Intel xServe fans run at max only when connected to Netgear JGS524 switch

The fans will slowly ramp up to 11k - 16k rpm when either one (or both) of the network connections are plugged into the NETGEAR JGS524 switch. When unplugged, the fans will reduce to a normal 6k - 7k rpm. This wasn't an issue before the server was upgraded to Leopard server from Tiger server.
Swapped out the Ethernet cables, swapped out the switch with a brand new one, removed all other connections from switch--no dice. The server can be connected directly to a NETGEAR FVS318 router with no problem and the fans will run normally.
Does anyone know of any firmware issues or software issues--or any other issues--that affect Leopard server and NETGEAR JGS524?

Swapping the Netgear switch out for a different brand would be something to try. I can't do that right now, but it's on the list.
The temporary solution is to leave the connections set to 100BaseTX to keep the fans in check.
I tried to update the firmware, but it won't update to either version I have.
The machine is an xServe (Late 2006). It's firmware is at XS11.0080.B03 --which I can find no information about whatsoever.
The updater packages for EFI 1.0 and 1.1 complain: 'Alert This computer does not need this update.' Also, the 'xServe EFI Firmware Update.app' is not in the /Applications/Utilities/ folder as the firmware installation instructions on Apple's site mention. Is this an issue? Or do the EFI firmware packages contain the necessary installer?
The latest firmware for any Intel xServe is XS11.0080.B06 (EFI 1.1)--for Early 2008 models. The only previous update I can find is XS11.0080.B01 (EFI 1.0)--for Late 2006. But that's actually lower than what I have.
This site show the only info I can find about xServe EFI firmware: http://support.apple.com/kb/HT1237
Has anyone ever heard of the XS11.0080.B03 firmware? Or know how I can force my machine to update or revert the firmware?

Similar Messages

Pavilion zd7000 starts in battery mode only; runs on AC only when connected to printer by USB port

My Pavilion zd 7379ea will only start up in battery mode. AC adapter appears OK with a firm green LED, so external power supply may not be the issue here? When I'm starting up (with what's left on the battery), both the charging LED and the AC LED are constantly blinking. When turned off, the battery LED is firm, and battery appears to be charging (but which obviously is not the case). Occasionally, when computer is turned off, the AC LED is lit with a firm light.
One odd thing I noted before this happened was that the computer ran on AC only when my HP printer was connected to one of the USB ports (no battery inserted). If I disconnected the printer USB cord, the computer just died immediately; it was like the computer was powered by the printer. Later I also discovered that the same cord (where it connected to the printer) had melted from extreme overheating. I tried to update the USB drivers for each port but it didn't change things. I also tried to connect a different printer to get the computer started but it didn't work this time. I'd be extremely grateful for any comments that may solve this power supply issue (and if possible explain the stuff with the printer connection).
S/N{removed for privacy]; P/N PH989EA#AK8

Hi,
Schindi285460 wrote:
My Pavilion zd 7379ea will only start up in battery mode. AC adapter appears OK with a firm green LED, so external power supply may not be the issue here? When I'm starting up (with what's left on the battery), both the charging LED and the AC LED are constantly blinking. When turned off, the battery LED is firm, and battery appears to be charging (but which obviously is not the case). Occasionally, when computer is turned off, the AC LED is lit with a firm light.
One odd thing I noted before this happened was that the computer ran on AC only when my HP printer was connected to one of the USB ports (no battery inserted). If I disconnected the printer USB cord, the computer just died immediately; it was like the computer was powered by the printer. Later I also discovered that the same cord (where it connected to the printer) had melted from extreme overheating. I tried to update the USB drivers for each port but it didn't change things. I also tried to connect a different printer to get the computer started but it didn't work this time. I'd be extremely grateful for any comments that may solve this power supply issue (and if possible explain the stuff with the printer connection).
S/N{removed for privacy]; P/N PH989EA#AK8
You unplugged a USB device while the notebook was still booted into Windows and on?
Normally that won't cause any issues but , If you did that you may have damaged your system board's Southport chip.
USB is not a plug n' play port like SATA and eSATA are.
Here is a link to the maintenence manual for your laptop series.
Is your notebook still within warranty? By the processor components listed in the manual,I believe it is probably not.
best regards,
erico
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

HP xw8600 workstation fans run at max all the time after upgrading CPUs and memory

