CT4000P3PSSD8 vs HMS5C4040BLE640
Crucial CT4000P3PSSD8 (4TB) versus WD HMS5C4040BLE640 (4TB)
Verdict
For a NAS or any RAID array, the HMS5C4040BLE640 is the clear pick - it's a CMR drive, while the CT4000P3PSSD8 uses recording, which is not recommended for RAID. Only consider the CT4000P3PSSD8 for single-drive or archival use.
| CT4000P3PSSD8 | HMS5C4040BLE640 | |
|---|---|---|
| Capacity | 4 TB | 4 TB |
| Recording tech | CMR | |
| RAID / NAS safe | No | Yes |
| Class | Desktop | Enterprise |
| Spindle speed | - | 5700 RPM |
| Cache | - | 64 MB |
| Noise (idle) | - | - |
| Fill | - | Air |
| Interface | NVMe | SATA |
| Failure rate (AFR) | - | 0.49% |
| Price / TB | - | - |
Highlighted cells mark the stronger spec for a NAS build. Failure rates from Backblaze Drive Stats where available; $/TB shows once live prices are wired.