HPE ProLiant BL2x220c G7 Memory
Genuine HPE DDR3 memory for the HPE ProLiant BL2x220c G7, new and refurbished. This blade is two servers in one bay, so it carries six DIMM slots per node and twelve per blade — every capacity HPE publishes for it is per node, and filling a whole blade is two of everything.
BL2x220c G7 Memory Specifications
- Type: DDR3 PC3-10600 (DDR3-1333) Registered or Unbuffered, plus PC3L low-power Registered kits and a 16GB quad-rank PC3-8500 (DDR3-1066) Registered module
- Slots: six per node, twelve per blade — three channels per processor, six per node, and exactly one DIMM slot on each channel
- Maximum Registered: 96GB per node from six 16GB modules, or 192GB across a fitted blade
- Maximum Unbuffered: 24GB per node from six 4GB modules, or 48GB across a fitted blade
- Minimum population: two DIMMs per processor, four per node, with 40W, 60W and 80W processors; three per processor and a full six per node with 95W processors
- Protection: Advanced ECC multi-bit error protection, Mirroring and Lock-Step modes, with Online Spare supported on Xeon 5600 series processors
Six slots is one node, not one blade. A fully fitted BL2x220c G7 takes twelve DIMMs, and every HPE option kit here is a single module. Registered memory reaches 96GB per node and Unbuffered 24GB, the two cannot be mixed, and the stocked route to 96GB is six 16GB quad-rank PC3-8500 modules running at 1066MHz.
Registered or Unbuffered in a BL2x220c G7?
| Registered (RDIMM) | Unbuffered (UDIMM) | |
|---|---|---|
| Maximum per node | 96GB | 24GB |
| Maximum per blade | 192GB | 48GB |
| Module sizes listed | 2GB, 4GB, 8GB, 16GB | 1GB, 2GB, 4GB |
| Mixing with the other type | Not supported | Not supported |
Registered is the only way past 24GB in a node, and the stocked route to the 96GB ceiling is six 16GB quad-rank PC3-8500 modules, which run the bank at 1066MHz rather than 1333MHz. Unbuffered earns its place only where a node already runs it and is being topped up, since converting a node from one type to the other means replacing all six modules in it.
Choosing the Right BL2x220c G7 Memory
- Count slots per node, not per blade. Six slots is one node, a fitted blade takes twelve modules, and every HPE DDR3 option kit here is a single DIMM rather than a matched pair.
- Registered and Unbuffered cannot be mixed. Check which type a node already runs, because the wrong technology stops the node rather than simply slowing it.
- One DIMM per channel means no population step-down. Filling all six slots costs no clock speed; the rating comes from the module and the processor, and mixing DIMM speeds is allowed with the processor's limit overriding the modules.
- 95W processors force a full node. All six slots must be populated on each node when 95W parts are fitted, where 80W, 60W and 40W parts need a minimum of four.
- Low-voltage PC3L kits need Xeon 5600 series processors. Mixing 1.35V and 1.5V modules is permitted, but the whole set then runs at 1.5V and the saving is lost.
Complete Your BL2x220c G7 Build
The other part this blade takes is storage, one drive per node — see BL2x220c G7 hard drives, or the full BL2x220c G7 parts listing. The earlier double-density blades are covered under BL2x220c G6 memory and BL2x220c G5 memory, and the single-node blade of this generation under BL460c G7 memory. Background reading: understanding memory rank in HPE servers, the importance of memory speed and what CAS latency means. Everything else is under HPE parts by server model.
BL2x220c G7 Memory FAQ
What is the maximum memory in a BL2x220c G7?
96GB per server node using Registered DIMMs, which is 192GB across the blade because there are two nodes. Unbuffered memory reaches 24GB per node, or 48GB per blade.
How many memory slots does a BL2x220c G7 have?
Six per server node and twelve per blade. There are three channels per processor and six per node, with exactly one DIMM slot on each channel.
Can I mix Registered and Unbuffered memory in a BL2x220c G7?
No. HPE's population guidelines say not to mix UDIMMs with RDIMMs. Whichever type a node runs today is what an upgrade has to match, and switching means replacing all six modules in that node.
What is the minimum memory a BL2x220c G7 node needs?
Two DIMMs per processor, so four per node, with 40W, 60W and 80W processors. With 95W processors all six slots on each node must be populated.
Does filling all six slots slow the memory down?
No. Each slot is its own channel, so there is no drop for a second or third DIMM per channel. The speed you get is the module's native rating capped by what the processor supports.
Do HPE memory kits for this blade contain more than one DIMM?
No. Every DDR3 option kit listed for this server is a single DIMM, so filling one node is six kits and filling a blade is twelve.
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