Hello, This is my 1st post on the forums here so I would like to thank everyone for the help ahead of time. I have an HP xw8600 workstation on which I have upgraded the CPUs and RAM recently - after the upgrade the fans seem to spin at full speed all the time (not just under load). Before the upgrading the fans were barely heard but afterwords the workstation has become very loud. This seems odd that the fans always run fast now and seems like this is not "normal" - what needs to be done to allow the fans to again be modulated by load/temp settings as designed? I looked in the temp and fan RPM settings in the BIOS and it looks like all sensors are working (including ambient temp sensor - was stating around 20 deg. C). Hardware changes:Before - CPU: 2x Intel Xeon X5460/ 3.16 GHz, 12MB L2, 1333 MHz, FSB,120WRAM: HP 32GB (16x2GB) DDR2-667 ECC FBD RAM - using RAM riser After -CPU: 2x Intel Xeon X5492/ 3.40 GHz, 12MB L2, 1600 MHz, FSB,150WRAM: HP 32GB (8x4GB) DDR2-800 ECC FBD RAM - using RAM riser NOTE: From the HP spec sheet it says that 32GB(8x4GB) is not supported by 5492... I am not sure why this is so and do not know if this has anything to do with my fans running very fast. HP 32GB(8x4GB)DDR2-800 ECC FBD RAM RISER Supported ONLY w/dual processors
5272, 5472, 5482 HP 64GB (16x4GB) DDR2-800 ECC FBD RAM Supported ONLY w/dual processors
5272, 5472, 5482 and 5492.
Acoustics waiver required. Other than the constantly loud fans the workstation works perfectly with the new setup. Please let me know if anyone has run into this issue with the fast fans and whether there is a fix for this (maybe flashing BIOS?). Any advice is greatly appreciated! [I originally posted this under Desktops section - http://h30434.www3.hp.com/t5/Desktop-Hardware/HP-xw8600-workstation-fans-run-at-max-all-the-time-after/td-p/3929746]

The xw8600 has a motherboard firmware setting that if it detects high powered processors in place it wants to see the "double tall" performance heatsink/double fans per heatsink in place. I have posted about that and how I rewired a double tall to use side by side in my xw8400 next to a single tall heatsink/fan to see how cooling was affected in that workstation. The xw8400 did not ever come with double tall performance heatsinks, to my knowledge, so its motherboard's firmware is different. In those posts I also explained how to do a simple jumper wire modification on a single tall heatsink to spoof the xw8600 into thinking it had a double tall/two fans in place over each processor. Simple and quick. So, you might want to get a couple of double talls off eBay, or try the jumper wire trick. I'd personally advise to get the double tall heatsinks given that you're running 150W max TDP processors. If I remember correctly HP wanted you to use the double talls for 120W max TDP and above. I'd feel comfortable using that trick on a set of 120 watt processors if I was not hammering them frequently, but it sounds like you're a high level power user. The all-fans-on-high can be due to a failed thermisitor in the front power cable reading ambient air temps too high, but you can check that in BIOS to see the temp and it sounds like yours is not elevated incorrectly. You can search for my experience with that in a xw6600, and it is an easy $8.00-$12.00 fix with a new cable off eBay. You'd want the longer version for the xw8600, versus the shorter one for the xw6600. Finally, maybe you've just gone too high in your total wattage use? Those risers can run hot and draw lots of power. Could you live with less ram and get rid of the risers using 4GB sticks? Sometimes those prior prohibitions regarding what is and is not supported go away with later BIOS updates. Is your BIOS the latest? Welcome, and let us know what turns out to be the problem so others can benefit too. Scott

Launchd: How to Run a Job Only When Waking?

I want to run a script when the computer wakes from sleep. I've read everything I can find about launchd and cannot find a solution.
I tried RunAtLoad, but it did not run the script when the computer woke from sleep.
Is there a parameter for launchd that will run a job only when the computer wakes from sleep?
I know other parameters like StartInterval will run any "queued" jobs when the computer wakes up, but I'm looking for a parameter that runs the job only when the computer wakes up.
Any help is appreciated.
Thanks
Brett

Sorry, but there is no capacity for that built into launchd. You might be able to hack something together (I've tried before, with some limited success), but it will be easier and more stable to use sleepwatcher.

