true

It is not a hard drive. The 500hz/1Khz alternating tone isn't typical of a hard drive and certainly shouldn't be that loud. In addition, removing the jumper for the speaker while it is beeping confirms that the system is causing the beeping. I've not heard the beeps since I removed the jumper about a month ago. It's never been this long. The motherboard is the source of the beeping.

I was sent the BIOS files currently listed on SuperMicro's site at least a couple of weeks before they went live. They do not solve the problem. No mixing is going on. I've actually tried using NO fan headers and the system still beeps. I've since pulled the jumper for the internal speaker though. I have no speaker but I have sanity...

No. I could get other fans to connect to the headers... just don't have any spare 4pin... I have taken this PSU out and hooked it up to my scope and ran it under load - voltages look great, noise well under control. It is a new Corsair TX750v2. I've also tested another PSU in the system and it did the same thing. I've also logged the output of "ipmitool sensor" every few seconds and logged hi-lo for voltages over a couple days - they are all well in spec. I just checked the fail headers. First the Power Fail: 0v. The Overheat / Fan Fail... 3.16v. The manual says flashing is fan, solid is overheat... so it's likely the BIOS thinks the machine is overheating? ---- The alarm has been currently going off for over 24 hours now (one of the longest ones). Just as a test I reset the BMC using the web interface, and the beeping continued. The previous "failed" fans now show the "N/A" they used to again. The beeping is likely caused by a BIOS routine. I'm seriously considering disassembling the BIOS and finding the routine for these beeps and nop'ing them out. There is no reason for a machine that is 31c ambient under load, with no malfunctions whatsoever, to be beeping like this. As SuperMicro doesn't care, what other choice do I have? (ACTUALLY, reading the manual, I missed something: jumping pins 3 and 4 of the speaker header will ENABLE the onboard speaker, which is the default. I've removed this jumper. Not ideal (as other beeps won't come through) but good enough for now...) coretemp-isa-0000 Adapter: ISA adapter Core 0: +23.0 C (high = +83.0 C, crit = +99.0 C) Core 1: +22.0 C (high = +83.0 C, crit = +99.0 C) Core 2: +28.0 C (high = +83.0 C, crit = +99.0 C) Core 3: +21.0 C (high = +83.0 C, crit = +99.0 C) w83627dhg-isa-0a10 Adapter: ISA adapter Vcore: +0.85 V (min = +0.60 V, max = +1.49 V) in1: +1.85 V (min = +1.62 V, max = +1.99 V) AVCC: +3.31 V (min = +2.98 V, max = +3.63 V) +3.3V: +3.31 V (min = +2.98 V, max = +3.63 V) in4: +1.54 V (min = +0.00 V, max = +1.65 V) in5: +1.26 V (min = +1.13 V, max = +0.30 V) ALARM in6: +1.46 V (min = +1.42 V, max = +0.00 V) ALARM 3VSB: +3.28 V (min = +2.98 V, max = +3.63 V) Vbat: +3.12 V (min = +2.70 V, max = +3.30 V) fan1: 0 RPM (min = 10546 RPM, div = 128) ALARM fan2: 2136 RPM (min = 0 RPM, div = ALARM fan3: 0 RPM (min = 10546 RPM, div = 128) ALARM fan4: 0 RPM (min = 753 RPM, div = 128) ALARM fan5: 0 RPM (min = 10546 RPM, div = 128) ALARM temp1: +30.0 C (high = +60.0 C, hyst = +55.0 C) sensor = thermistor temp2: +28.5 C (high = +81.0 C, hyst = +0.0 C) ALARM sensor = thermistor temp3: +26.0 C (high = +0.0 C, hyst = +70.0 C) sensor = thermistor cpu0_vid: +1.300 V System Temp | 26.000 | degrees C | ok | -9.000 | -7.000 | -5.000 | 75.000 | 77.000 | 79.000 CPU Temp | 0x0 | discrete | 0x0000| na | na | na | na | na | na FAN 1 | 2065.000 | RPM | ok | 215.000 | 400.000 | 585.000 | 29260.000 | 29815.000 | 30370.000 FAN 2 | na | RPM | na | na | na | na | na | na | na FAN 3 | na | RPM | na | na | na | na | na | na | na FAN 4 | na | RPM | na | na | na | na | na | na | na FAN 5 | na | RPM | na | na | na | na | na | na | na CPU Vcore | 0.848 | Volts | ok | 0.640 | 0.664 | 0.688 | 1.344 | 1.408 | 1.472 +3.3VCC | 3.312 | Volts | ok | 2.816 | 2.880 | 2.944 | 3.584 | 3.648 | 3.712 +12 V | 12.243 | Volts | ok | 10.494 | 10.600 | 10.706 | 13.091 | 13.197 | 13.303 CPU DIMM | 1.544 | Volts | ok | 1.152 | 1.216 | 1.280 | 1.760 | 1.776 | 1.792 +5 V | 5.056 | Volts | ok | 4.096 | 4.320 | 4.576 | 5.344 | 5.600 | 5.632 -12 V | -12.098 | Volts | ok | -13.844 | -13.650 | -13.456 | -10.934 | -10.740 | -10.546 VBAT | 3.120 | Volts | ok | 2.816 | 2.880 | 2.944 | 3.584 | 3.648 | 3.712 +3.3VSB | 3.280 | Volts | ok | 2.816 | 2.880 | 2.944 | 3.584 | 3.648 | 3.712 AVCC | 3.312 | Volts | ok | 2.816 | 2.880 | 2.944 | 3.584 | 3.648 | 3.712 Chassis Intru | 0x0 | discrete | 0x0000| na | na | na | na | na | na PS Status | 0x1 | discrete | 0x01ff| na | na | na | na | na | na

Changing fan speed settings / disabling any auto control is one of the first things I tried. My installation only uses a mainboard header for the CPU fan - all other fans are directly powered by the PSU. I have tried disabling control of this fan and having it run 100%; the machine still beeps whenever it feels like it. The BMC never reports any trouble with the fan that is actually installed, even when automatic control is in use. The status of the other disconnected headers will sporadically change from N/A to 0rpm failure, but from my logging (using output of "ipmitool sensor" every minute and emailing when disconnected fan header status breaks) there is no correlation between this appearance of 0rpm failures and beeping. If changing fan speeds actually solves the problem for others, feedback would be helpful.

No responses to this? Supermicro doesn't seem to care about my support ticket anymore. They referred me to the vendor. The vendor referred me to Supermicro. My beeping continues. It's highly annoying. Re: -65C system temp - this is reported sometimes and has nothing to do with any other issues.

I've had a support ticket open since the beginning of the month with SuperMicro for this issue with my X8SI6-F. So far, there is no resolution for the issue. I've had the beeping since I first put this board into service about 3 months ago. I was sent a beta BIOS but it did not resolve the issue. I do not use unRAID. This issue doesn't seem to be related to unRAID or software components used with unRAID. I've sent a link to this thread to SuperMicro so they can see that other owners of this board family are experiencing issues. Can those affected post machine specs? Board Model and BIOS Revision: CPU Model: Memory Manufacturer / Size / Count: OS: Using onboard fans? Type (3-pin, 4-pin)? Count?: Using Intel SATA?: Using onboard LSI SAS (X8SI6)?: Using PCI-e SAS? Which card?: Using a SAS expander? Which one?: