Data center commissioning 101
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In this presentation Chris Crosby provides an overview of the data center commissioning process and its importance for all data center end users
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Project Information:
Project Name: Company Name:
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Sl. No Description Yes No N/A Comments
DBs/ SDBs
1. Is earth conducted continued up to DB/ SDB?
2. Whether DBs & extension boards are protected from rain/ water?
3. Is there any overloading of DBs/ SDBs?
4. Are correct rated Circuit breakers provided in all main boards and sub-boards?
5. Is energized wiring in junction boxes, Circuit board panels & similar places covered all times?
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16. Whether the machine supply cable has industrial type socket and plug?
17. Are all metal parts of electrical equipment and light fittings/ accessories grounded?
18. Is there any shed/ cover for machines?
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Remarks:
Inspected By: Signature:
Reviewed By HSE Manager / In charge : Signature:
Noted by Project Leader : Signature:
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When developing data center energy-use estimations, engineers must account for all sources of energy use in the facility. Most energy consumption is obvious: computers, cooling plant and related equipment, lighting, and other miscellaneous electrical loads. Designing efficient and effective data centers is a top priority for consulting engineers. Cooling is a large portion of data center energy use, second only to the IT load. Although there are several options to help maximize HVAC efficiency and minimize energy consumption, data centers come in many shapes, sizes, and configurations. By developing a deep understanding of their client’s data center HVAC requirements, consulting engineers can help maintain the necessary availability level of mission critical applications while reducing energy consumption.
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How to work safely while working with electricity or electrical equipment. what are the safety rules to be followed? what is the safe system of work while working on electrical equipment. what kind of safety components to be used in place?
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The tall wiring fences that surround electrical substations suggest that such places are not accessible to the public. Let it be known that substations are extremely dangerous and the safety signs will tell you that. The signs read as either “Danger”, “Caution”, “Warning”, “No Entry”, or “High Voltage Risk Ahead”. The various machineries inside the facility carry high voltage risks, and trespassers who dare to come near the place put themselves in danger.
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Fire detection and alarm systems are installed to notify occupants of a fire, summon assistance to fight fires, and initiate automatic suppression systems. There are different types of automatic alarm initiating devices like heat, smoke, and flame detectors that sense fire. Indicating devices like audible alarms and visible strobes alert people of a fire. Automatic alarm systems transmit alarm signals off-site to notify emergency responders. These systems are supervised to ensure proper operation and may include auxiliary functions to support firefighting and safety.
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- How single-phase 240V power is supplied to homes from the electricity board
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- How the supply passes through the meter and consumer unit to circuit breakers/fuses
- Typical circuits for lighting, power outlets, and high-load appliances like cookers
- Protection methods like insulation, earthing, and circuit protection devices
- Requirements for busbar systems in high-rise buildings to distribute power safely
- Recommended illuminance levels for different types of tasks and areas.
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The document discusses earthing arrangements and protection against electric shock. It defines key terms like earthing, protective conductors, and fault conditions. It describes the three common earthing arrangements - TT, TN-S, and TN-C-S systems. For each system, it explains the wiring configuration and how fault currents flow. Protection methods like RCDs and their operation are also covered to prevent electric shock. Diagrams and formulas are provided to calculate touch voltages and ensure safety.
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This document provides an overview of electrical safety and risk assessment. It discusses common electrical hazards like electric shock, burns, fires and explosions. The key causes of electrical accidents are identified as drilling into electrical cables, using defective equipment, and failure to follow lockout/tagout procedures. Electrical safety measures discussed include proper wiring, use of circuit breakers and disconnects, guarding live parts, adequate illumination and headroom, and grounding/bonding principles. Personal protective equipment and safety signage are also addressed.
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This document presents ABB's SafeLink CB, an SF6 insulated ring main unit for secondary distribution networks up to 12kV. Some key details:
- It is a compact and robust switchgear solution available in non-extensible and extensible configurations for applications like buildings, industries and renewable power plants.
- Modules include a cable/ring switch, vacuum circuit breaker, and earthing switches. It provides IP54 protection and meets relevant IEC standards.
- The SF6 gas insulation and vacuum interrupters provide reliability while maintenance-free operation and a 95% recyclable design offer sustainability benefits over alternative switchgear.
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ELECTRICAL INSTALLATIONS INSPECTION CHECKLIST Form # HSEQ - EIIC Rev 7.docx
Project Information:
Project Name: Company Name:
Location: Date :
Sl. No Description Yes No N/A Comments
DBs/ SDBs
1. Is earth conducted continued up to DB/ SDB?
2. Whether DBs & extension boards are protected from rain/ water?
3. Is there any overloading of DBs/ SDBs?
4. Are correct rated Circuit breakers provided in all main boards and sub-boards?
5. Is energized wiring in junction boxes, Circuit board panels & similar places covered all times?
CABLES
6. Whether the condition of cable is checked?
7. Are cables received checked for insulation resistance before using them?
8. Are all main cables taken either underground/ overhead?
9. Are main cables protected from sharp/ heavy materials?
10. Is any improper jointing of cable identified?
11. Are all plugs and sockets in good condition?
RCD (ELCB)
12. Is the connections routed through 30mA RCD?
13. EARTHING
14. Are main DB, Generator and other panel’s ear thing done?
15. Earth resistance checked and found within limits?
ELECTRICALLY OPERATED MACHINES/ ACCESSORIES
16. Whether the machine supply cable has industrial type socket and plug?
17. Are all metal parts of electrical equipment and light fittings/ accessories grounded?
18. Is there any shed/ cover for machines?
19. Are flood lights/ task lights fixed properly away from combustibles?
20. Others if any:
Remarks:
Inspected By: Signature:
Reviewed By HSE Manager / In charge : Signature:
Noted by Project Leader : Signature:
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We Provide Complete Automation Solution for Humidification Plants and We Supply AHU Control Panel,DDC Control Panel,Digital Thermostat,Humidity & Temperature sensors,Control Valves,Liquid Analyser,Gas Detector,Damper Actuators ,Vfd Drives,Monitoring & Recording system,and so on..
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The document discusses different levels of software testing including unit testing, integration testing, system testing, and user acceptance testing. It provides details on unit testing, describing it as testing individual program units or components. The document outlines the unit testing process and best practices for unit testing code including defining test criteria and data, conducting tests, and generating test reports. It also covers integration testing and compares top-down versus bottom-up integration testing strategies.
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For more information, visit: https://www.mindsmapped.com/courses/quality-assurance/quality-assurance-training-learn-manual-and-automation-testing/
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In this session you will learn:
Types of Testing
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https://www.mindsmapped.com/courses/quality-assurance/software-testing-tutorial/
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Types of Testing
In this session you will learn:
Types of Testing
Start and Stop of Testing
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Load testing is an important part of the performance engineering process. However the industry is changing and load testing should adjust to these changes - a stereotypical, last-moment performance check is not enough anymore. There are multiple aspects of load testing - such as environment, load generation, testing approach, life-cycle integration, feedback and analysis - and none remains static. This presentation discusses how performance testing is adapting to industry trends to remain relevant and bring value to the table.
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Unlocking the full potential of Google Analytics is crucial for understanding and optimizing your website’s performance. This guide dives deep into the essential aspects of Google Analytics, from analyzing traffic sources to understanding user demographics and tracking user engagement.
