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Hi all, I currently have 48gb ram in my HP ML350 G6 tower but I have two more sticks that came with the original ram. When I follow the HP memory configurator and install the last two sticks, the server only recognizes 40gb of ram!?!?!?!?! I powered off, unplugged and waited a few minutes and then tried unseating and reseating the ram sticks. Upon powering on the server then said it only recognized 32gb of ram! Now I’m really curious as to what is going on. Any ideas/tips/ or tricks would be greatly appreciated.

Thanks, Tom.

5 Spice ups
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Is this information shown in the bios, or the os?

When you remove the sticks again and boot without them, does it show that the rest of the ram is present (all 48gb)??

It could be that the sticks that you are adding are not matched, or they may be damaged, and it may have affected the memory controller.

Also, try resetting the bios before booting into os.

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In the OS. I’m guessing that one of the sticks is damaged because I saw that it had something on it and tried to clean it with isopropyl alcohol and it came off but that stick is still giving me problems!!! Ugh! I’ll see if after I take them out if it still reports 48gb of ram! And I’ll try resetting the bios before booting into the os IF I can catch it quickly enough!! Thanks for your help!!

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No worries. What type of substance was on the ram before you cleaned it??

It would also be prudent to note the type of ram you’re installing. The server can only support 48GB of udimm, but far more lrdimm.

See your spec sheet here:

See page 3

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You should connect to the iLO and check the system information and log there. That should tell you a bit more about the status of the server and RAM.

Were you wearing an electronic static discharge bracelet when adding and removing the new RAM? The risk of ESD is increased in the winter (ref: Electrostatic discharge and analog circuits: Preventing the undetectable disaster ).

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What size are the existing modules, what size are the new ones?

RAM has to be populated in highest order closest to the CPU and you cannot mix ram types, such as ECC/Registered/Low volate and so on, I’ve discussed this many times before.

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All of this ram came as a bunch - same size - same type/brand/model/all the same specs. I just noticed upon further inspection that the markings are still there.

ram_chip.jpg
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As @Rod-IT has said, and mentioned in earlier post, do let check the type of Ram you’re installing, it may be that it’s unbuffered (UDIMM),of which the server can only support 48GB (12 x 4GB). Check the size and speed of the modules also.

The stuff on it should come off after a good wipe down with the isopropyl you’ve got, you can also test the modules on their own, to see if they are damaged,because the server won’t boot or it will show errors. Memtest86 is also a good tool, burn to a bootale USB and see if it throws up any errors.

Keep us posted!!

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A pretty tedious job but installing one stick at a time will help you determine if its the DIMM slots or RAM.

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What’s a wrist strap?

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Wrist strap for ESD. You can find them on any good computer eshop.

E.g. Amazon.co.uk

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Sorry yes - the ram is the same type/amount/speed as I received it all at the same time. I didn’t do the BIOS reset because the link didn’t work. So I did the last suggestion - tried the sticks one by one. I shut it down, unplugged it, waited a few minutes and strapped up :slight_smile: then figured I’d start with the first stick on the right in the lower position. So I “switched” it with the stick I suspected was “bad” and powered it all up and up to 48mb ram it read!! Being the optimistic person I am, I unplugged it, waited for the power to dissipate, installed all 3 sticks leaving stick 1 where it was and installing the other two in the chart positions I remembered from the other day, booted it up and saw 72gb ram!! Buttoned it all up, put it under the table in it’s position behind another server and wired it all up, went to power it on and crickets… Hmmmmmmmm. I didn’t like the thickness and quality of the power cords that I was using so I went through my bin, picked the heavy duty stuff and replaced it, power it on and …crickets again!!! I’m like !!! Any ideas?

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:slight_smile: Late April Fools Day Joke mate. Sorry.

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I have Memtest86 along with a TON of other utilities on a bootable jump drive that comes in quite handy. I was just hoping I wasn’t going to have to go THAT far! :slight_smile: