{"id":47495,"date":"2026-06-04T17:18:30","date_gmt":"2026-06-04T10:18:30","guid":{"rendered":"https:\/\/vinastech.vn\/?p=47495"},"modified":"2026-06-04T17:29:17","modified_gmt":"2026-06-04T10:29:17","slug":"thiet-ke-luu-tru-camera-cho-chung-cu","status":"publish","type":"post","link":"https:\/\/vinastech.vn\/thiet-ke-luu-tru-camera-cho-chung-cu\/","title":{"rendered":"\u00a0Thi\u1ebft k\u1ebf l\u01b0u tr\u1eef Camera cho chung c\u01b0"},"content":{"rendered":"

Thi\u1ebft k\u1ebf l\u01b0u tr\u1eef l\u00e0 m\u1ed9t trong nh\u1eefng h\u1ea1ng m\u1ee5c quan tr\u1ecdng nh\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng Camera CCTV. N\u1ebfu camera l\u00e0 thi\u1ebft b\u1ecb thu nh\u1eadn h\u00ecnh \u1ea3nh th\u00ec h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef ch\u00ednh l\u00e0 n\u01a1i b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u h\u00ecnh \u1ea3nh \u0111\u00f3 trong su\u1ed1t th\u1eddi gian v\u1eadn h\u00e0nh.<\/p>\n

Trong th\u1ef1c t\u1ebf, nhi\u1ec1u d\u1ef1 \u00e1n ch\u1ec9 t\u1eadp trung v\u00e0o s\u1ed1 l\u01b0\u1ee3ng camera, \u0111\u1ed9 ph\u00e2n gi\u1ea3i v\u00e0 th\u01b0\u01a1ng hi\u1ec7u thi\u1ebft b\u1ecb m\u00e0 ch\u01b0a t\u00ednh to\u00e1n k\u1ef9 dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef. H\u1eadu qu\u1ea3 l\u00e0 sau khi b\u00e0n giao, h\u1ec7 th\u1ed1ng kh\u00f4ng l\u01b0u \u0111\u1ee7 s\u1ed1 ng\u00e0y theo y\u00eau c\u1ea7u, d\u1eef li\u1ec7u b\u1ecb ghi \u0111\u00e8 s\u1edbm, playback ch\u1eadm ho\u1eb7c m\u1ea5t d\u1eef li\u1ec7u khi \u1ed5 c\u1ee9ng h\u1ecfng.<\/p>\n

\u0110\u1ed1i v\u1edbi chung c\u01b0, d\u1eef li\u1ec7u camera kh\u00f4ng ch\u1ec9 ph\u1ee5c v\u1ee5 gi\u00e1m s\u00e1t th\u00f4ng th\u01b0\u1eddng m\u00e0 c\u00f2n l\u00e0 b\u1eb1ng ch\u1ee9ng quan tr\u1ecdng khi x\u1ea3y ra c\u00e1c s\u1ef1 c\u1ed1 nh\u01b0 m\u1ea5t t\u00e0i s\u1ea3n, va ch\u1ea1m xe, tranh ch\u1ea5p c\u01b0 d\u00e2n, s\u1ef1 c\u1ed1 thang m\u00e1y, s\u1ef1 c\u1ed1 an ninh ho\u1eb7c c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn v\u1eadn h\u00e0nh t\u00f2a nh\u00e0. V\u00ec v\u1eady, thi\u1ebft k\u1ebf l\u01b0u tr\u1eef camera c\u1ea7n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u00e0i b\u1ea3n ngay t\u1eeb giai \u0111o\u1ea1n \u0111\u1ea7u.<\/p>\n

\"\"<\/p>\n

    \n
  1. Vai tr\u00f2 c\u1ee7a h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef Camera<\/strong><\/li>\n<\/ol>\n

    H\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef Camera c\u00f3 nhi\u1ec7m v\u1ee5 ghi nh\u1eadn, b\u1ea3o qu\u1ea3n v\u00e0 cho ph\u00e9p truy xu\u1ea5t l\u1ea1i d\u1eef li\u1ec7u h\u00ecnh \u1ea3nh khi c\u1ea7n thi\u1ebft.<\/p>\n

    M\u1ed9t h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef t\u1ed1t c\u1ea7n \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u:<\/p>\n

      \n
    • Ghi h\u00ecnh li\u00ean t\u1ee5c 24\/7.<\/li>\n
    • L\u01b0u \u0111\u1ee7 s\u1ed1 ng\u00e0y theo y\u00eau c\u1ea7u thi\u1ebft k\u1ebf.<\/li>\n
    • H\u1ed7 tr\u1ee3 xem l\u1ea1i nhanh.<\/li>\n
    • Kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u khi m\u1ed9t \u1ed5 c\u1ee9ng b\u1ecb l\u1ed7i.<\/li>\n
    • C\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng dung l\u01b0\u1ee3ng.<\/li>\n
    • C\u00f3 c\u1ea3nh b\u00e1o khi \u1ed5 c\u1ee9ng h\u1ecfng.<\/li>\n
    • \u0110\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 ghi v\u00e0 \u0111\u1ecdc \u0111\u1ed3ng th\u1eddi.<\/li>\n
    • Ph\u00f9 h\u1ee3p v\u1edbi quy m\u00f4 s\u1ed1 l\u01b0\u1ee3ng camera.<\/li>\n<\/ul>\n

      Trong c\u00e1c t\u00f2a nh\u00e0 chung c\u01b0, y\u00eau c\u1ea7u l\u01b0u tr\u1eef ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng t\u1eeb 15 ng\u00e0y \u0111\u1ebfn 30 ng\u00e0y. V\u1edbi c\u00e1c khu v\u1ef1c \u0111\u1eb7c bi\u1ec7t nh\u01b0 h\u1ea7m xe, s\u1ea3nh, c\u1ed5ng ra v\u00e0o ho\u1eb7c khu v\u1ef1c c\u00f3 y\u00eau c\u1ea7u an ninh cao, th\u1eddi gian l\u01b0u c\u00f3 th\u1ec3 c\u1ea7n d\u00e0i h\u01a1n.<\/p>\n

        \n
      1. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef<\/strong><\/li>\n<\/ol>\n

        Dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef camera kh\u00f4ng th\u1ec3 t\u00ednh \u0111\u01a1n gi\u1ea3n theo s\u1ed1 l\u01b0\u1ee3ng camera. C\u00f9ng m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng camera nh\u01b0ng ch\u1ec9 c\u1ea7n thay \u0111\u1ed5i \u0111\u1ed9 ph\u00e2n gi\u1ea3i, bitrate ho\u1eb7c s\u1ed1 ng\u00e0y l\u01b0u th\u00ec dung l\u01b0\u1ee3ng c\u00f3 th\u1ec3 kh\u00e1c nhau r\u1ea5t l\u1edbn.<\/p>\n

        C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh g\u1ed3m:<\/p>\n

        S\u1ed1 l\u01b0\u1ee3ng camera<\/strong><\/p>\n

        S\u1ed1 l\u01b0\u1ee3ng camera c\u00e0ng nhi\u1ec1u th\u00ec dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef c\u00e0ng l\u1edbn.<\/p>\n

        V\u00ed d\u1ee5:<\/p>\n

          \n
        • 50 camera.<\/li>\n
        • 100 camera.<\/li>\n
        • 200 camera.<\/li>\n
        • 500 camera.<\/li>\n<\/ul>\n

          M\u1ed7i camera \u0111\u1ec1u t\u1ea1o ra m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u li\u00ean t\u1ee5c v\u1ec1 NVR ho\u1eb7c h\u1ec7 th\u1ed1ng VMS.<\/p>\n

          V\u1edbi chung c\u01b0 cao t\u1ea7ng, s\u1ed1 l\u01b0\u1ee3ng camera th\u01b0\u1eddng t\u1eadp trung nhi\u1ec1u t\u1ea1i:<\/p>\n

            \n
          • H\u1ea7m xe.<\/li>\n
          • S\u1ea3nh.<\/li>\n
          • Thang m\u00e1y.<\/li>\n
          • H\u00e0nh lang.<\/li>\n
          • C\u1ed5ng ra v\u00e0o.<\/li>\n
          • Ph\u00f2ng k\u1ef9 thu\u1eadt.<\/li>\n<\/ul>\n

            \u0110\u1ed9 ph\u00e2n gi\u1ea3i camera<\/strong><\/p>\n

            \u0110\u1ed9 ph\u00e2n gi\u1ea3i c\u00e0ng cao th\u00ec dung l\u01b0\u1ee3ng c\u00e0ng l\u1edbn.<\/p>\n

            M\u1ed9t s\u1ed1 \u0111\u1ed9 ph\u00e2n gi\u1ea3i ph\u1ed5 bi\u1ebfn:<\/p>\n

              \n
            • 2MP.<\/li>\n
            • 4MP.<\/li>\n
            • 5MP.<\/li>\n
            • 8MP.<\/li>\n
            • 12MP.<\/li>\n<\/ul>\n

              Trong c\u00e1c d\u1ef1 \u00e1n chung c\u01b0 hi\u1ec7n nay, 4MP l\u00e0 m\u1ee9c kh\u00e1 ph\u1ed5 bi\u1ebfn v\u00ec c\u00e2n b\u1eb1ng gi\u1eefa ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh v\u00e0 dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef.<\/p>\n

              Camera 8MP cho h\u00ecnh \u1ea3nh chi ti\u1ebft h\u01a1n nh\u01b0ng dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef v\u00e0 b\u0103ng th\u00f4ng c\u0169ng t\u0103ng \u0111\u00e1ng k\u1ec3.<\/p>\n

              Chu\u1ea9n n\u00e9n H.265<\/strong><\/p>\n

              Chu\u1ea9n n\u00e9n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef.<\/p>\n

              C\u00e1c chu\u1ea9n ph\u1ed5 bi\u1ebfn:<\/p>\n

                \n
              • H.264.<\/li>\n
              • H.265.<\/li>\n
              • H.265+ t\u00f9y t\u1eebng h\u00e3ng.<\/li>\n<\/ul>\n

                H.265 gi\u00fap gi\u1ea3m dung l\u01b0\u1ee3ng \u0111\u00e1ng k\u1ec3 so v\u1edbi H.264 trong c\u00f9ng \u0111i\u1ec1u ki\u1ec7n h\u00ecnh \u1ea3nh.<\/p>\n

                Tuy nhi\u00ean, hi\u1ec7u qu\u1ea3 n\u00e9n c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o:<\/p>\n

                  \n
                • Chuy\u1ec3n \u0111\u1ed9ng trong khung h\u00ecnh.<\/li>\n
                • \u00c1nh s\u00e1ng.<\/li>\n
                • \u0110\u1ed9 nhi\u1ec5u ban \u0111\u00eam.<\/li>\n
                • C\u1ea5u h\u00ecnh bitrate.<\/li>\n
                • Ch\u1ea5t l\u01b0\u1ee3ng c\u1ea3m bi\u1ebfn camera.<\/li>\n<\/ul>\n

                  Kh\u00f4ng n\u00ean ch\u1ec9 d\u1ef1a v\u00e0o qu\u1ea3ng c\u00e1o c\u1ee7a h\u00e3ng m\u00e0 c\u1ea7n t\u00ednh to\u00e1n theo bitrate th\u1ef1c t\u1ebf.<\/p>\n

                  S\u1ed1 ng\u00e0y l\u01b0u tr\u1eef<\/strong><\/p>\n

                  \u0110\u00e2y l\u00e0 y\u00eau c\u1ea7u quan tr\u1ecdng nh\u1ea5t t\u1eeb ch\u1ee7 \u0111\u1ea7u t\u01b0.<\/p>\n

                  V\u00ed d\u1ee5:<\/p>\n

                    \n
                  • L\u01b0u 7 ng\u00e0y.<\/li>\n
                  • L\u01b0u 15 ng\u00e0y.<\/li>\n
                  • L\u01b0u 30 ng\u00e0y.<\/li>\n
                  • L\u01b0u 60 ng\u00e0y.<\/li>\n<\/ul>\n

                    S\u1ed1 ng\u00e0y l\u01b0u c\u00e0ng d\u00e0i th\u00ec dung l\u01b0\u1ee3ng c\u00e0ng l\u1edbn.<\/p>\n

                    N\u1ebfu c\u00f9ng m\u1ed9t h\u1ec7 th\u1ed1ng 200 camera, l\u01b0u 30 ng\u00e0y s\u1ebd c\u1ea7n dung l\u01b0\u1ee3ng g\u1ea5p \u0111\u00f4i so v\u1edbi l\u01b0u 15 ng\u00e0y.<\/p>\n

                    Bitrate th\u1ef1c t\u1ebf<\/strong><\/p>\n

                    Bitrate l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn dung l\u01b0\u1ee3ng.<\/p>\n

                    V\u00ed d\u1ee5 tham kh\u1ea3o:<\/p>\n\n\n\n\n\n\n\n\n
                    Lo\u1ea1i camera<\/strong><\/td>\nBitrate tham kh\u1ea3o<\/strong><\/td>\n<\/tr>\n<\/thead>\n
                    Camera 2MP H.265<\/td>\n2\u20134 Mbps<\/td>\n<\/tr>\n
                    Camera 4MP H.265<\/td>\n4\u20136 Mbps<\/td>\n<\/tr>\n
                    Camera 8MP H.265<\/td>\n8\u201312 Mbps<\/td>\n<\/tr>\n
                    Camera AI \/ LPR<\/td>\n8\u201316 Mbps<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                    Bitrate th\u1ef1c t\u1ebf c\u00f3 th\u1ec3 t\u0103ng v\u00e0o ban \u0111\u00eam, khi b\u1eadt h\u1ed3ng ngo\u1ea1i ho\u1eb7c khi khu v\u1ef1c c\u00f3 nhi\u1ec1u chuy\u1ec3n \u0111\u1ed9ng.<\/p>\n

                      \n
                    1. C\u00f4ng th\u1ee9c t\u00ednh dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef Camera<\/strong><\/li>\n<\/ol>\n

                      C\u00f3 th\u1ec3 t\u00ednh nhanh dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef theo c\u00f4ng th\u1ee9c:<\/p>\n

                      Dung l\u01b0\u1ee3ng\/ng\u00e0y = Bitrate x 86.400 gi\u00e2y \/ 8<\/p>\n

                      Trong \u0111\u00f3:<\/p>\n

                        \n
                      • Bitrate t\u00ednh theo Mbps.<\/li>\n
                      • 86.400 l\u00e0 s\u1ed1 gi\u00e2y trong m\u1ed9t ng\u00e0y.<\/li>\n
                      • Chia 8 \u0111\u1ec3 \u0111\u1ed5i t\u1eeb bit sang byte.<\/li>\n<\/ul>\n

                        C\u00f4ng th\u1ee9c th\u1ef1c t\u1ebf d\u1ec5 nh\u1edb:<\/p>\n

                        1 Mbps ghi li\u00ean t\u1ee5c trong 1 ng\u00e0y \u2248 10.8 GB<\/p>\n

                        V\u00ed d\u1ee5:<\/p>\n

                        Camera 4MP H.265 s\u1eed d\u1ee5ng bitrate trung b\u00ecnh 5Mbps.<\/p>\n

                        Dung l\u01b0\u1ee3ng cho 1 camera\/ng\u00e0y:<\/p>\n

                        5 x 10.8GB = 54GB\/ng\u00e0y<\/p>\n

                        N\u1ebfu l\u01b0u 30 ng\u00e0y:<\/p>\n

                        54GB x 30 = 1.620GB \u2248 1.62TB\/camera<\/p>\n

                        N\u1ebfu c\u00f3 200 camera:<\/p>\n

                        1.62TB x 200 = 324TB<\/p>\n

                        Tuy nhi\u00ean trong th\u1ef1c t\u1ebf, khi s\u1eed d\u1ee5ng c\u00e1c c\u01a1 ch\u1ebf n\u00e9n th\u00f4ng minh, ghi h\u00ecnh theo chuy\u1ec3n \u0111\u1ed9ng, t\u1ed1i \u01b0u bitrate v\u00e0 c\u1ea5u h\u00ecnh ph\u00f9 h\u1ee3p, dung l\u01b0\u1ee3ng c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3.<\/p>\n

                        V\u00ec v\u1eady v\u1edbi h\u1ec7 th\u1ed1ng:<\/p>\n

                          \n
                        • 200 Camera.<\/li>\n
                        • 4MP.<\/li>\n
                        • H.265.<\/li>\n
                        • L\u01b0u 30 ng\u00e0y.<\/li>\n<\/ul>\n