Often I will leave my office and return to find the fan running at max speed and the computer is unresponsive

I also have a MacPro3,1 (2009) I believe and just started experiencing similar issues as described here.
I have scheduled sleep and start cycles and often I will leave my office and return to find the fan running at max speed and the computer is unresponsive or I find the computer booted in to disk utility mode.
I also often loose ethernet connectivity and have to try renewing DHCP lease several times before it will finally work.
Has anyone found solutions for this. I have looked at the console errors right before shutdown and don't really see anything fishy. Here are the last couple of lines before it looks like it shutdown.
12/4/14 10:08:37.447 PM xpcproxy[5066]: assertion failed: 13F34: xpcproxy + 3438 [D559FC96-E6B1-363A-B850-C7AC9734F210]: 0x2
12/4/14 10:08:58.145 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.193 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.235 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.269 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.301 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.662 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:09:57.998 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:09:58.142 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:10:30.000 PM kernel[0]: PM notification timeout (pid 1514, Messages)
12/4/14 10:10:31.129 PM mDNSResponder[39]: DHCPWakeTime: SCDynamicStoreCopyDHCPInfo index 0 failed CFDateRef start 0000000000000000 CFDataRef lease 0000000000000000 CFDataGetLength(lease) 0
Any help would be greatly appreciated.
<Re-Titled By Host>

Mac Pro early 2009 is Mac Pro4,1, anyway, I think you need to boot into recovery mode, launch Disk Utility, then select startup volume and run repair disk.
Xcode is the latest one, by the way?

I am using iPad1. Running v4.3 and when connecting to wifi iPad keyboard does not work. Keyboard works for everything else including typing this question out. Why would it not work when typingin password for wifi connection?

I am using iPad1. Running v4.3 and when connecting to wifi iPad keyboard does not work. Keyboard works for everything else including typing this question out. Why would it not work when typingin password for wifi connection?

Kowhai wrote:
Lots of WIFI needs a username and password to get access. I guess you're lucky and yours is set up unsecured.
Normal secured WiFi requires only a password to get access. The password is used to encrypt traffic between your device and the WiFi access point. If whatever you are using requires a username as well then it is not simply normal secured WiFi. It might be a subscription WiFi service like GOGO, ATT, etc., or a service with authentication, i.e., college campus, etc. To help you out we need to know what you are using and what connection dialog you are being presented with. You don't have exactly the same problem as the original poster. He is having a problem entering a password into the password dialog that iOS presents when one tries to connect to a normal secured WiFi network. Could you clarify exactly which WiFi service you are using.

IPod nano plays only when connected to PC

My nano is a 3rd, I think. I bought it from Apple's iPod website 2 years ago. I was using the iPod on a Harley-Davison plugged into the iPod connection of a Jenson Marine radio. I had it in a little rubbery protecting case. This pas week I had to ride in the rain. While the iPod was protected from the rain moisture built up inside the case. Now it will play only when connect to the PC.
When it is connected to the PC everything works normal. ITunes does not need to be running, only it needs to be connected via the USB. I plug the speakers directly into the iPod and it work normally. But, when I un plug it, it dies. Not only does it quit playing but none of the keys are active. It is just DEAD. The display remains as it was but not moving. Of course I have reloaded factory defaults and started all over. But it is dead if not connected via USB 04/01/09
port.
Hopefully someone can help. It was a $300 unit. I sure don't want to have to buy another.
thanks,
wayne

It sounds like a battery issue to me. When you connect it to the PC it draws power from the computer and thus it is able to function. Apparently it doesn't have enough of its own juice anymore. You probably just need a new battery.

I have one itunes account with two phones. when i phone one of the numbers both phones have started to ring, only when connected to wifi at home. How do i resolve this please?

I have one itunes account with two phones assigned to it, sons and daughters, (5s). When i phone one of the numbers both phones have started to ring, only when connected to wifi at home. The problem does not occur when not connected to wifi. How do i resolve this please? texting is fine it is only when ringing one of the numbers.

<http://support.apple.com/kb/HT6337>
"To turn off iPhone Cellular Calls on a device, go to Settings > FaceTime and turn off iPhone Cellular Calls."

Every time i go on the internet the sound starts messing up but only when connected to the internet.

