Trong linh vuc thiet bi mang va vien thong, don vi U trong tu rack duoc xem la chuan kich thuoc quan trong de xac dinh chieu cao thiet bi co the lap vao tu rack. Mot U tuong duong 1,75 inch (khoang 44,45 mm), giup moi thiet bi mang tu switch, router, firewall den server deu dong bo kich thuoc.
Xem Chi Tiet Bai Viet Tai:
Nam ro don vi U giup doanh nghiep chon dung kich thuoc tu rack, tranh viec mua tu qua nho gay chat choi hoac qua lon gay lang phi. Day cung la tieu chuan giup ky thuat vien bo tri thiet bi khoa hoc, dam bao airflow toi uu va tang tuoi tho thiet bi.
Tham Khao:
Chon tu rack theo so U the nao?
De he thong hoat dong on dinh, nguoi ky thuat can tinh toan chinh xac tong so U thiet bi va ap dung dung tieu chuan khi lap dat.
Xem Them Tai:
Hieu dung ve don vi U trong tu rack de lua chon thiet bi mang – vien thong chinh xac
Cac thiet bi thuong co chieu cao tuong ung: switch 1U, server 2U, UPS 2–3U. Liet ke tong so U giup xac dinh tu can chon nhu 6U, 12U, 20U, 32U hoac 42U, phu hop tung quy mo he thong.
Doanh nghiep nen du phong them 20–30% tong so U de de mo rong hoac nang cap thiet bi ma khong phai thay tu. Day la kinh nghiem trien khai quen thuoc trong nganh phan phoi va lap dat thiet bi mang – thoai – vien thong.