HPE ProLiant Server Memory

No. A kit built for one server generation will not run in another, even where the capacity, the DDR type and the physical module all appear to match. Buy from the page for the generation you own rather than by capacity alone.

Gen10 servers shipped with both 1st and 2nd Gen Intel Xeon Scalable processors, and the two run memory at different rated speeds: DDR4-2666 kits for 1st Gen, DDR4-2933 kits for 2nd Gen. Kits for one do not work with the other, so the two sets are listed separately.

Read the processor model from iLO (Information, System Information, Processors) or from the operating system. The second digit of the model number is the generation: Silver 4110, Gold 5118 and Gold 6130 are 1st Gen; Silver 4210, Gold 5218 and Gold 6230 are 2nd Gen. The kits themselves look identical.

No. Registered and load-reduced modules cannot run together, and on DDR3 servers registered and unbuffered cannot either. Converting a server from one type to the other means replacing every module in it, not adding to what is there.

Only if every module is at the new speed. A server runs all its memory at the lowest rated speed present, so a faster kit added alongside slower modules adds capacity while the whole set keeps running at the slower rate.

On a server with more than one processor socket, some slots are wired to processors that may not be installed. On four-socket servers in particular, half the slots can sit on a board that arrives with the third and fourth processors. Populating them takes processors, not memory.

The model page. Every server listed in the index above has its own memory page with the kits HPE lists for it; the pages with a kit picker add the slot count and work out how many to buy. The generation pages are the way in when you know the generation but not the model.