Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have DL380 G5 server with 12GB(2GB stick each) of RAM and I want to add 16 GB (4Rx4)Can I do this or I need to have RAM with same all 4GB sticks or all 2GB.

P.S Can use 4GB and 2GB sticks together. ?

share|improve this question

closed as too localized by Scott Pack, rnxrx, Michael Hampton, Magellan, mulaz Oct 15 '12 at 12:23

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

HP servers usually are very picky about the exact type and combinations of RAM you can use.
Only certain combinations are supported and you have to put the right size in the right slot.

If I recall correctly a DL380-G5 has 4 banks of 2 DIMM's each. They need DDR2-667 registered. ECC is optional (but don't pin me on that). Each bank needs to have 2 identical DIMM's. These can be 1, 2 and 4 GB. (Not sure if 8 is supported.)

All the info you need you can get from the HP support pages on A brief summary of this info is listed on the inside of the top-cover of the server as well.

share|improve this answer
Much better than my answer! – boburob Sep 25 '12 at 9:00
So can I do this 1A - 4GB 2C - 2GB 3A - 4GB 4C - 2GB 5B - 4GB 6D - 2GB 7B - 4GB – Rehan Sep 25 '12 at 10:05

This memory has to be 'Fully-Buffered' memory as opposed to the Registered/Unregistered memory Tonny mentions, so make sure you get the right type, you don't give us a lot of details about the memory you have but I'm not sure what you have will work sorry.

That said you can use 1Gb, 2GB, 4GB and 8GB DIMMS in the same box but Tonny is right, you need the same DIMMs in each 'alphabetical channel' - i.e. all in the 'A' slots have to match, all in the 'B' slots must too etc.

Take a look at THIS section of the quickspecs.

share|improve this answer
You're right. They have to be fully buffered. I just pulled some RAM from a G5 to check. Some weeks ago we replaced a couple of G5 based VMWare clusters with G8's so I have something to play with :-) – Tonny Sep 25 '12 at 9:37
We just got rid of all of our G5's so it was close in my mind, oh and don't forget, they're Gen8's - G8 means something very rude to the Japanese ;) – Chopper3 Sep 25 '12 at 9:39
Really ? Now I'm curious. Must ask my Japanese colleague about that. – Tonny Sep 25 '12 at 10:01
Pretty much their equivalent to our 'C-word'. Though I'm told they're sticking with 'Gen', certainly the G9 kit we've seen has 'Gen9' written on it. – Chopper3 Sep 25 '12 at 10:02
Just checked. G8 is apparently typical SMS/Tweet slang for a part of the male anatomy. It appears in both Japanese and Mandarin Chinese. – Tonny Sep 25 '12 at 10:27

In general you can mix the size of the RAM but it is not advisable to do so as you could possibly run into some problems further down the line, with reliability, speed, etc.

I would recommend looking on Crucial and making sure the RAM you buy also matches the motherboard on your server.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.