                          Dung l\u01b0\u1ee3ng th\u1ef1c t\u1ebf th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng:<\/p>\n

                          150TB \u2013 250TB<\/p>\n

                          T\u00f9y theo bitrate, m\u1ee9c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng, chu\u1ea9n n\u00e9n v\u00e0 ch\u00ednh s\u00e1ch ghi h\u00ecnh.<\/p>\n

                            \n
                          1. V\u00ed d\u1ee5 t\u00ednh to\u00e1n cho h\u1ec7 th\u1ed1ng 200 Camera<\/strong><\/li>\n<\/ol>\n

                            Gi\u1ea3 \u0111\u1ecbnh:<\/p>\n

                              \n
                            • S\u1ed1 l\u01b0\u1ee3ng camera: 200.<\/li>\n
                            • \u0110\u1ed9 ph\u00e2n gi\u1ea3i: 4MP.<\/li>\n
                            • Chu\u1ea9n n\u00e9n: H.265.<\/li>\n
                            • Th\u1eddi gian l\u01b0u: 30 ng\u00e0y.<\/li>\n
                            • Bitrate trung b\u00ecnh: 3.5Mbps.<\/li>\n<\/ul>\n

                              Dung l\u01b0\u1ee3ng cho 1 camera\/ng\u00e0y:<\/p>\n

                              3.5 x 10.8GB = 37.8GB\/ng\u00e0y<\/p>\n

                              Dung l\u01b0\u1ee3ng cho 1 camera\/30 ng\u00e0y:<\/p>\n

                              37.8 x 30 = 1.134GB \u2248 1.13TB<\/p>\n

                              Dung l\u01b0\u1ee3ng cho 200 camera:<\/p>\n

                              1.13TB x 200 = 226TB<\/p>\n

                              Nh\u01b0 v\u1eady, h\u1ec7 th\u1ed1ng c\u1ea7n kho\u1ea3ng 226TB dung l\u01b0\u1ee3ng usable.<\/p>\n

                              N\u1ebfu c\u1ed9ng th\u00eam d\u1ef1 ph\u00f2ng v\u1eadn h\u00e0nh, metadata, sai s\u1ed1 c\u1ea5u h\u00ecnh v\u00e0 t\u0103ng bitrate ban \u0111\u00eam, n\u00ean thi\u1ebft k\u1ebf kho\u1ea3ng 250TB usable.<\/p>\n

                                \n
                              1. L\u1ef1a ch\u1ecdn m\u00f4 h\u00ecnh l\u01b0u tr\u1eef<\/strong><\/li>\n<\/ol>\n

                                T\u00f9y theo quy m\u00f4 d\u1ef1 \u00e1n, c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn c\u00e1c m\u00f4 h\u00ecnh l\u01b0u tr\u1eef kh\u00e1c nhau.<\/p>\n

                                L\u01b0u tr\u1eef tr\u1ef1c ti\u1ebfp tr\u00ean NVR<\/strong><\/p>\n

                                \u0110\u00e2y l\u00e0 m\u00f4 h\u00ecnh ph\u1ed5 bi\u1ebfn v\u1edbi c\u00e1c d\u1ef1 \u00e1n quy m\u00f4 nh\u1ecf v\u00e0 v\u1eeba.<\/p>\n

                                \u01afu \u0111i\u1ec3m:<\/p>\n

                                  \n
                                • D\u1ec5 tri\u1ec3n khai.<\/li>\n
                                • Chi ph\u00ed h\u1ee3p l\u00fd.<\/li>\n
                                • Qu\u1ea3n l\u00fd \u0111\u01a1n gi\u1ea3n.<\/li>\n
                                • Ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng \u0111\u1ed9c l\u1eadp.<\/li>\n<\/ul>\n

                                  Ph\u00f9 h\u1ee3p v\u1edbi:<\/p>\n

                                    \n
                                  • D\u01b0\u1edbi 100 camera.<\/li>\n
                                  • Chung c\u01b0 nh\u1ecf.<\/li>\n
                                  • V\u0103n ph\u00f2ng.<\/li>\n
                                  • Nh\u00e0 x\u01b0\u1edfng quy m\u00f4 v\u1eeba.<\/li>\n<\/ul>\n

                                    Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/p>\n

                                      \n
                                    • Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng h\u1ea1n ch\u1ebf.<\/li>\n
                                    • Hi\u1ec7u n\u0103ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u1eebng NVR.<\/li>\n
                                    • Khi NVR l\u1ed7i c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u camera.<\/li>\n<\/ul>\n

                                      L\u01b0u tr\u1eef b\u1eb1ng NVR ph\u00e2n t\u00e1n<\/strong><\/p>\n

                                      M\u00f4 h\u00ecnh n\u00e0y s\u1eed d\u1ee5ng nhi\u1ec1u NVR \u0111\u1eb7t theo khu v\u1ef1c ho\u1eb7c theo block.<\/p>\n

                                      V\u00ed d\u1ee5:<\/p>\n

                                        \n
                                      • NVR cho h\u1ea7m xe.<\/li>\n
                                      • NVR cho s\u1ea3nh.<\/li>\n
                                      • NVR cho h\u00e0nh lang.<\/li>\n
                                      • NVR cho khu ti\u1ec7n \u00edch.<\/li>\n<\/ul>\n

                                        \u01afu \u0111i\u1ec3m:<\/p>\n

                                          \n
                                        • Ph\u00e2n t\u1ea3i t\u1ed1t.<\/li>\n
                                        • D\u1ec5 khoanh v\u00f9ng s\u1ef1 c\u1ed1.<\/li>\n
                                        • Kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t thi\u1ebft b\u1ecb duy nh\u1ea5t.<\/li>\n<\/ul>\n

