See whether RAID 0 is worth it for a flight simulator PC, its real effect on FPS, load times and stutters, and the safer SSD setup to use.
For most flight-simulator PCs, RAID 0 is not worth using. It can raise sequential read and write speeds, but it rarely improves frame rates and often makes little difference to loading or scenery streaming. A single, adequately sized NVMe SSD is simpler, while RAID 0 makes the entire array dependent on every drive.
RAID 0 stripes data across two or more drives to combine their capacity and throughput; it provides no redundancy. In Microsoft Flight Simulator, X-Plane, Prepar3D and FSX, a mistake we see constantly is treating a much larger synthetic benchmark result as an equivalent gain inside the simulator.
Does RAID 0 increase flight simulator FPS?
RAID 0 does not normally increase average FPS because flight simulation is usually limited by the CPU, GPU, memory or simulator engine rather than storage throughput. Once assets are loaded, a faster array does not make the CPU calculate flight systems or scenery draw calls more quickly.
Storage can affect frame pacing when the simulator must fetch assets during flight. If those pauses come from a mechanical hard disk, moving to one SSD usually provides the crucial latency improvement; striping two hard disks still leaves both with mechanical seek delays. FSX users can see why SSD latency matters more than HDD transfer speed during loading.
Insufficient RAM or VRAM can also force more data through storage. A faster volume may reduce the penalty, but RAID 0 is treating the symptom rather than correcting the memory shortage.
What performance can RAID 0 actually improve?
RAID 0 can improve sustained local transfers, package installation, file copying and some loading operations, but the simulator must issue enough parallel disk work to use that bandwidth.
| Storage setup | Likely simulator result | Main drawback |
|---|---|---|
| Two HDDs in RAID 0 | Faster large-file transfers, but mechanical seek latency remains | Any member failure loses the array; one SSD is usually a better upgrade |
| Two SATA SSDs in RAID 0 | Higher sustained throughput, with inconsistent loading gains | Controller complexity and a larger failure domain |
| Two NVMe SSDs in RAID 0 | Very high benchmark speeds, usually with little change in normal flying | Possible lane sharing, thermal throttling and driver dependency |
| One NVMe SSD | Fast loading and low latency without array overhead | Capacity and performance are limited to that drive |
Flight-simulator packages may contain compressed archives, thousands of small files or assets that require CPU processing after being read. RAID 0 cannot accelerate decompression, scenery construction, shader compilation or online delivery.
Can RAID 0 fix stutters or scenery pop-in?
RAID 0 fixes stutters or scenery pop-in only when the existing storage is demonstrably saturated at the moment of the pause. High disk throughput by itself is not proof of a bottleneck.
How can I tell if storage is the bottleneck?
A repeatable flight and operating-system performance data can separate a storage problem from a tempting but irrelevant benchmark result.
- Repeat the same workload: use the same aircraft, airport, scenery and add-ons. Ignore one-off results immediately after a simulator or graphics update, when caches or shaders may be rebuilt.
- Watch the drive: check active time, response time and transfer rate in Windows Task Manager while the pause occurs. Sustained activity near the drive's limit that coincides with each pause is meaningful; an occasional spike is not.
- Check the other limits: compare CPU, GPU, RAM, VRAM and network activity. Our guide to isolating the cause of simulator freezes and stutters covers those competing bottlenecks.
- Separate local and streamed scenery: online scenery can be limited by the connection, cache, remote delivery or CPU processing. For local scenery, storage is only one possibility; see our explanation of storage, memory and rendering causes of scenery pop-in.
- Test one fast SSD first: if the simulator supports selectable library locations, move a representative scenery or package set to a single SSD and repeat the test before building an array.
What are the risks of RAID 0?
RAID 0 increases both the chance and the consequence of volume loss because every member must remain healthy for the complete array to work.
- No redundancy: failure of one SSD or HDD normally makes the whole volume unreadable. RAID 0 is not a backup.
- Harder recovery: motherboard changes, controller failure, driver problems or firmware configuration changes can complicate access to an otherwise healthy array.
- Reduced visibility: some RAID implementations make individual-drive health information or firmware maintenance harder to access.
- Shared resources: installing multiple M.2 drives can disable certain SATA ports or divide PCIe lanes on some motherboards. The board manual determines the actual behaviour.
- Longer reinstalls: simulator packages and freeware may be replaceable, but large scenery libraries, custom configurations and locally modified files can take considerable time to restore.
Keep irreplaceable files on a separate physical backup device. A second partition on the same array offers no protection from array failure.
When is RAID 0 worth using?
RAID 0 is defensible only for a measured high-throughput workload where losing the volume is acceptable and a tested backup exists.
- The existing drive is proven to be the limiting component during sustained local scenery reads, file processing or simultaneous recording.
- The volume contains scratch data, replaceable simulator packages or another workload that can be recreated without serious loss.
- The motherboard provides enough independent bandwidth and cooling for every drive without compromising the GPU or other storage.
- Matched drives are available; mixing capacities or very different performance classes can waste space and make behaviour less predictable.
Even in those cases, compare real loading times and frame-time behaviour rather than relying on sequential benchmark figures.
What storage setup should a flight simulator PC use instead?
A single NVMe SSD is the best default for Windows, the simulator and frequently used scenery, with additional SSDs kept as independent volumes when more capacity is needed.
- Use one primary SSD: choose enough capacity for the simulator, add-ons, rolling caches where applicable and a healthy amount of free space.
- Add independent storage for capacity: a second SSD can hold supported scenery or package libraries without making the first drive dependent on it. Separate drives do not automatically increase FPS.
- Keep a real backup: copy custom aircraft, scenery, configuration files and other irreplaceable material to a separate device.
- Plan around the simulator: MSFS users with both releases can follow our practical guidance for arranging MSFS 2020 and 2024 across multiple drives rather than combining disks into one fragile array.
Our recommendation: use RAID 0 only for a backed-up, disposable volume after proving that storage throughput is the problem. For an ordinary flight simulator PC, one good NVMe SSD plus a second independent drive provides nearly all the practical benefit with less risk and complexity.