24/7 Reliability in Multi-Bay RAID Arrays
Running a Synology, QNAP, or TrueNAS server requires hard drives engineered for 24/7 continuous operation, RV rotational vibration sensors, and CMR magnetic recording.
1. Always Choose CMR (Conventional Magnetic Recording)
Avoid SMR (Shingled Magnetic Recording) drives in RAID arrays. SMR drives cause severe write performance drops and RAID rebuild failures. Always specify CMR drives (e.g. WD Red Plus / Red Pro or Seagate IronWolf / IronWolf Pro).
2. Rotational Vibration (RV) Sensors
NAS-grade drives incorporate RV sensors that automatically compensate for rotational vibrations caused by neighboring drives spinning together in 4-bay to 12-bay enclosures.