                                          Ph\u00f9 h\u1ee3p v\u1edbi:<\/p>\n

                                            \n
                                          • Chung c\u01b0 nhi\u1ec1u block.<\/li>\n
                                          • D\u1ef1 \u00e1n c\u00f3 nhi\u1ec1u khu v\u1ef1c \u0111\u1ed9c l\u1eadp.<\/li>\n
                                          • H\u1ec7 th\u1ed1ng t\u1eeb 100 \u0111\u1ebfn 300 camera.<\/li>\n<\/ul>\n

                                            L\u01b0u tr\u1eef t\u1eadp trung b\u1eb1ng NAS\/SAN<\/strong><\/p>\n

                                            \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng l\u1edbn, vi\u1ec7c s\u1eed d\u1ee5ng NAS ho\u1eb7c SAN l\u00e0 l\u1ef1a ch\u1ecdn chuy\u00ean nghi\u1ec7p h\u01a1n.<\/p>\n

                                            \u01afu \u0111i\u1ec3m:<\/p>\n

                                              \n
                                            • Dung l\u01b0\u1ee3ng l\u1edbn.<\/li>\n
                                            • D\u1ec5 m\u1edf r\u1ed9ng.<\/li>\n
                                            • H\u1ed7 tr\u1ee3 RAID m\u1ea1nh.<\/li>\n
                                            • Qu\u1ea3n l\u00fd t\u1eadp trung.<\/li>\n
                                            • Ph\u00f9 h\u1ee3p v\u1edbi VMS chuy\u00ean nghi\u1ec7p.<\/li>\n
                                            • H\u1ed7 tr\u1ee3 nhi\u1ec1u lu\u1ed3ng ghi v\u00e0 \u0111\u1ecdc \u0111\u1ed3ng th\u1eddi.<\/li>\n<\/ul>\n

                                              Ph\u00f9 h\u1ee3p v\u1edbi:<\/p>\n

                                                \n
                                              • Tr\u00ean 300 camera.<\/li>\n
                                              • Khu \u0111\u00f4 th\u1ecb.<\/li>\n
                                              • T\u1ed5 h\u1ee3p chung c\u01b0 l\u1edbn.<\/li>\n
                                              • Trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i.<\/li>\n
                                              • D\u1ef1 \u00e1n y\u00eau c\u1ea7u l\u01b0u tr\u1eef d\u00e0i ng\u00e0y.<\/li>\n<\/ul>\n
                                                  \n
                                                1. Thi\u1ebft k\u1ebf RAID cho l\u01b0u tr\u1eef Camera<\/strong><\/li>\n<\/ol>\n

                                                  RAID gi\u00fap b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u khi \u1ed5 c\u1ee9ng b\u1ecb l\u1ed7i.<\/p>\n

                                                  Trong h\u1ec7 th\u1ed1ng camera, \u1ed5 c\u1ee9ng ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c 24\/7 n\u00ean r\u1ee7i ro h\u1ecfng \u1ed5 l\u00e0 r\u1ea5t th\u1ef1c t\u1ebf.<\/p>\n

                                                  RAID 0<\/strong><\/p>\n

                                                  Kh\u00f4ng khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng.<\/p>\n

                                                  \u01afu \u0111i\u1ec3m:<\/p>\n

                                                    \n
                                                  • T\u1eadn d\u1ee5ng t\u1ed1i \u0111a dung l\u01b0\u1ee3ng.<\/li>\n
                                                  • T\u1ed1c \u0111\u1ed9 cao.<\/li>\n<\/ul>\n

                                                    Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/p>\n

                                                      \n
                                                    • H\u1ecfng m\u1ed9t \u1ed5 l\u00e0 m\u1ea5t d\u1eef li\u1ec7u.<\/li>\n
                                                    • Kh\u00f4ng c\u00f3 d\u1ef1 ph\u00f2ng.<\/li>\n<\/ul>\n

                                                      RAID 5<\/strong><\/p>\n

                                                      RAID 5 l\u00e0 l\u1ef1a ch\u1ecdn c\u00e2n b\u1eb1ng gi\u1eefa dung l\u01b0\u1ee3ng v\u00e0 an to\u00e0n d\u1eef li\u1ec7u.<\/p>\n

                                                      \u01afu \u0111i\u1ec3m:<\/p>\n

                                                        \n
                                                      • Ti\u1ebft ki\u1ec7m dung l\u01b0\u1ee3ng h\u01a1n RAID 6.<\/li>\n
                                                      • C\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i m\u1ed9t \u1ed5 c\u1ee9ng.<\/li>\n
                                                      • Ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng v\u1eeba v\u00e0 nh\u1ecf.<\/li>\n<\/ul>\n

                                                        Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/p>\n

                                                          \n
                                                        • N\u1ebfu trong qu\u00e1 tr\u00ecnh rebuild c\u00f3 th\u00eam m\u1ed9t \u1ed5 h\u1ecfng th\u00ec c\u00f3 nguy c\u01a1 m\u1ea5t d\u1eef li\u1ec7u.<\/li>\n
                                                        • Th\u1eddi gian rebuild \u1ed5 dung l\u01b0\u1ee3ng l\u1edbn c\u00f3 th\u1ec3 k\u00e9o d\u00e0i.<\/li>\n<\/ul>\n

                                                          RAID 5 ph\u00f9 h\u1ee3p khi mu\u1ed1n \u201c\u0111\u1ee1 t\u1ed1n \u1ed5 c\u1ee9ng m\u00e0 v\u1eabn c\u00f3 d\u1ef1 ph\u00f2ng\u201d.<\/p>\n