1- Product name and number: Compaq CQ57 302EA 4GB
2- Operating system installed: Google Chrome, Windows 7 (was already onlaptop when got new from store)
3- Error Message: From bullgaurd saying I have a virus but have sorted the problem and there is no virus no longer.
4- Any changes made to your system before the issue occurred: I have installed games and music of the internet.
5- In the subject title, include a brief, specific description of the problem, and your product information: Compaq Laptop. Every time i go on the internet the sound starts messing up but only when connected to the internet what can i do to fix this problem?

#You need to check your home page settings if the pages open immediately everytime you start Firefox.
#Sometimes, things that you download and install will change your home page. When installing anything, be observant, be sure to look for check boxes during install of anything that allows you to un-check items and not install toolbars and/or make changes to your home page.
#Firefox can have multiple home pages separated by the "|" keyboard character.
#It sounds as though your home page setting might be: "When Firefox starts: Show my windows and tabs from last time"
#See: http://support.mozilla.com/en-US/kb/How+to+set+the+home+page
'''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.'''
Not related to your question, but...
You need to update some plug-ins:
*Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/
*Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.com/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox]

Intel Mac Mini fans run full blast even when off

Hi All,
I have gone through the forums and haven't found an answer to this one. I have an Intel Mac Mini running the latest updated Tiger that I use solely for a media center.
About a week ago, the box started running fans full blast, regardless of whether it was actually turned on or not. As soon as it is plugged in the fans blast.
Otherwise, it seems healthy, and boots normally.
The steps I have taken so far include resetting permissions, verifying the disk, and resetting the SMC in the proscribed fashion.
After this occurred, I downloaded and installed smcFanControl from Lifehacker.com. This reported fan speed of zero and Temperature of zero.
Next I opened the case and insured the fan/HD cable next to the lttle battery was securely fastened as this had been reported to cause this symptom.
What's next? The device is out of warranty and honestly, I don't want to spend any money if I can help it.
Should I take it apart further and see if the other end of the fan/HD cable has somehow worked loose?
Can anyone think of another cause besides a loose cable?
What if I completely disabled the fan? The hardest thing I ever ask it to do is run iTunes and VLC.
Any advice is greatly appreciated.
Dave

I have refurbished two G5s with LCS and screaming fans (this was avery common problem with G5 LCS macs), the red light on the motherboard could mean the CPUs need to be re-seated. This red LED light appeared on my mac after I had removed the CPUs to add new thermal paste.
If you have done all the necessary basics with no sucess here are a few things to try next.
1 - Coolant
As BDAqua mentioned above, coolant evaporates and often leaks at the 'O' rings, to check this you will need to remove the CPUs from the LCS and check for crystalisation (white rice). If you have leakage, it will be time to drain the block, add new coolant and 'O' rings. This is tricky to do but there is lots of info here and on other sites to help you.
2 - Thermal paste
Replace the thermal paste with Artic MX4.
Try the above and let is know how ou get on.

Fan running constant at 6200rpm only when connected to the Power Adaptor!

My fans are runing constant at at 6200 rpm, the temperature is around 50 degrees Celsius.
No other processes running in the background Activity Monitor shows around 2-3 usage after reboot.
I did a reset of the SMC.
Funny thing is, if the MacBook is not connected to the Power Adaptor, running with the battery, the fan is running at normal speed between 1500 and 3000 (depending on what programs i use) and has the same temperature at around 50 degrees.
I am sure that it is not the Power Adaptor, i have two, one at the office and one at home, and the MacBook is only loud, connected to the Power Adaptor.
3 Year Extended Waranty just run out 3 weeks ago...
Any hints or ideas which part could be broken and should be replaced?
Is there some sort of Power Management Unit?

I did a reset of the SMC (see my first post). Did not help.
Actually i did everthing you can do, including a fresh install (10.5.6) and not updating to 10.5.7 (some had problems with their fans updating to 10.5.7), also a Harware check, safe boot, etc. Did not help at all. Now running again with 10.5.7.
I was wondering if there is a actual hardware part i can replace.
My stoneaged Powerbook had some sort of a circuit board that managed the chareging of the battery, etc. This board could be replaced.
Or do i have to accept it, that my MacBook believes to be a helicopter now.

2009 17" Macbook Pro fans running at max speed aafter hard drive upgrade.

