786595-B23

HPE 786595-B23 is a ProLiant XL450 Server. The part number is the reliable way to identify it, because accessories of this kind are often visually identical across generations that are not interchangeable.

What to check before you buy. Three things decide whether a server will suit the job. The generation, because the processors, memory and controllers that fit one generation generally do not fit the next even where the chassis looks identical. The drive configuration, because a chassis built for small form factor disks cannot take large form factor ones without a different cage and backplane. And how it is specified to be populated, since a second processor usually needs its own heatsink and may enable memory slots that are otherwise unusable. It is also worth asking what is physically included: rails, bezel, drive carriers and the remote management licence are all commonly sold separately from the chassis.

How we supply it. Supplied new where available, otherwise as tested stock with warranty, subject to availability. Tell us the chassis or model it has to work with and we will confirm the part before anything ships. Quotes go out the same or next working day.

786595-B23 is an HPE ProLiant XL450 Gen9. The detail held for this part number on our side is the platform only, so the exact processor, memory and drive configuration for this SKU needs confirming before you order — what follows describes the platform rather than a specific build.

The first thing to know is that an XL450 Gen9 is not a standalone server. It is a server node that slots into an HPE Apollo 4500 system chassis, and the chassis supplies the power, the cooling and the drive enclosure. On its own it will not run, so if you are replacing or adding a node you already have the chassis, and if you are starting from nothing then the chassis is the part to specify first.

That architecture exists for the same reason the Apollo line does: density. Putting the shared infrastructure in the chassis and the compute in removable nodes means more storage and more processing in the same floor space than discrete servers would give you, which is why these turn up in scale-out storage, big data and analytics clusters rather than in general-purpose server rooms.

Each node is a two-socket machine taking Intel Xeon E5-2600 v3 or v4 processors, with 16 DIMM slots when both processors are fitted and 8 when only one is. Maximum memory is 512 GB with RDIMMs or 1 TB with LRDIMMs, and the two module types cannot be mixed. As ever on a two-socket Gen9 platform, the second processor is not only about cores — it is what brings the other eight memory slots into play.

Because the node and the chassis are specified separately, the question we would want to ask before quoting is which Apollo 4500 chassis this is going into, and what is already in it. Drive population, controller choice and the firmware level of the existing nodes all matter when a node is being added to a running system.

Green Code Technologies supplies HPE Apollo and ProLiant servers from stock in the UK. Tell us which chassis this node is for and we will confirm the configuration of this part number, check it against what you already have, and price it before you order.