                                                          RAID 6<\/strong><\/p>\n

                                                          RAID 6 an to\u00e0n h\u01a1n RAID 5.<\/p>\n

                                                          \u01afu \u0111i\u1ec3m:<\/p>\n

                                                            \n
                                                          • Ch\u1ecbu l\u1ed7i \u0111\u1ed3ng th\u1eddi hai \u1ed5 c\u1ee9ng.<\/li>\n
                                                          • Ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng l\u1edbn.<\/li>\n
                                                          • Gi\u1ea3m r\u1ee7i ro khi rebuild.<\/li>\n<\/ul>\n

                                                            Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/p>\n

                                                              \n
                                                            • T\u1ed1n th\u00eam dung l\u01b0\u1ee3ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng hai \u1ed5.<\/li>\n
                                                            • Chi ph\u00ed cao h\u01a1n RAID 5.<\/li>\n<\/ul>\n

                                                              \u0110\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng camera l\u1edbn, RAID 6 th\u01b0\u1eddng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb h\u01a1n RAID 5.<\/p>\n

                                                              Hot Spare<\/strong><\/p>\n

                                                              Hot Spare l\u00e0 \u1ed5 c\u1ee9ng d\u1ef1 ph\u00f2ng n\u00f3ng.<\/p>\n

                                                              Khi m\u1ed9t \u1ed5 trong RAID b\u1ecb l\u1ed7i, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng s\u1eed d\u1ee5ng \u1ed5 Hot Spare \u0111\u1ec3 rebuild.<\/p>\n

                                                              \u0110\u00e2y l\u00e0 t\u00ednh n\u0103ng r\u1ea5t n\u00ean c\u00f3 trong c\u00e1c h\u1ec7 th\u1ed1ng camera quan tr\u1ecdng.<\/p>\n

                                                                \n
                                                              1. NVR d\u1ef1 ph\u00f2ng<\/strong><\/li>\n<\/ol>\n

                                                                Trong c\u00e1c d\u1ef1 \u00e1n nh\u1ecf, h\u1ec7 th\u1ed1ng th\u01b0\u1eddng ch\u1ec9 c\u00f3 m\u1ed9t NVR.<\/p>\n

                                                                Tuy nhi\u00ean v\u1edbi chung c\u01b0 l\u1edbn, n\u1ebfu m\u1ed9t NVR l\u1ed7i c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n ghi h\u00ecnh c\u1ee7a h\u00e0ng ch\u1ee5c ho\u1eb7c h\u00e0ng tr\u0103m camera.<\/p>\n

                                                                V\u00ec v\u1eady c\u1ea7n xem x\u00e9t NVR d\u1ef1 ph\u00f2ng.<\/p>\n

                                                                C\u00e1c m\u00f4 h\u00ecnh c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng:<\/p>\n

                                                                  \n
                                                                • NVR d\u1ef1 ph\u00f2ng n\u00f3ng.<\/li>\n
                                                                • NVR d\u1ef1 ph\u00f2ng l\u1ea1nh.<\/li>\n
                                                                • NVR ph\u00e2n t\u00e1n theo khu v\u1ef1c.<\/li>\n
                                                                • VMS h\u1ed7 tr\u1ee3 failover recording.<\/li>\n<\/ul>\n

                                                                  Kinh nghi\u1ec7m th\u1ef1c t\u1ebf<\/strong><\/p>\n

                                                                  N\u1ebfu h\u1ec7 th\u1ed1ng c\u00f3 tr\u00ean 100 camera, kh\u00f4ng n\u00ean gom to\u00e0n b\u1ed9 v\u00e0o m\u1ed9t NVR duy nh\u1ea5t.<\/p>\n

                                                                  N\u00ean chia theo khu v\u1ef1c:<\/p>\n

                                                                    \n
                                                                  • H\u1ea7m xe.<\/li>\n
                                                                  • S\u1ea3nh.<\/li>\n
                                                                  • H\u00e0nh lang.<\/li>\n
                                                                  • Thang m\u00e1y.<\/li>\n
                                                                  • Ngo\u00e0i tr\u1eddi.<\/li>\n<\/ul>\n

                                                                    Khi m\u1ed9t NVR l\u1ed7i, ch\u1ec9 m\u1ed9t khu v\u1ef1c b\u1ecb \u1ea3nh h\u01b0\u1edfng thay v\u00ec to\u00e0n b\u1ed9 t\u00f2a nh\u00e0.<\/p>\n

                                                                      \n
                                                                    1. C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn trong thi\u1ebft k\u1ebf l\u01b0u tr\u1eef Camera<\/strong><\/li>\n<\/ol>\n

                                                                      Ch\u1ec9 t\u00ednh theo dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng raw<\/strong><\/p>\n

                                                                      \u0110\u00e2y l\u00e0 l\u1ed7i ph\u1ed5 bi\u1ebfn.<\/p>\n

                                                                      V\u00ed d\u1ee5:<\/p>\n

                                                                      M\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 12 \u1ed5 20TB.<\/p>\n

                                                                      Dung l\u01b0\u1ee3ng raw:<\/p>\n

                                                                      12 x 20TB = 240TB<\/p>\n

                                                                      Nh\u01b0ng sau khi c\u1ea5u h\u00ecnh RAID 5 ho\u1eb7c RAID 6, dung l\u01b0\u1ee3ng usable s\u1ebd th\u1ea5p h\u01a1n.<\/p>\n

