Dell PowerEdge R630 vs R730: Bays, NVMe and Which to Buy
The Dell PowerEdge R630 is the 1U version of the R730, and choosing between them is the decision most buyers are really making. This covers what 1U costs you and one configuration that makes the R630 genuinely interesting.
What is the Dell PowerEdge R630?
A dual-socket 1U rack server on socket LGA 2011-3, supporting Intel Xeon E5-2600 v3 and v4 processors, with DDR4 memory across 24 DIMM slots and iDRAC8 remote management.
Processors, memory and management match the R730. Everything the chassis height affects is different, and that is the whole comparison.
R630 vs R730: which should I buy?
Four differences.
Drive bays. The R630 takes far fewer — commonly 8 or 10 small form factor bays, against up to 24 on the R730. If storage capacity lives in the server, this decides it.
Expansion slots. Fewer, and low-profile only. A full-height card does not fit, and a card shipped with only a full-height bracket needs the low-profile one sourced separately — our PCIe guide covers this.
Noise. 1U cools with small fast fans rather than large slow ones, which makes it noticeably louder. Not a machine for a room where people work — our noise guide covers siting.
Rack density. Twice as many machines per rack, which is the whole point where rack space is scarce or expensive.
Short version: 1U for density, 2U for drives and cards. Our form factors guide covers the wider trade-off.
The R630 NVMe configuration
The thing that makes this machine more interesting than a straight cut-down R730.
Some R630 builds provide NVMe-capable front bays, which lets a 1U machine carry very fast local storage without consuming expansion slots.
Three things to confirm before assuming yours has it.
NVMe support is per-bay, not per-chassis. A bay that physically accepts an NVMe drive may have no PCIe lanes routed to it — our backplanes guide covers why lane routing is a physical wiring decision.
NVMe drives bypass the RAID controller entirely, connecting over PCIe. That means no controller-level redundancy, so protection comes from software — our NVMe drive guide covers the implications.
NVMe bays consume lanes from the same budget as expansion slots, which is a real constraint in a 1U machine that has few slots to begin with.
Where this configuration fits: databases and virtualisation hosts needing fast local storage in minimal rack space. Where it does not: anything needing bulk capacity, since bay count is small regardless.
R630 processor and memory support
Intel Xeon E5-2600 v3 and v4 on LGA 2011-3, with the firmware caveat common to the generation: v4 needs firmware support the unit may not have. A v4 processor fits a v3 board and will not post without it, so update before installing — our E5 v4 guide covers this.
Memory is 24 DIMM slots of DDR4 registered ECC, twelve per processor. Single-processor machines populate twelve only, channels must be filled evenly, and speed can drop as slots fill.
One constraint specific to 1U: high-power processors are harder to cool, so check which processors your configuration supports rather than assuming the whole family is available. Heatsinks are 1U-specific parts.
Do I need iDRAC Enterprise on an R630?
Worth settling before purchase, and it matters more on a 1U machine than people think.
Basic iDRAC gives health monitoring. Remote console and virtual media generally need the Enterprise licence — exactly what you want when a machine will not boot.
Why it matters more here: 1U machines are frequently deployed in density, meaning many of them, frequently at colocation or remote sites. Physically attending each one is exactly what you are trying to avoid — our out-of-band guide covers this.
Check whether a licence is included on used units, since it does not always transfer.
What is missing from a used R630?
Rails, which stay in the rack. Drive carriers for empty bays. Risers — and with fewer of them in 1U, a missing riser removes a larger share of your expansion capability. Low-profile brackets for any cards. The PERC cache battery, without which write performance collapses with no error reported. And the iDRAC licence.
Our build versus buy guide covers why these small parts decide the timeline.
Frequently asked questions
What is the difference between R630 and R730?
The R630 is 1U and the R730 is 2U. Processors, memory and management match — what differs is drive bays (far fewer on the R630), expansion slots (fewer and low-profile only), noise (1U is louder) and rack density. Choose 1U for density, 2U for drives and cards.
How many drives does an R630 hold?
Commonly 8 or 10 small form factor bays depending on the chassis. Bay count is set by the backplane fitted and cannot be increased by adding drives, and a 1U chassis takes small form factor drives only.
Does the R630 support NVMe drives?
Some builds provide NVMe-capable front bays, but support is per-bay rather than per-chassis — a bay may physically accept a drive with no PCIe lanes routed to it. NVMe also bypasses the RAID controller entirely, so protection comes from software.
Can I fit a full-height card in an R630?
No. A 1U chassis takes low-profile cards only, and the low-profile bracket is its own part — a card supplied with only a full-height bracket needs the correct one sourced separately.
Is an R630 loud?
Noticeably more than a 2U machine. A 1U chassis has little internal height so it cools with small fast fans, and small fans running fast are considerably louder. It is not suitable for a room where people work.
Do I need iDRAC Enterprise on an R630?
For remote console and virtual media, yes — and it matters more here because 1U machines are frequently deployed in density at remote or colocation sites, where physically attending each one is exactly what you are trying to avoid.
Tell us how many drives you need and whether NVMe matters, and we will confirm which R630 configuration actually supports it.
