{"id":16825,"date":"2026-05-05T06:33:55","date_gmt":"2026-05-05T05:33:55","guid":{"rendered":"https:\/\/ocs.com\/my\/?p=16825"},"modified":"2026-05-05T06:33:55","modified_gmt":"2026-05-05T05:33:55","slug":"in-data-centres-keeping-cool-where-it-matters-most","status":"publish","type":"post","link":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/","title":{"rendered":"In Data Centres, Keeping Cool Where It Matters Most"},"content":{"rendered":"    <section \n        id=\"block_acf-block-69f981435f3f6\" \n        class=\"text-[#475467] prose-h1:font-semibold prose-h1:mb-10 prose-headings:font-medium prose prose-ocs prose-li:pl-0 w-full max-w-none\n        \"\n        style=\"background-color: #FFFFFF;\"\n    >\n        <h3>CRAC vs CRAH Systems and What It Takes to Maintain Stable Environments<\/h3>\n<p>Cooling in <a href=\"https:\/\/ocs.com\/my\/sectors\/data-centres\/\">data centres<\/a> is not just about temperature control. It directly supports uptime, equipment performance, and operational continuity. As workloads increase and environments become more complex, the way cooling systems are designed and managed becomes a critical part of facility operations.<\/p>\n<p>Here we explore how <strong>CRAC and CRAH systems<\/strong> are used in data centres, when each is applied, and what it takes on the ground to keep environments stable.<\/p>\n<h3>What Are CRAC and CRAH Systems in Data Centres?<\/h3>\n<p>Data centres rely on two primary cooling systems:<\/p>\n<ul>\n<li><strong>CRAC (Computer Room Air Conditioner)<\/strong><\/li>\n<li><strong>CRAH (Computer Room Air Handler)<\/strong><\/li>\n<\/ul>\n<p>While both regulate temperature and airflow, they differ in how they operate and where they are most effective.<\/p>\n<h3>CRAC Systems are Practical for Smaller Data Centres<\/h3>\n<p>CRAC units use a compressor and refrigerant system, similar to standard air conditioning. They are self-contained and operate independently.<\/p>\n<p>According to OCS Malaysia Data Centre SME, Mr. Dheventhiran Krisnan:<\/p>\n    <\/section>\n\n\n    <section id=\"block_acf-block-69f981435f42c\" class=\"px-4 py-8 md:px-8 relative overflow-hidden rounded-3xl\" style=\"background-color: #F7FBF7 ;\">\n        <svg class=\"text-[#d6ead6] absolute -top-[31px] -right-[52px] w-[280px] h-[280px] md:-top-[35px] md:-right-[68px]\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewBox=\"0 0 345 348\" preserveAspectRatio=\"none\">\n            <g fill=\"currentColor\" opacity=\".1\">\n                <path d=\"M37.763 65.46 64.38 38.674a173.12 173.12 0 0 1 21.277-14.72L23.135 86.87a174.285 174.285 0 0 1 14.628-21.41ZM4.894 131.987c.777-3.131 1.639-6.228 2.582-9.289l113.785-114.5a170.68 170.68 0 0 1 9.231-2.6L4.894 131.987ZM.068 163.603c.147-2.442.344-4.87.59-7.284L154.672 1.336c2.399-.248 4.812-.446 7.239-.594L.068 163.603ZM.444 189.985A176.37 176.37 0 0 1 0 183.742L181.924.674a173.1 173.1 0 0 1 6.204.447L.444 189.985ZM4.071 213.09c-.415-1.83-.8-3.672-1.158-5.524L205.6 3.606c1.841.359 3.671.747 5.49 1.165L4.071 213.09ZM10.127 233.758a173.1 173.1 0 0 1-1.713-4.967L226.692 9.141c1.656.55 3.301 1.125 4.935 1.723l-221.5 222.894ZM18.155 252.44a173.983 173.983 0 0 1-2.175-4.502L245.72 16.755a171.56 171.56 0 0 1 4.473 2.188L18.155 252.44ZM27.888 269.407a175.49 175.49 0 0 1-2.583-4.091L262.988 26.139c1.368.847 2.723 1.714 4.065 2.599L27.888 269.407ZM39.168 284.817a173.977 173.977 0 0 1-2.96-3.712L278.679 37.11c1.244.976 2.474 1.969 3.689 2.978l-243.2 244.729ZM51.912 298.754a174.74 174.74 0 0 1-3.32-3.348L292.89 49.571a174.152 174.152 0 0 1 3.327 3.342L51.912 298.754ZM66.1 311.237a174.123 174.123 0 0 1-3.684-2.984l243.241-244.77a174.342 174.342 0 0 1 2.965 3.706L66.099 311.237ZM81.765 322.234a172.453 172.453 0 0 1-4.059-2.605l239.255-240.76c.882 1.348 1.745 2.71 2.59 4.084L81.765 322.234ZM99.006 331.645c-1.501-.711-2.99-1.443-4.466-2.196L326.72 95.808a172.535 172.535 0 0 1 2.182 4.494L99.006 331.645ZM118.002 339.29a172.923 172.923 0 0 1-4.927-1.732L334.779 114.46a173.589 173.589 0 0 1 1.72 4.958L118.002 339.29ZM139.057 344.863a171.346 171.346 0 0 1-5.48-1.176L340.87 135.091c.418 1.828.807 3.666 1.168 5.515L139.057 344.863ZM162.689 347.844a172.903 172.903 0 0 1-6.19-.461l188.043-189.226c.189 2.066.342 4.143.458 6.229L162.689 347.844ZM189.868 347.253c-2.391.241-4.797.432-7.216.572l162.33-163.351a175.2 175.2 0 0 1-.569 7.262L189.868 347.253ZM223.135 340.537a170.58 170.58 0 0 1-9.181 2.549l126.318-127.112a173.708 173.708 0 0 1-2.533 9.239L223.135 340.537ZM278.57 311.515a173.062 173.062 0 0 1-20.231 13.668l64.142-64.545a174.297 174.297 0 0 1-13.583 20.358l-30.328 30.519Z\" \/>\n            <\/g>\n        <\/svg>\n                <div class=\"relative grid gap-8 md:gap-6\">\n                            <p class=\"text-ocs-gray-nav text-[26px] md:text-[22px] font-medium leading-[34px] md:leading-[30px] -tracking-[0.5px] text-crop\">\n                    \u201cCRAC systems are very practical for smaller environments. They are self-contained, which makes them easier to deploy, especially in facilities without a central chilled water system.\u201d                <\/p>\n                                        <div class=\"flex items-center gap-3 md:gap-2\">\n                                            <img decoding=\"async\" src=\"https:\/\/ucarecdn.com\/490f9c04-e75c-4e86-a05b-ef5fdee996f4\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/300x300\/\" alt=\"avatar\" class=\"w-16 h-16 rounded-full object-cover border-[3px] border-[#FDFDFE]\" \/>\n                                                                <div>\n                                                                                                <p class=\"font-medium text-base text-ocs-blue-navy\">\n                                        Mr. Dheventhiran Krisnan                                    <\/p>\n                                                                                                                        <p class=\"text-sm text-ocs-blue-navy\">\n                                    Data Centre Subject Matter Expert                                <\/p>\n                                                    <\/div>\n                                    <\/div>\n                    <\/div>\n    <\/section>\n\n\n    <section x-data=\"video\" id=\"block_acf-block-69f981435f43d\" class=\"grid gap-4\">\n                    <picture>\n                <source srcset=\"https:\/\/ucarecdn.com\/3bb938bb-445b-44e5-ab5b-778819390196\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/768x768\/\" media=\"(max-width: 640px)\" type=\"image\/jpg\">\n                <source srcset=\"https:\/\/ucarecdn.com\/3bb938bb-445b-44e5-ab5b-778819390196\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/1024x1024\/\" type=\"image\/jpg\">\n                <img decoding=\"async\" src=\"https:\/\/ucarecdn.com\/3bb938bb-445b-44e5-ab5b-778819390196\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/1024x1024\/\" class=\"w-full h-full object-cover object-center rounded-3xl\" alt=\"\">\n            <\/picture>\n                    <\/section>\n\n\n    <section \n        id=\"block_acf-block-69f981435f457\" \n        class=\"text-[#475467] prose-h1:font-semibold prose-h1:mb-10 prose-headings:font-medium prose prose-ocs prose-li:pl-0 w-full max-w-none\n        \"\n        style=\"background-color: #FFFFFF;\"\n    >\n        <h4>Where CRAC systems are typically used:<\/h4>\n<ul>\n<li>Small to mid-sized data centres<\/li>\n<li><a href=\"https:\/\/ocs.com\/my\/services\/facilities-management\/\">Facilities<\/a> without chilled water infrastructure<\/li>\n<li>Lower-density environments (typically below 200 kW load)<\/li>\n<\/ul>\n<p><strong>Key characteristics:<\/strong><\/p>\n<ul>\n<li>Easier installation and deployment<\/li>\n<li>Lower upfront cost<\/li>\n<li>Independent operation<\/li>\n<li>Higher maintenance frequency due to mechanical components<\/li>\n<\/ul>\n<p>CRAC systems are commonly selected where flexibility and simplicity are required.<\/p>\n<h3>CRAH Systems are Built for High-Density Environments<\/h3>\n<p>CRAH systems use chilled water from a central plant to cool air through coils and fans. They are typically deployed in larger, high-demand facilities.<\/p>\n<p>Mr. Dheventhiran explains:<\/p>\n    <\/section>\n\n\n    <section id=\"block_acf-block-69f981435f476\" class=\"px-4 py-8 md:px-8 relative overflow-hidden rounded-3xl\" style=\"background-color: #F7FBF7 ;\">\n        <svg class=\"text-[#d6ead6] absolute -top-[31px] -right-[52px] w-[280px] h-[280px] md:-top-[35px] md:-right-[68px]\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewBox=\"0 0 345 348\" preserveAspectRatio=\"none\">\n            <g fill=\"currentColor\" opacity=\".1\">\n                <path d=\"M37.763 65.46 64.38 38.674a173.12 173.12 0 0 1 21.277-14.72L23.135 86.87a174.285 174.285 0 0 1 14.628-21.41ZM4.894 131.987c.777-3.131 1.639-6.228 2.582-9.289l113.785-114.5a170.68 170.68 0 0 1 9.231-2.6L4.894 131.987ZM.068 163.603c.147-2.442.344-4.87.59-7.284L154.672 1.336c2.399-.248 4.812-.446 7.239-.594L.068 163.603ZM.444 189.985A176.37 176.37 0 0 1 0 183.742L181.924.674a173.1 173.1 0 0 1 6.204.447L.444 189.985ZM4.071 213.09c-.415-1.83-.8-3.672-1.158-5.524L205.6 3.606c1.841.359 3.671.747 5.49 1.165L4.071 213.09ZM10.127 233.758a173.1 173.1 0 0 1-1.713-4.967L226.692 9.141c1.656.55 3.301 1.125 4.935 1.723l-221.5 222.894ZM18.155 252.44a173.983 173.983 0 0 1-2.175-4.502L245.72 16.755a171.56 171.56 0 0 1 4.473 2.188L18.155 252.44ZM27.888 269.407a175.49 175.49 0 0 1-2.583-4.091L262.988 26.139c1.368.847 2.723 1.714 4.065 2.599L27.888 269.407ZM39.168 284.817a173.977 173.977 0 0 1-2.96-3.712L278.679 37.11c1.244.976 2.474 1.969 3.689 2.978l-243.2 244.729ZM51.912 298.754a174.74 174.74 0 0 1-3.32-3.348L292.89 49.571a174.152 174.152 0 0 1 3.327 3.342L51.912 298.754ZM66.1 311.237a174.123 174.123 0 0 1-3.684-2.984l243.241-244.77a174.342 174.342 0 0 1 2.965 3.706L66.099 311.237ZM81.765 322.234a172.453 172.453 0 0 1-4.059-2.605l239.255-240.76c.882 1.348 1.745 2.71 2.59 4.084L81.765 322.234ZM99.006 331.645c-1.501-.711-2.99-1.443-4.466-2.196L326.72 95.808a172.535 172.535 0 0 1 2.182 4.494L99.006 331.645ZM118.002 339.29a172.923 172.923 0 0 1-4.927-1.732L334.779 114.46a173.589 173.589 0 0 1 1.72 4.958L118.002 339.29ZM139.057 344.863a171.346 171.346 0 0 1-5.48-1.176L340.87 135.091c.418 1.828.807 3.666 1.168 5.515L139.057 344.863ZM162.689 347.844a172.903 172.903 0 0 1-6.19-.461l188.043-189.226c.189 2.066.342 4.143.458 6.229L162.689 347.844ZM189.868 347.253c-2.391.241-4.797.432-7.216.572l162.33-163.351a175.2 175.2 0 0 1-.569 7.262L189.868 347.253ZM223.135 340.537a170.58 170.58 0 0 1-9.181 2.549l126.318-127.112a173.708 173.708 0 0 1-2.533 9.239L223.135 340.537ZM278.57 311.515a173.062 173.062 0 0 1-20.231 13.668l64.142-64.545a174.297 174.297 0 0 1-13.583 20.358l-30.328 30.519Z\" \/>\n            <\/g>\n        <\/svg>\n                <div class=\"relative grid gap-8 md:gap-6\">\n                            <p class=\"text-ocs-gray-nav text-[26px] md:text-[22px] font-medium leading-[34px] md:leading-[30px] -tracking-[0.5px] text-crop\">\n                    \u201cFor larger facilities, CRAH systems are the preferred choice. They are more energy efficient and can handle much higher heat loads, which is critical in today\u2019s high-density environments.\u201d                <\/p>\n                                <\/div>\n    <\/section>\n\n\n    <section \n        id=\"block_acf-block-69f981435f499\" \n        class=\"text-[#475467] prose-h1:font-semibold prose-h1:mb-10 prose-headings:font-medium prose prose-ocs prose-li:pl-0 w-full max-w-none\n        \"\n        style=\"background-color: #FFFFFF;\"\n    >\n        <h4>Where CRAH systems are typically used:<\/h4>\n<ul>\n<li>Large-scale or hyperscale data centres<\/li>\n<li>High-density environments<\/li>\n<li>Facilities with central chiller systems<\/li>\n<\/ul>\n<p><strong>Key characteristics:<\/strong><\/p>\n<ul>\n<li>Higher energy efficiency at scale<\/li>\n<li>Strong cooling capacity<\/li>\n<li>Lower long-term operational cost<\/li>\n<li>Dependent on central chilled water systems<\/li>\n<\/ul>\n<p>CRAH systems support environments where cooling demand is continuous and significantly higher.<\/p>\n<h3>CRAC vs CRAH: Key Differences<\/h3>\n<table>\n<thead>\n<tr>\n<td><strong>Factor<\/strong><\/td>\n<td><strong>CRAC<\/strong><\/td>\n<td><strong>CRAH<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Cooling method<\/td>\n<td>Refrigerant-based<\/td>\n<td>Chilled water-based<\/td>\n<\/tr>\n<tr>\n<td>Best for<\/td>\n<td>Smaller facilities<\/td>\n<td>Large, high-density facilities<\/td>\n<\/tr>\n<tr>\n<td>Infrastructure<\/td>\n<td>Standalone<\/td>\n<td>Requires central chiller plant<\/td>\n<\/tr>\n<tr>\n<td>Efficiency<\/td>\n<td>Moderate<\/td>\n<td>High at scale<\/td>\n<\/tr>\n<tr>\n<td>Maintenance<\/td>\n<td>More frequent<\/td>\n<td>System-dependent<\/td>\n<\/tr>\n<tr>\n<td>Cost<\/td>\n<td>Lower upfront<\/td>\n<td>Lower long-term<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n    <\/section>\n\n\n    <section id=\"block_acf-block-69f981435f4c2\" class=\"grid gap-10 lg:gap-4 grid-cols-1  lg:grid-cols-2 \">\n                    <div class=\"grid gap-4\">\n                <picture class=\"h-[400px]\">\n                    <source srcset=\"https:\/\/ucarecdn.com\/a3e265d4-640a-4f6c-962f-acc769483211\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/768x768\/\" media=\"(max-width: 640px)\" type=\"image\/jpg\">\n                    <source srcset=\"https:\/\/ucarecdn.com\/a3e265d4-640a-4f6c-962f-acc769483211\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/1024x1024\/\" type=\"image\/jpg\">\n                    <img decoding=\"async\" src=\"https:\/\/ucarecdn.com\/a3e265d4-640a-4f6c-962f-acc769483211\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/1024x1024\/\" class=\"w-full h-full object-cover object-center rounded-3xl\" alt=\"Large metallic pipes and industrial cooling units on a rooftop, set against a clear blue sky. The image suggests a modern HVAC or industrial refrigeration system.\">\n                <\/picture>\n\n                                    <div class=\"prose text-ocs-gray-nav text-sm\">\n                        <p>CRAH (Computer Room Air Handler)<\/p>\n                    <\/div>\n                            <\/div>\n                            <div class=\"grid gap-4\">\n                <picture class=\"h-[400px]\">\n                    <source srcset=\"https:\/\/ucarecdn.com\/32e29a42-b8f1-44cf-bbe2-0153df0826d7\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/768x768\/\" media=\"(max-width: 640px)\" type=\"image\/jpg\">\n                    <source srcset=\"https:\/\/ucarecdn.com\/32e29a42-b8f1-44cf-bbe2-0153df0826d7\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/1024x1024\/\" type=\"image\/jpg\">\n                    <img decoding=\"async\" src=\"https:\/\/ucarecdn.com\/32e29a42-b8f1-44cf-bbe2-0153df0826d7\/-\/format\/auto\/-\/quality\/smart\/-\/preview\/1024x1024\/\" class=\"w-full h-full object-cover object-center rounded-3xl\" alt=\"A row of outdoor air conditioning units lined up on a rooftop, with white metal casings and large circular fans visible on the front panels. The units are installed on raised black platforms.