I recently picked up a 17" 2009 unibody MacBook Pro with Intel Core 2 Duo 2.8ghz, 4gb RAM, SuperDrive and a Samsung 1TB hard drive. The system did not come with the original hard drive and I don't have any other hard drives to test and verify that the new larger hard drive is the cause. I have tried a clean install of Snow Leopard, Lion and even Mountain Lion but no matter what my fans always running at max speed (5k+ RPM). I have looked at iStat and the temps of any of the components in the machine never show more than 42*C so the fans should never be running at full blast. Oddly enough smcFanControl shows 0* temp but fan speds for both left and right are always 5.5k+ and very noisy. Using HDD Fan Control I am able to get at least the right fan to run at a controlable speed but its silence is drowned out by the left fan that still runs on full blast. I have already done multiple SMC resets and PRAM resets with no change in the condition. These noisey fans are driving me insane! I have run every available update as well. Is there a chance that the hard drive or something elses temp not being supported or detectable by OSX is causing the fans to default to the fail safe constant high speed?!

rriggin wrote:
I will have to try that when I get can find the original discs because I have been unable to boot into the diagnostic utility with my Snow Leopard, Lion, or Mountain Lion discs. More than likely I am thinking a sensor failure because even booting into Ubuntu Live USB thumbdrive the fans still run at max.
Well your just a regular pirate. There is no Mountain Lion disks, it's not even out of Beta and avaialble to the public yet
We thought you were just mistaken but now your tech handy enough to boot a Mac off a Linux live USB, so that means you've been bad and downloaded MT Lion off a P2P network or something.
If your beta testing 10.8 your bound to secrecy and not allowed to be discussing it and posting this sort of question on this forum, but the other one.
If you know anything, OS X must "talk" to the hardware or else the default setting is to race the fans. Linux doesn't do this by default as it's designed for generic PC's which a Mac may appear to be one it's not really. Apple only supports OS X and Windows 7 on Mac's, not Linux.
Obviously something on your machine is SEVERLY messed up in hardware, likely a dead sensor, you bought a used lemon that someone didn't want to pay to get fixed.
Want to try Linux?, read this

2 Intel Xserves, both running fast and both unable to connect to Server Mon

Hey guys -
Since this is happening to two identical machines, I'm wondering if I'm just not doing something right.
I have two Xserves, both essentially functioning as metadata controllers for an Xsan volume. They don't do anything else but they both run fullblast at all times.
When I initially set them up, I disabled LOM on them. However, I can't connect to either of them using the Server Monitor. This is being done locally through a belkin KVM switch, so it's nothing to do with firewall issues. They're both on two networks, a private one (for the Xsan metadata) and a public one that operates through proxy servers. Currently, neither of them can physically connect to the internet (owing to an error in the proxy settings I'm guessing), both other machines in the local network and see them and connect to them.
They're both the same configuration, with 2GB of RAM, and operating at 10.4.8. They have dual power supplies and are running into two separate UPSs for power redundancy.
I was wondering if updating to 10.4.10 would have an effect on them, or if there was a procedure to reset the PMU (or SMU or SMC or whatever they call it these days) on them.
I've been searching these forums for similar issues, but most of them seem to be related to intel xserves which actually HAD LOM turned on, and these guys do not.
If it isn't any of these issues, how would I go about thermally recalibrating both of them?

well, I done fixed it.
After I got LOM up and running (127.0.0.1 was the way to go), I was able to see that the CPU intake fans were all blowing at a strong 16K rpm. Not a good sign, even though there were no warning lights going off and everything was reported as green and normal. Since this SAN lived in a hushrack (two servers and two RAIDs all told), I first tried to isolate airflow out of the equation by removing the back enclosure and opening the front door. Even after the heat dissipated, it ran at top speed. I ran all software updates possible, installed the OS onto an empty hard drive, and still got the same thing. I yanked one of the systems out of the rack it was in and swapped the fibre card from slot 1 to slot 2. I started it back up before returning it to the rack and, goodness me, it topped off between 5K-6K. I was so happy with myself that I tossed it back into the rack, patched it all back in, and fired it up. Boom. After about a minute of being on, it rocketed upwards straight to 16K rpm.
So now it was a matter of playing the isolation game. I pulled fibre cables, I tested the power cables in both the UPS and straight into the wall, I pulled the KVM switch out and just stood by listening for any changes.
It turned out to be two bad ethernet cables, of all things. I'd plug the cable in and the fans would start their best jet engine impression. The primary metadata controller had a bad metadata cable, and the open directory master had a bad public ethernet cable.

