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Trung bình Pro#nfr#availability#high-availability

High Availability (HA) là gì? Vai trò của "số 9" và Redundancy trong thiết kế hệ thống?

15 tháng 2, 2026

Tóm tắt nhanh

High Availability (HA) là khả năng hoạt động liên tục của hệ thống; được đo lường bằng "số 9" (tỷ lệ uptime) và đạt được thông qua Redundancy (dự phòng) kết hợp với giám sát tự động để loại bỏ điểm lỗi duy nhất (SPOF).

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High Availability (HA) là gì? Vai trò của "số 9" và Redundancy trong thiết kế hệ thống? · ORA·tech