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如果您处于以下几种情况：
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◇企事业单位必须要求办理的
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◇申请留学生创业基金
留信网认证的作用:
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2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
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办理毕业证(NYU毕业证)纽约大学毕业证成绩单官方原版办理
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◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆
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一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】
◇面对父母的压力，希望尽快拿到；
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◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
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◇申请留学生创业基金
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3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
学历顾问：微信：176555708
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购买澳大利亚国立大学毕业证>【微信176555708】办理澳大利亚国立大学毕业证成绩单【微信176555708】Adelaide毕业证成绩单Adelaide学历证书Adelaide文凭【Adelaide毕业套号文凭网认证澳大利亚国立大学毕业证成绩单】【哪里买澳大利亚国立大学毕业证文凭Adelaide成绩学校快递邮寄信封】【开版澳大利亚国立大学文凭】Adelaide留信认证本科硕士学历认证(诚招代理)微信：176555708办理国外高校毕业证成绩单文凭学位证,真实使馆公证（留学回国人员证明）真实留信网认证国外学历学位认证雅思代考国外学校代申请名校保录开请假条改GPA改成绩ID卡
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4毕业证成绩单电子版您确认信息无误之后安排制作成品；
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6快递给客户（国内顺丰国外DHLUPS等快读邮寄）
-办理真实使馆公证（即留学回国人员证明）
-办理各国各大学文凭（世界名校一对一专业服务,可全程监控跟踪进度）
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（详情请加一下 文凭顾问+微信:176555708）欢迎咨询！
Discover the benefits of outsourcing SEO to India
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成绩单ps(UST毕业证)圣托马斯大学毕业证成绩单快速办理
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◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆
【主营项目】
一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
学历顾问：微信：176555708
Should Repositories Participate in the Fediverse?
Presentation for OR2024 making the case that repositories could play a part in the "fediverse" of distributed social applications
学位认证网(DU毕业证)迪肯大学毕业证成绩单一比一原版制作
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degree，Transcripts（一对一服务包括毕业院长签字,专业课程,学位类型,专业或教育领域,以及毕业日期.不要忽视这些细节.这两份文件同样重要!毕业证成绩单文凭留信网学历认证！）如果您是以下情况，我们都能竭诚为您解决实际问题：【公司采用定金+余款的付款流程，以最大化保障您的利益，让您放心无忧】
1、在校期间，因各种原因未能顺利毕业，拿不到官方迪肯大学毕业证+微信176555708；
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3、不清楚流程以及材料该如何准备；
4、回国时间很长，忘记办理毕业证丢失 学历认证《迪肯大学毕业证》微信176555708《DU学位证书购买》
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本科毕业证书扫描件的；
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1.如果您只是为了的应付父母亲戚朋友看下迪肯大学毕业证，那么办理一份学位即可
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诚招代理：本公司诚聘当地合作代理人员，如果你有业余时间，有兴趣就请联系我们。
办理毕业证(UPenn毕业证)宾夕法尼亚大学毕业证成绩单快速办理
官方原版办理宾夕法尼亚大学毕业证【微信176555708】学历认证怎么做：原版仿制宾夕法尼亚大学电子版成绩单毕业证认证【宾夕法尼亚大学毕业证成绩单】、宾夕法尼亚大学文凭证书成绩单复刻offer录取通知书、购买UPenn圣力嘉学院本科毕业证、【宾夕法尼亚大学毕业证办理UPenn毕业证书哪里买】、宾夕法尼亚大学 Offer在线办理UPenn Offer宾夕法尼亚大学Bachloer Degree。（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆
【主营项目】
一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
学历顾问：微信：176555708
存档可查的(USC毕业证)南加利福尼亚大学毕业证成绩单制做办理
精仿办理南加利福尼亚大学毕业证成绩单（【微信176555708】）毕业证学历认证OFFER专卖国外文凭学历学位证书办理澳洲文凭|澳洲毕业证,澳洲学历认证,澳洲成绩单【微信176555708】 澳洲offer,教育部学历认证及使馆认证永久可查 ,国外毕业证|国外学历认证,国外学历文凭证书 USC毕业证，USC毕业证，USC毕业证，USC毕业证，USC毕业证，USC毕业证【微信176555708】，USC毕业证，专业为留学生办理毕业证、成绩单、使馆留学回国人员证明、教育部学历学位认证、录取通知书、Offer、（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆
【主营项目】
一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
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三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
学历顾问：微信：176555708
办理新西兰奥克兰大学毕业证学位证书范本原版一模一样
原版一模一样【微信：741003700 】【新西兰奥克兰大学毕业证学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdf
Quattordicesimo Meetup di Milano, tenutosi a Milano il 23 Maggio 2024 dalle ore 17:00 alle ore 18:30 in presenza e da remoto.
