RPM. I'm not sure what are the failure limits of PSU controller but if you stay close to original fan RPM (23000 +-8%), you're safe. These emulators are based on 555 timer IC, whose output parameters are defined...
Didn't make photos at first, was too happy to see it not falling into fault state. Now, after ~12 hours of smooth running (w/o any traffic) in a rack, i removed PSU and took some photos.
Some notes:
1. PSU fan mounting screws are too small for Noctua holes while Nostua screws do not go through...
Small update to my previous post.
I could make PSU work with Noctua 40x20mm fan and fan emulator tuned to 23600 RPM. Left the second PSU in it's original state in case my mod would cause a fire.
I've got one of those cheap unmanaged MSX6790 for my homelab.
Almost had no problem with upgrading stock fans with noctua's 40x20mm ones. But I can't solve the puzzle with PSU fan which produces 60dBA at 23000 RPM. I've tried to solder in fan emulator, tuned to original RPM, but it didn't do...
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