1. SATA
The most common interface for home and SMB storage. Tops out at ~550 MB/s — more than sufficient for HDDs and most everyday SSDs.
Most common interface
Up to 6 Gb/s (~550 MB/s)
Very affordable drives
Perfect for home NAS
2. SAS
Enterprise-grade interface with dual-port support and higher reliability. Requires expensive HBA controllers — overkill for home use.
Dual-port redundancy
Higher reliability ratings
Expensive HBA required
Not for home use
3. NVMe
PCIe-based protocol with speeds up to 7,000 MB/s on Gen 4. Ideal for OS drives, gaming, and video editing. Much higher cost per TB than SATA.
Gen 4: up to 7,000 MB/s
Ideal for OS & gaming
Higher cost per TB
Not for bulk storage
Quick Decision Guide
| Use Case | Recommended Interface |
|---|---|
| Home PC | SATA or NVMe |
| Gaming | NVMe |
| NAS | SATA (CMR HDD) |
| Video Editing | NVMe |
| Enterprise Server | SAS |
| Cold Storage | SATA HDD |
Frequently Asked Questions
What is faster, SATA or NVMe?
NVMe is significantly faster. SATA tops out at ~550 MB/s. NVMe Gen 4 reaches ~7,000 MB/s — roughly 12x faster for sequential reads.
Do I need SAS for a home NAS?
No. SAS requires expensive HBAs and cabling. For home and SMB NAS, SATA CMR drives are the correct choice.
Can I use NVMe in a NAS?
Yes, but usually only for caching. Most NAS enclosures support M.2 NVMe for SSD caching alongside SATA HDDs for bulk storage.
Is SATA becoming obsolete?
Not for HDDs. SATA remains the standard interface for hard drives in NAS and storage-focused builds. For SSDs, NVMe is increasingly dominant in new systems.
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