\">\n                <\/picture>\n\n                                    <div class=\"prose text-ocs-gray-nav text-sm\">\n                        <p>CRAC (Computer Room Air Conditioner)<\/p>\n                    <\/div>\n                            <\/div>\n            <\/section>\n\n\n    <section \n        id=\"block_acf-block-69f981435f4ea\" \n        class=\"text-[#475467] prose-h1:font-semibold prose-h1:mb-10 prose-headings:font-medium prose prose-ocs prose-li:pl-0 w-full max-w-none\n        \"\n        style=\"background-color: #FFFFFF;\"\n    >\n        <h3>Beyond Equipment: What Keeps Cooling Systems Reliable<\/h3>\n<p>Cooling performance depends on more than system selection. It relies on how systems are managed, monitored, and maintained over time.<\/p>\n<ol>\n<li><strong> Airflow Management<\/strong><\/li>\n<\/ol>\n<p>Airflow is a key factor in cooling efficiency.<\/p>\n<ul>\n<li>Proper containment reduces hotspots<\/li>\n<li>Balanced airflow improves system performance<\/li>\n<li>Poor airflow increases energy consumption and risk<\/li>\n<\/ul>\n<ol start=\"2\">\n<li><strong> System Integration<\/strong><\/li>\n<\/ol>\n<p>Cooling systems are part of a wider infrastructure, including:<\/p>\n<ul>\n<li>Chiller plants<\/li>\n<li>Building Management Systems (BMS)<\/li>\n<li>Power and redundancy systems<\/li>\n<\/ul>\n<p>For CRAH systems, overall performance depends heavily on the stability of the central cooling plant.<\/p>\n<ol start=\"3\">\n<li><strong> Maintenance Strategy<\/strong><\/li>\n<\/ol>\n<p>Cooling systems require structured maintenance approaches, including:<\/p>\n<ul>\n<li>Planned preventive maintenance (PPM)<\/li>\n<li>Condition-based monitoring<\/li>\n<li>Predictive maintenance using sensors and data<\/li>\n<\/ul>\n<p>These approaches help ensure systems operate reliably across their lifecycle and reduce the likelihood of failure<\/p>\n<ol start=\"4\">\n<li><strong> Risk Management in Live Environments<\/strong><\/li>\n<\/ol>\n<p>Common risks in data centres include:<\/p>\n<ul>\n<li>Water leakage<\/li>\n<li>Temperature fluctuations<\/li>\n<li>Equipment strain under high loads<\/li>\n<\/ul>\n<p>As Mr. Dheventhiran highlights, these are not theoretical risks but operational realities that must be actively managed.<\/p>\n<h3>The Role of Operations in Maintaining Stability<\/h3>\n<p>Cooling reliability is shaped by how consistently systems are managed on site.<\/p>\n<p>Mr. Dheventhiran notes:<\/p>\n    <\/section>\n\n\n    <section id=\"block_acf-block-69f981435f513\" class=\"px-4 py-8 md:px-8 relative overflow-hidden rounded-3xl\" style=\"background-color: #F7FBF7 ;\">\n        <svg class=\"text-[#d6ead6] absolute -top-[31px] -right-[52px] w-[280px] h-[280px] md:-top-[35px] md:-right-[68px]\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewBox=\"0 0 345 348\" preserveAspectRatio=\"none\">\n            <g fill=\"currentColor\" opacity=\".1\">\n                <path d=\"M37.763 65.46 64.38 38.674a173.12 173.12 0 0 1 21.277-14.72L23.135 86.87a174.285 174.285 0 0 1 14.628-21.41ZM4.894 131.987c.777-3.131 1.639-6.228 2.582-9.289l113.785-114.5a170.68 170.68 0 0 1 9.231-2.6L4.894 131.987ZM.068 163.603c.147-2.442.344-4.87.59-7.284L154.672 1.336c2.399-.248 4.812-.446 7.239-.594L.068 163.603ZM.444 189.985A176.37 176.37 0 0 1 0 183.742L181.924.674a173.1 173.1 0 0 1 6.204.447L.444 189.985ZM4.071 213.09c-.415-1.83-.8-3.672-1.158-5.524L205.6 3.606c1.841.359 3.671.747 5.49 1.165L4.071 213.09ZM10.127 233.758a173.1 173.1 0 0 1-1.713-4.967L226.692 9.141c1.656.55 