NVMe Storage for High-Frequency Trading
High-frequency trading demands storage measured in microseconds, not milliseconds. Order book persistence, tick data capture, and risk system databases all require the absolute lowest latency block storage available — which is local NVMe or NVMe-oF with kernel bypass.
The Storage Challenge
- Order book state must be persisted synchronously in under 10µs — any slower adds measurable latency to the trading loop
- Tick data capture at 10M+ events/second requires sustained sequential write throughput without write stalls
- Risk calculation databases run complex queries against positions data in real time; random read latency directly impacts risk engine speed
- Market data replay for backtesting requires reading TB-scale tick databases at full NVMe read throughput
Why NVMe Storage Fits
10µs device latency for order persistence
A local NVMe SSD returns a fsync in 10–20µs. Combined with io_uring polling mode, end-to-end order persistence latency can drop below 15µs — fast enough for even the most latency-sensitive strategies.
SPDK for kernel bypass
SPDK eliminates kernel scheduling jitter by polling NVMe queues from user space. For HFT strategies where consistent sub-10µs storage latency matters, SPDK + NVMe is the standard architecture.
6+ GB/s for tick data ingest
NVMe PCIe 4.0 sustains 6 GB/s sequential writes — enough to capture full market data feeds at maximum bandwidth. SATA SSD (530 MB/s) would require 12 drives RAID-0 to match.
NVMe-oF for risk system databases
Risk engines and compliance databases don't need microsecond trading loop latency — they need consistent sub-millisecond latency under load. NVMe-oF/TCP at 25–40µs handles this tier perfectly.
Reference Architecture
| Layer | Recommendation |
|---|---|
| Trading loop persistence | Local NVMe + SPDK (kernel bypass) |
| Tick data capture | Local NVMe (sequential write) |
| Risk / compliance DB | NVMe-oF/TCP (shared, HA) |
| Backtesting / replay | NVMe-oF pool (parallel reads from multiple nodes) |
| Filesystem | O_DIRECT + io_uring; or raw block for SPDK |
Need shared block storage at NVMe speed?
NVMe over Fabrics (NVMe-oF) extends NVMe performance across standard Ethernet — delivering 25–40µs block storage to any host in your cluster. NVMe/TCP guide →
simplyblock provides production NVMe/TCP block storage for Kubernetes and bare-metal — no proprietary hardware required.
Managed PostgreSQL on NVMe
vela.run provides managed PostgreSQL on NVMe/TCP — a fit for risk system and compliance databases that require consistent sub-millisecond query latency.
vela.run →