 Sau khi da hoan tat thiet ke web, dang ky ten mien, thi cong viec ke tiep phai nghi den la luu tru web hay con goi la web hosting.
Webhosting la gi ? Web Hosting la khong gian tren may chu co cai dat cac dich vu Internet nhu world wide web (www), truyen file(FTP), Mail…, noi tom lai la noi chua website cua doanh nghiep (DN). Web Hosting dong thoi cung la noi dien ra tat ca cac hoat dong giao dich, trao doi thong tin giua website voi nguoi su dung Internet va ho tro cac phan mem Internet hoat dong. DN co the chon thue web hosting cua nha cung cap dich vu (ISP) co dung luong phu hop voi dung luong website. Voi bat ky hinh thuc nao (tu trang bi may chu hay thue may chu) thi DN cung nen co cac hieu biet can thiet ve Web Hosting va may chu Web. Cac yeu cau can thiet cua Web Hosting • Web Hosting phai co mot dung luong dia du lon (tinh theo MBytes) de luu giu day du du lieu, hinh anh va cac trinh ung dung cua website. • Cho phep cap nhat website bang giao thuc FTP vao bat cu thoi diem nao • Phai co bang thong (Bandwidth) du lon de phuc vu cac hoat dong giao dich, trao doi thong tin cua website dien ra nhanh chong. • Ho tro cac cong cu lap trinh tren Internet va cac cong cu viet san de phuc vu cac hoat dong giao dich tren Website nhu gui mail, upload, download qua trang Web. • Ho tro day du cac dich vu E-mail: tao, sua, xoa cac tai khoan (account) email voi tinh nang POP3 E-mail, E-mail Forwarding, Webmail. • Ho tro cac cong cu thong ke nguoi dung truy cap trang web. • Cho phep chu dong tao cac subdomain. Cac loai Web Hosting Linux Hosting Linux la he thong server ma hau het cac nha cung cap host Viet Nam dang su dung. Khi host tren server nay, nguoi soan web phai co kien thuc viet web bang HTML, soan tung trang hoac soan script CGI rat cuc nhoc va phai upload bang FTP. Neu co sua lai thu muc hoac mat mot trang nao do thi phai kiem tra lai toan bo cac duong dan den trang do. Cac tien ich nhu counter dem so nguoi truy cap, form nhap lieu cung phai viet bang ngon ngu CGI va deu phai viet rieng. Window Hosting Windows Server hien dang la "mot thoi thuong" vi Microsoft co gang ho tro hoan toan va de dang cho nguoi dung ma ngay ca nguoi khong chuyen nghiep van co the tao ra trang web chuyen nghiep. Mot trong nhung tinh nang cua Server windows la co ho tro Frontpage extension. Chon may chu web (server) Hieu suat Hieu suat cua mot server duoc danh gia qua kha nang xu ly so luong nguoi truy cap cung luc, xu ly cang nhieu dong nghia voi server co hieu suat cang lon. Hieu suat cua mot server phu thuoc vao nhieu yeu to khac nhau, nhu so luong bo vi xu ly (VXL), loai VXL, bo nho va dung luong dia cung. Vai tro cua VXL Mot may tinh van phong thuong co mot VXL, goi tat la CPU. Trong khi do mot web server thuong co tu 2 den 4 VXL, cang nhieu VXL, website dap ung yeu cau cang nhanh. Toc do VXL duoc tinh bang hertz (Hz), so Hz cang cao, VXL chay cang nhanh.. Vai tro cua bo nho Mot may chu phai co kha nang xu ly nhieu tac vu cung mot luc. Co the vua tra loi yeu cau nguoi dung cuoi, truy van du lieu va vua chay chuong trinh. Moi mot tac vu server can mot phan bo nho, cang co nhieu bo nho thi may chu cua DN cang co the thuc hien nhieu nhiem vu dong thoi. Dung luong nho can thiet cho mot may chu web phai co it nhat mot 1Gigabyte, doi voi nhung loai hinh giai tri thi can lon hon. Vai tro cua dia cung Kich thuoc: quyet dinh kha nang chua du lieu, khong anh huong truc tiep toi hieu suat. Web server can khong gian de chua phan mem, ma nguon, hinh anh, am thanh. Do tin cay Mot khi web server bi mat du lieu, mat nguon… nguoi dung khong the truy cap vao website cua DN. Dieu do khong chi lam mat thoi gian cua DN de khac phuc ma co the mat thu nhap (doi voi web ban hang qua mang), neu thuong xuyen co the dan den mat tin cay cua nguoi dung. Hai yeu to anh huong den tinh lien tuc cua may chu web la du phong va nguon dien. Du phong du lieu: Cong nghe RAID (RAID-0, RAID-1, RAID-3, RAID-5) su dung nhieu o cung ket hop lai trong mot may chu va du lieu duoc luu o nhieu noi khac nhau, giai quyet van de du phong rat hieu qua. Khi mot o cung bi hong, dung RAID may chu web cua DN van co the hoat dong va du thoi gian de thay o cung da hong hoc.Can su dung cong nghe RAID cung (thiet lap boi mot thiet bi, khac voi thiet lap RAID boi phan mem) va co kha nang mo rong. Du phong nguon dien: mat dien dot ngot co kha nang lam mat mat du lieu, HDH bi hong, he thong ngung hoat dong. Voi loai hinh thue cho dat may chu, DN can dat van de voi ISP phai dam bao nguon dien 24/24. Lua chon mua hay thue may chu deu can phai dam bao cac tieu chi: • May chu Hosting Web ket noi Internet on dinh • Giai phap bao mat du lieu toi uu • Chi phi thap • Co the tu thay doi va cap nhat noi dung trang Web • He thong du phong va ho tro ky thuat 24/24 gio. • Co nhan vien ky thuat am hieu he thong. Article source http://w4rum.com/265.t
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