3.301 1.125 4.935 1.723l-221.5 222.894ZM18.155 252.44a173.983 173.983 0 0 1-2.175-4.502L245.72 16.755a171.56 171.56 0 0 1 4.473 2.188L18.155 252.44ZM27.888 269.407a175.49 175.49 0 0 1-2.583-4.091L262.988 26.139c1.368.847 2.723 1.714 4.065 2.599L27.888 269.407ZM39.168 284.817a173.977 173.977 0 0 1-2.96-3.712L278.679 37.11c1.244.976 2.474 1.969 3.689 2.978l-243.2 244.729ZM51.912 298.754a174.74 174.74 0 0 1-3.32-3.348L292.89 49.571a174.152 174.152 0 0 1 3.327 3.342L51.912 298.754ZM66.1 311.237a174.123 174.123 0 0 1-3.684-2.984l243.241-244.77a174.342 174.342 0 0 1 2.965 3.706L66.099 311.237ZM81.765 322.234a172.453 172.453 0 0 1-4.059-2.605l239.255-240.76c.882 1.348 1.745 2.71 2.59 4.084L81.765 322.234ZM99.006 331.645c-1.501-.711-2.99-1.443-4.466-2.196L326.72 95.808a172.535 172.535 0 0 1 2.182 4.494L99.006 331.645ZM118.002 339.29a172.923 172.923 0 0 1-4.927-1.732L334.779 114.46a173.589 173.589 0 0 1 1.72 4.958L118.002 339.29ZM139.057 344.863a171.346 171.346 0 0 1-5.48-1.176L340.87 135.091c.418 1.828.807 3.666 1.168 5.515L139.057 344.863ZM162.689 347.844a172.903 172.903 0 0 1-6.19-.461l188.043-189.226c.189 2.066.342 4.143.458 6.229L162.689 347.844ZM189.868 347.253c-2.391.241-4.797.432-7.216.572l162.33-163.351a175.2 175.2 0 0 1-.569 7.262L189.868 347.253ZM223.135 340.537a170.58 170.58 0 0 1-9.181 2.549l126.318-127.112a173.708 173.708 0 0 1-2.533 9.239L223.135 340.537ZM278.57 311.515a173.062 173.062 0 0 1-20.231 13.668l64.142-64.545a174.297 174.297 0 0 1-13.583 20.358l-30.328 30.519Z\" \/>\n            <\/g>\n        <\/svg>\n                <div class=\"relative grid gap-8 md:gap-6\">\n                            <p class=\"text-ocs-gray-nav text-[26px] md:text-[22px] font-medium leading-[34px] md:leading-[30px] -tracking-[0.5px] text-crop\">\n                    \u201cReliability is not achieved through equipment alone. It is the consistency of operations and the attention to detail on site that keeps a data centre running smoothly.\u201d                <\/p>\n                                <\/div>\n    <\/section>\n\n\n    <section \n        id=\"block_acf-block-69f981435f52f\" \n        class=\"text-[#475467] prose-h1:font-semibold prose-h1:mb-10 prose-headings:font-medium prose prose-ocs prose-li:pl-0 w-full max-w-none\n        \"\n        style=\"background-color: #FFFFFF;\"\n    >\n        <p>OCS teams support data centre environments through:<\/p>\n<ul>\n<li>Routine inspection and maintenance of CRAC and CRAH systems<\/li>\n<li>Airflow optimisation and containment strategies<\/li>\n<li>Real-time monitoring via CAFM, BMS, and IoT systems<\/li>\n<li>Rapid fault detection and response<\/li>\n<\/ul>\n<p>This reflects a broader <a href=\"https:\/\/ocs.com\/my\/services\/hard-services\/\">hard services<\/a> approach where systems are managed to operate safely, efficiently, and reliably over time.<\/p>\n<h3>Supporting Uptime Through Structured Operations<\/h3>\n<p>In data centres, cooling is directly linked to uptime.<\/p>\n<p>Maintaining stable environments requires:<\/p>\n<ul>\n<li>Preventive maintenance discipline<\/li>\n<li>Clear escalation and response protocols<\/li>\n<li>Continuous monitoring of system performance<\/li>\n<li>Skilled teams operating within defined procedures<\/li>\n<\/ul>\n<p>Whether managing smaller CRAC-based facilities or large CRAH-supported environments, the objective is always to maintain conditions that allow critical infrastructure to operate without disruption.