NAS hard drives are built for network-attached storage, with model-specific workload ratings, recording technology, vibration handling and supported bay counts.
Match capacity, CMR or SMR behaviour, interface, sector format, firmware features and the NAS vendor compatibility list before building or expanding an array.
CMR drives provide predictable sustained and random-write behaviour for many RAID and ZFS workloads. Device-managed SMR can suit lighter use but may rebuild or write differently.
The enclosure maker validates particular drive models, capacities and firmware combinations. A standard SATA connector alone does not establish support.
Home, small-business and pro drive families carry different annual workload and multi-bay positioning. Choose from actual users and data activity rather than capacity only.
RAID can maintain availability after selected drive failures but does not stop deletion, malware, fire or array-wide corruption. Keep an independent copy in another location.
Several spinning drives create cumulative sound and heat inside an enclosure. NAS-specific vibration control and adequate airflow matter as bay count rises.