                                                                      Ngo\u00e0i ra c\u00f2n ph\u1ea3i tr\u1eeb:<\/p>\n

                                                                        \n
                                                                      • Dung l\u01b0\u1ee3ng h\u1ec7 th\u1ed1ng.<\/li>\n
                                                                      • Metadata.<\/li>\n
                                                                      • Dung l\u01b0\u1ee3ng d\u1ef1 ph\u00f2ng.<\/li>\n
                                                                      • Sai s\u1ed1 \u0111\u1ecbnh d\u1ea1ng \u1ed5.<\/li>\n<\/ul>\n

                                                                        Kh\u00f4ng t\u00ednh bitrate th\u1ef1c t\u1ebf<\/strong><\/p>\n

                                                                        Nhi\u1ec1u thi\u1ebft k\u1ebf ch\u1ec9 ghi chung \u201cCamera 4MP\u201d m\u00e0 kh\u00f4ng x\u00e1c \u0111\u1ecbnh bitrate.<\/p>\n

                                                                        \u0110i\u1ec1u n\u00e0y r\u1ea5t nguy hi\u1ec3m v\u00ec c\u00f9ng 4MP nh\u01b0ng bitrate c\u00f3 th\u1ec3 kh\u00e1c nhau r\u1ea5t l\u1edbn.<\/p>\n

                                                                        Kh\u00f4ng t\u00ednh l\u01b0u l\u01b0\u1ee3ng playback<\/strong><\/p>\n

                                                                        H\u1ec7 th\u1ed1ng kh\u00f4ng ch\u1ec9 ghi h\u00ecnh m\u00e0 c\u00f2n ph\u1ea3i ph\u1ee5c v\u1ee5 xem l\u1ea1i.<\/p>\n

                                                                        N\u1ebfu nhi\u1ec1u ng\u01b0\u1eddi c\u00f9ng playback, h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef c\u00f3 th\u1ec3 b\u1ecb qu\u00e1 t\u1ea3i.<\/p>\n

                                                                        Kh\u00f4ng d\u1ef1 ph\u00f2ng \u1ed5 c\u1ee9ng<\/strong><\/p>\n

                                                                        Kh\u00f4ng s\u1eed d\u1ee5ng RAID ho\u1eb7c kh\u00f4ng c\u00f3 Hot Spare c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ea5t d\u1eef li\u1ec7u khi \u1ed5 c\u1ee9ng h\u1ecfng.<\/p>\n

                                                                        Kh\u00f4ng c\u00f3 c\u1ea3nh b\u00e1o l\u1ed7i HDD<\/strong><\/p>\n

                                                                        N\u1ebfu \u1ed5 c\u1ee9ng h\u1ecfng nh\u01b0ng kh\u00f4ng c\u00f3 c\u1ea3nh b\u00e1o, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u00e2m th\u1ea7m m\u1ea5t kh\u1ea3 n\u0103ng d\u1ef1 ph\u00f2ng trong th\u1eddi gian d\u00e0i.<\/p>\n

                                                                          \n
                                                                        1. Khuy\u1ebfn ngh\u1ecb thi\u1ebft k\u1ebf c\u1ee7a VinaSTech<\/strong><\/li>\n<\/ol>\n

                                                                          \u0110\u1ed1i v\u1edbi chung c\u01b0 nh\u1ecf:<\/p>\n

                                                                            \n
                                                                          • D\u01b0\u1edbi 100 camera.<\/li>\n
                                                                          • C\u00f3 th\u1ec3 d\u00f9ng NVR l\u01b0u tr\u1eef tr\u1ef1c ti\u1ebfp.<\/li>\n
                                                                          • RAID 5.<\/li>\n
                                                                          • L\u01b0u 15\u201330 ng\u00e0y.<\/li>\n<\/ul>\n

                                                                            \u0110\u1ed1i v\u1edbi chung c\u01b0 v\u1eeba:<\/p>\n

                                                                              \n
                                                                            • 100\u2013300 camera.<\/li>\n
                                                                            • NVR ph\u00e2n t\u00e1n theo khu v\u1ef1c.<\/li>\n
                                                                            • RAID 5<\/li>\n
                                                                            • C\u00f3 \u1ed5 Hot Spare cho khu v\u1ef1c quan tr\u1ecdng.<\/li>\n<\/ul>\n

                                                                              \u0110\u1ed1i v\u1edbi t\u1ed5 h\u1ee3p l\u1edbn:<\/p>\n

                                                                                \n
                                                                              • Tr\u00ean 300 camera.<\/li>\n
                                                                              • N\u00ean d\u00f9ng VMS + NAS\/SAN.<\/li>\n
                                                                              • RAID 5\/RAID 6.<\/li>\n
                                                                              • NVR ho\u1eb7c Recording Server d\u1ef1 ph\u00f2ng.<\/li>\n
                                                                              • T\u00e1ch m\u1ea1ng l\u01b0u tr\u1eef ri\u00eang n\u1ebfu c\u1ea7n.<\/li>\n
                                                                              • Gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng \u1ed5 c\u1ee9ng t\u1eadp trung.<\/li>\n<\/ul>\n

                                                                                 <\/p>\n

                                                                                Thi\u1ebft k\u1ebf l\u01b0u tr\u1eef Camera kh\u00f4ng \u0111\u01a1n thu\u1ea7n l\u00e0 t\u00ednh xem c\u1ea7n bao nhi\u00eau \u1ed5 c\u1ee9ng. \u0110\u00e2y l\u00e0 b\u00e0i to\u00e1n t\u1ed5ng h\u1ee3p gi\u1eefa s\u1ed1 l\u01b0\u1ee3ng camera, \u0111\u1ed9 ph\u00e2n gi\u1ea3i, bitrate, chu\u1ea9n n\u00e9n, th\u1eddi gian l\u01b0u, m\u00f4 h\u00ecnh ghi h\u00ecnh, RAID, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 \u0111\u1ed9 an to\u00e0n d\u1eef li\u1ec7u.<\/p>\n

