HPE 8GB 1Rx8 DDR4-2666 CAS-19 RDIMM SmartMemory Kit

815097-B21 is a compact entry module: 8 GB, single-rank 1Rx8, DDR4-2666 with a CAS latency of 19. It is sold as a SmartMemory kit in registered form, and suits servers that need only a modest amount of memory per channel.

Its spare number is 850879-001, so you can search for the kit under either number and match it against a bill of materials. Use whichever matches the paperwork you have in front of you.

At 8 GB per module, a server can be built up in small steps, and failed units can be replaced without paying for more capacity than the workload needs.

It can be ordered new, refurbished or used. The warranty is 1 year or 3 years for the first two, and 90 days for used.