SATA (Serial ATA)

SATA (Serial ATA) is an interface standard for connecting storage devices like hard disks and 2.5-inch SSDs to a motherboard. The current version, SATA III, runs at 6 Gbit/s.

Why it matters

SATA is cheap and nearly universal, so it is common in desktops, servers and NAS devices. Its 6 Gbit/s link gives a practical limit of about 550 MB/s, which is fine for hard disks but a bottleneck for fast SSDs.

SATA drives use one data cable and a separate power connector, and support hot swapping in many server bays.

Example

6 Gbit/s with 8b/10b encoding
6,000,000,000 x 8/10 / 8 = 600 MB/s theoretical

After protocol overhead, real drives top out around 550 MB/s, far below modern NVMe drives.

Common mistakes

• Confusing SATA with M.2 SATA, which is the same protocol in a different shape.
• Expecting a SATA SSD to match NVMe speeds.
• Mixing up SATA and eSATA or SAS connectors.

Related

• NVMe
• SSD
• HDD
• Motherboard

यह पेज सामान्य जानकारी है, जिसे हमारी संपादकीय टीम ने लिखा है और दस्तावेज़ीकरण बदलने पर अपडेट किया जाता है। सर्वर और प्रदाता अलग-अलग होते हैं, इसलिए बदलाव पहले सुरक्षित तरीके से जाँचें। देखें: संपादकीय नीति और अस्वीकरण.