<\/p>\n    <\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":75,"featured_media":10000022490,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[237,238,230,236,19],"tags":[278,232],"country":[254],"class_list":["post-16825","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data-centres","category-energy-services","category-facilities-management","category-leadership","category-news-type","tag-data-centre","tag-facilities-management","country-malaysia"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>In Data Centres, Keeping Cool Where It Matters Most - OCS - Malaysia<\/title>\n<meta name=\"description\" content=\"Explore CRAC vs CRAH systems in data centres, their key differences, applications, and impacts to ensure stable environments and uptime\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In Data Centres, Keeping Cool Where It Matters Most\" \/>\n<meta property=\"og:description\" content=\"Explore CRAC vs CRAH systems in data centres, their key differences, applications, and impacts to ensure stable environments and uptime\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/\" \/>\n<meta property=\"og:site_name\" content=\"OCS - Malaysia\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-05T05:33:55+00:00\" \/>\n<meta name=\"author\" content=\"jeremydesilva\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"jeremydesilva\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/\"},\"author\":{\"name\":\"jeremydesilva\",\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/#\\\/schema\\\/person\\\/294e1f3b0dd740451f9b783ef16dc2f0\"},\"headline\":\"In Data Centres, Keeping Cool Where It Matters Most\",\"datePublished\":\"2026-05-05T05:33:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/\"},\"wordCount\":9,\"image\":{\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ucarecdn.com\\\/81eaf058-dba8-4a1c-8c41-49c73b8b7f47\\\/\",\"keywords\":[\"Data Centre\",\"Facilities Management\"],\"articleSection\":[\"Data Centres\",\"Energy Services\",\"Facilities Management\",\"Leadership\",\"News\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/\",\"url\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/\",\"name\":\"In Data Centres, Keeping Cool Where It Matters Most - OCS - Malaysia\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ucarecdn.com\\\/81eaf058-dba8-4a1c-8c41-49c73b8b7f47\\\/\",\"datePublished\":\"2026-05-05T05:33:55+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/#\\\/schema\\\/person\\\/294e1f3b0dd740451f9b783ef16dc2f0\"},\"description\":\"Explore CRAC vs CRAH systems in data centres, their key differences, applications, and impacts to ensure stable environments and uptime\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/#primaryimage\",\"url\":\"https:\\\/\\\/ucarecdn.com\\\/81eaf058-dba8-4a1c-8c41-49c73b8b7f47\\\/\",\"contentUrl\":\"https:\\\/\\\/ucarecdn.com\\\/81eaf058-dba8-4a1c-8c41-49c73b8b7f47\\\/\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/news\\\/in-data-centres-keeping-cool-where-it-matters-most\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ocs.com\\\/my\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"In Data Centres, Keeping Cool Where It Matters Most\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/#website\",\"url\":\"https:\\\/\\\/ocs.com\\\/my\\\/\",\"name\":\"OCS - Malaysia\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ocs.com\\\/my\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/ocs.com\\\/my\\\/#\\\/schema\\\/person\\\/294e1f3b0dd740451f9b783ef16dc2f0\",\"name\":\"jeremydesilva\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"In Data Centres, Keeping Cool Where It Matters Most - OCS - Malaysia","description":"Explore CRAC vs CRAH systems in data centres, their key differences, applications, and impacts to ensure stable environments and uptime","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/","og_locale":"en_GB","og_type":"article","og_title":"In Data Centres, Keeping Cool Where It Matters Most","og_description":"Explore CRAC vs CRAH systems in data