XServe fans running fast and loud

Good morning
I have searched the information base and tried a few suggestions without success. Hoping for another solution here.
I have an Intel based XServe (2008) (OS 10.6.8) whose fans are running faster (and therefore louder) than they have previously. This follows on the heels of a power outage (two of them actually) here at school, though the server is behind a UPS. The system identifier light is also blinking in a particular pattern - 4 flashes and a pause repeating.
The server is up and running, teachers are connecting to it just fine, the RAID is intact and online, the drives all look good according to Disk Utility. So, functionally, everything looks OK - the fans are just running faster and louder than before - noticibly louder than the other Intel XServe in the rack. The server is at the top of the enclosed rack with a space below it as it has been for the last 4 years.
This summer I took all the XServes out of the rack, opened them up, and blew the dust out of them (including a moth - truly a bug in the system), so the all the airways are clean and clear.
I have tried the suggestions I could find on this forum:
     restarted a bunch of times
     shut down and disconnect everything (including power) for a period of time
     reset the PMU/SMC or whatever it is called doing the front panel buttons with the blue lights on the lower row
     reset the PMU/SMC or whatever it is called by holding down the power button while disconnected from power
I have installed iStat Pro and the temperatures are averaging around mid- to upper- 30°C and the fans are running around 3000 RPM . The temperatures aren't signifcantly different that the other XServe, but the fans are running about twice the speed.
I had to reformat the RAID earlier this weekend and copy over the data files from backup and reassign permissions, but the server was running quietly after that was all finished. It seems to be post-powerbump that the fans became noisy.
Sorry for the long post, but I tried to include all the pertinent information. I would have tossed in photos and videos if I could have!
Any suggestions would be appreciated.
TIA
Greg

Did a little more searching about setting up LOM on the XServe and I think I have it figured out now.
I assigned a unique (different) IP address to Network 1 in the LOM dialogue box in Configure Server menu of Server Monitor since I only have Ethernet 1 enabled and linked to a switch using a unique (different) IP address for network traffic between the XServe and my clients.
I can now see (via Server Monitor remotely) that I have a dead blower in my fan array which, upon closer inspection, is also evident in the iStatPro display (one fan running at 18 RPM). Hence the blinking system identifier light and the other fans running faster and harder (and noisier).
Oddly enough, I have a replacement fan array in a box of XServe spare parts. I now have a weekend task.
Thanks for all the information to be found and the people participating in this forum. Love it.
Greg

Macbook Pro Fans Running At Full Speed When Macbook is Very Cooool

Ok, So now i'm pretty sick of the fan noise.
I've done PRAM reset, Power Management Reset to no luck.
So i decided to do some experiments.
As soon as the computer starts, Fans spool up to 6,000 and stay there. CPU Temp 42 Degrees Celsius.
Now My CPU temp does pretty well staying there. In Activity Monitor, No Processes of what so ever. Computer idles at 99% and only 1% being used by system.
So i decided to put the computer in the fridge. As soon as the temps went down 5 Degrees, to like 30 to 35 Degree Celsius, Fans idled at 2000 and as soon as the CPU temp is 40 Degrees, Fans spooled up and kept going all the way back to 6,000.
See as the temp drops on the computer, the fans do slow back down as the CPU temp drops from 40 to 35.
I called apple and the apple tech i talked to said that it seems the fan specs might be set out of whack. Meaning, the temps as which the monitor spools up the fans is set to low. He said it should be around 50 to 60 even 70 Degrees Celsius's before fans should spool up. He said the problem isn't the monitoring system since it does appear to be slowing down and speeding up the fans between 30 to 40 Degrees but it's spooling the fans up and to low of a temp than needed. He told me to take it to a Mac Genius sometime soon.
so before i do that, any apple geniuses what to take a stab on whats wrong and why it's doing this?

My fan runs continually, BUT, with several monitors watching core AND fan exhaust temps I have noticed something strange. The core indicates 28C while the exhaust jumps from 42C DOWN to -128C and then the fan races. While this is keeping the book cool as a cucumber it is driving my wife and now me up the wall. NO I don't have any hung processes. NO the CPU is not caught in a cycle requiring massive computing power. Regardless of the temp the fan runs at the 6200RPM max. Zapping PRAM and resetting the System Management will soon be followed by gravity resetting through my 2nd story apartment window. One way or another this needs to stop!

Intel xServe fans run at max only when connected to Netgear JGS524 switch

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