                                                                                V\u1edbi h\u1ec7 th\u1ed1ng chung c\u01b0, d\u1eef li\u1ec7u camera c\u00f3 gi\u00e1 tr\u1ecb r\u1ea5t l\u1edbn trong v\u1eadn h\u00e0nh v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1. V\u00ec v\u1eady, h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef c\u1ea7n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo nguy\u00ean t\u1eafc \u0111\u1ee7 dung l\u01b0\u1ee3ng, c\u00f3 d\u1ef1 ph\u00f2ng, d\u1ec5 m\u1edf r\u1ed9ng v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng c\u1ea3nh b\u00e1o l\u1ed7i k\u1ecbp th\u1eddi.<\/p>\n

                                                                                Kinh nghi\u1ec7m th\u1ef1c t\u1ebf cho th\u1ea5y chi ph\u00ed \u0111\u1ea7u t\u01b0 th\u00eam cho RAID, Hot Spare ho\u1eb7c NVR d\u1ef1 ph\u00f2ng th\u01b0\u1eddng nh\u1ecf h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi thi\u1ec7t h\u1ea1i khi m\u1ea5t d\u1eef li\u1ec7u camera trong m\u1ed9t s\u1ef1 c\u1ed1 quan tr\u1ecdng.<\/p>\n

                                                                                 <\/p>\n","protected":false},"excerpt":{"rendered":"

                                                                                Thi\u1ebft k\u1ebf l\u01b0u tr\u1eef l\u00e0 m\u1ed9t trong nh\u1eefng h\u1ea1ng m\u1ee5c quan tr\u1ecdng nh\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng Camera CCTV. N\u1ebfu camera l\u00e0 thi\u1ebft b\u1ecb thu nh\u1eadn h\u00ecnh \u1ea3nh th\u00ec h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef ch\u00ednh l\u00e0 n\u01a1i b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u h\u00ecnh \u1ea3nh \u0111\u00f3 trong su\u1ed1t th\u1eddi gian v\u1eadn h\u00e0nh.
                                                                                \nTrong th\u1ef1c t\u1ebf, nhi\u1ec1u d\u1ef1 \u00e1n ch\u1ec9 t\u1eadp trung v\u00e0o s\u1ed1 l\u01b0\u1ee3ng camera, \u0111\u1ed9 ph\u00e2n gi\u1ea3i v\u00e0 th\u01b0\u01a1ng hi\u1ec7u thi\u1ebft b\u1ecb m\u00e0 ch\u01b0a t\u00ednh to\u00e1n k\u1ef9 dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef. H\u1eadu qu\u1ea3 l\u00e0 sau khi b\u00e0n giao, h\u1ec7 th\u1ed1ng kh\u00f4ng l\u01b0u \u0111\u1ee7 s\u1ed1 ng\u00e0y theo y\u00eau c\u1ea7u, d\u1eef li\u1ec7u b\u1ecb ghi \u0111\u00e8 s\u1edbm, playback ch\u1eadm ho\u1eb7c m\u1ea5t d\u1eef li\u1ec7u khi \u1ed5 c\u1ee9ng h\u1ecfng.
                                                                                \n\u0110\u1ed1i v\u1edbi chung c\u01b0, d\u1eef li\u1ec7u camera kh\u00f4ng ch\u1ec9 ph\u1ee5c v\u1ee5 gi\u00e1m s\u00e1t th\u00f4ng th\u01b0\u1eddng m\u00e0 c\u00f2n l\u00e0 b\u1eb1ng ch\u1ee9ng quan tr\u1ecdng khi x\u1ea3y ra c\u00e1c s\u1ef1 c\u1ed1 nh\u01b0 m\u1ea5t t\u00e0i s\u1ea3n, va ch\u1ea1m xe, tranh ch\u1ea5p c\u01b0 d\u00e2n, s\u1ef1 c\u1ed1 thang m\u00e1y, s\u1ef1 c\u1ed1 an ninh ho\u1eb7c c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn v\u1eadn h\u00e0nh t\u00f2a nh\u00e0. V\u00ec v\u1eady, thi\u1ebft k\u1ebf l\u01b0u tr\u1eef camera c\u1ea7n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u00e0i b\u1ea3n ngay t\u1eeb giai \u0111o\u1ea1n \u0111\u1ea7u.<\/p>\n","protected":false},"author":1,"featured_media":47496,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,2545,2573,2555,2575,2567,2557,2559,2571,3424,1718,1612,2569,2547,2551],"tags":[],"class_list":["post-47495","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-khong-phan-loai","category-dich-vu","category-dich-vu-thue-ngoai","category-giai-phap","category-giai-phap-chuyen-nganh","category-giai-phap-so-hoa-va-luu-tru-ho-so","category-ha-tang-cntt","category-ha-tang-mang","category-he-thong-giam-sat-va-tu-dong-hoa","category-nas","category-tin-cong-nghe-vi","category-tin-tuc","category-trien-khai-du-lieu-va-phan-tich","category-trien-khai-tich-hop-he-thong","category-tu-van-giai-phap"],"yoast_head":"\n\u00a0Thi\u1ebft k\u1ebf l\u01b0u tr\u1eef Camera cho chung c\u01b0<\/title>\n<meta name=\"description\" content=\"Thi\u1ebft k\u1ebf l\u01b0u tr\u1eef l\u00e0 m\u1ed9t trong nh\u1eefng h\u1ea1ng m\u1ee5c quan tr\u1ecdng nh\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng Camera CCTV. 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