centres, their key differences, applications, and impacts to ensure stable environments and uptime","og_url":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/","og_site_name":"OCS - Malaysia","article_published_time":"2026-05-05T05:33:55+00:00","author":"jeremydesilva","twitter_card":"summary_large_image","twitter_misc":{"Written by":"jeremydesilva","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/#article","isPartOf":{"@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/"},"author":{"name":"jeremydesilva","@id":"https:\/\/ocs.com\/my\/#\/schema\/person\/294e1f3b0dd740451f9b783ef16dc2f0"},"headline":"In Data Centres, Keeping Cool Where It Matters Most","datePublished":"2026-05-05T05:33:55+00:00","mainEntityOfPage":{"@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/"},"wordCount":9,"image":{"@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/#primaryimage"},"thumbnailUrl":"https:\/\/ucarecdn.com\/81eaf058-dba8-4a1c-8c41-49c73b8b7f47\/","keywords":["Data Centre","Facilities Management"],"articleSection":["Data Centres","Energy Services","Facilities Management","Leadership","News"],"inLanguage":"en-GB"},{"@type":"WebPage","@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/","url":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/","name":"In Data Centres, Keeping Cool Where It Matters Most - OCS - Malaysia","isPartOf":{"@id":"https:\/\/ocs.com\/my\/#website"},"primaryImageOfPage":{"@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/#primaryimage"},"image":{"@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/#primaryimage"},"thumbnailUrl":"https:\/\/ucarecdn.com\/81eaf058-dba8-4a1c-8c41-49c73b8b7f47\/","datePublished":"2026-05-05T05:33:55+00:00","author":{"@id":"https:\/\/ocs.com\/my\/#\/schema\/person\/294e1f3b0dd740451f9b783ef16dc2f0"},"description":"Explore CRAC vs CRAH systems in data centres, their key differences, applications, and impacts to ensure stable environments and uptime","breadcrumb":{"@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/#primaryimage","url":"https:\/\/ucarecdn.com\/81eaf058-dba8-4a1c-8c41-49c73b8b7f47\/","contentUrl":"https:\/\/ucarecdn.com\/81eaf058-dba8-4a1c-8c41-49c73b8b7f47\/"},{"@type":"BreadcrumbList","@id":"https:\/\/ocs.com\/my\/news\/in-data-centres-keeping-cool-where-it-matters-most\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ocs.com\/my\/"},{"@type":"ListItem","position":2,"name":"In Data Centres, Keeping Cool Where It Matters Most"}]},{"@type":"WebSite","@id":"https:\/\/ocs.com\/my\/#website","url":"https:\/\/ocs.com\/my\/","name":"OCS - Malaysia","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ocs.com\/my\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Person","@id":"https:\/\/ocs.com\/my\/#\/schema\/person\/294e1f3b0dd740451f9b783ef16dc2f0","name":"jeremydesilva"}]}},"_links":{"self":[{"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/posts\/16825","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/users\/75"}],"replies":[{"embeddable":true,"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/comments?post=16825"}],"version-history":[{"count":33,"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/posts\/16825\/revisions"}],"predecessor-version":[{"id":16883,"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/posts\/16825\/revisions\/16883"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ocs.com\/my\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/media?parent=16825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/categories?post=16825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/tags?post=16825"},{"taxonomy":"country","embeddable":true,"href":"https:\/\/ocs.com\/my\/wp-json\/wp\/v2\/country?post=16825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}