Abbiamo parlato di come Axpo Italia S.p.A. ha ridotto il technical debt migrando le proprie APIs da Mule 3.9 a Mule 4.4 passando anche da on-premises a CloudHub 1.0.
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Search results burying my post that used to rank before Google's March 2024 algorithm update.
重新申请毕业证书(RMIT毕业证)皇家墨尔本理工大学毕业证成绩单精仿办理
不能毕业办理【RMIT毕业证【微信176555708】皇家墨尔本理工大学文凭学历】【微信176555708】【皇家墨尔本理工大学文凭学历证书】【皇家墨尔本理工大学毕业证书与成绩单样本图片】毕业证书补办 Fake Degree做学费单【毕业证明信-推荐信】成绩单，录取通知书，Offer，在读证明，雅思托福成绩单，真实大使馆教育部认证，回国人员证明，留信网认证。网上存档永久可查！全套服务：皇家墨尔本理工大学皇家墨尔本理工大学本科学位证成绩单真实回国人员证明 #真实教育部认证。让您回国发展信心十足#铸就十年品质！信誉！实体公司！可以视频看办公环境样板如需办理真实可查可以先到公司面谈勿轻信小中介黑作坊！
可以提供皇家墨尔本理工大学钢印 #水印 #烫金 #激光防伪 #凹凸版 #最新版的毕业证 #百分之百让您绝对满意
印刷DHL快递毕业证 #成绩单7个工作日真实大使馆教育部认证1个月。为了达到高水准高效率
请您先以qq或微信的方式对我们的服务进行了解后如果有皇家墨尔本理工大学皇家墨尔本理工大学本科学位证成绩单帮助再进行电话咨询。
国外毕业证学位证成绩单如何办理：
1客户提供办理信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
2开始安排制作皇家墨尔本理工大学毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）。
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Data center commissioning 101
- 1. Commissioning 101 Chris Crosby CEO, Compass Datacenters Symposium – Columbus November 11, 2014
- 2. 2 Reliability and Availability There is a difference Availability •Probability that a system will work during required period Reliability •Probability that operations will be maintained during the period Foundations of the data center predictive performance model
- 3. Advancing Data Center Professionals The Bathtub Curve 3 of 23 FailureRate Time Failures Phase 1 Infant Mortality Period Phase 2 Random Failure Period Phase 3 Wearout Period The Life of a Facility
- 4. Advancing Data Center Professionals Smoothing the Curve 4 of 23 Commissioning Agent part of the design process Enable the agent to be involved in all 5 phases Roles: • Design Engineer— Views the data center from what makes it work perspective • Commissioning Agent—What makes it fail Need both to develop an effective commissioning test plan
- 5. Commissioning Levels • Level 1: Planning – Preparation for commissioning • Ex: Sequence of operations, scripts • Level 2: Factory Acceptance Test – Quality/performance acceptance prior to shipping • Level 3: Pre-functional Inspections – System installation, site acceptance testing • Level 4: Functional Testing – Testing to spec performance per component – “Phased expansion” data centers end here • Level 5: Integrated System Test – Full load testing of all systems – Ensure integrated operation and correct operation in case of failure 5 of 23
- 6. Level 5 Commissioning • Interlocking complexity – Static complexity: How is a system put together? – Dynamic complexity: How does change in one part affect other parts of the system? • Not equivalent or interchangeable • Data center systems may be simple but their interaction isn’t • Testing components isn’t enough – Have to test the way the interoperate 6 of 23
- 7. Level 5 Commissioning • Verifies reliability of design and compatibility among all critical systems – Electrical – Mechanical – Environmental • Must test in all modes: – Failure – Safety – Emergency • Test in real life scenarios—not planned • Goal: Determine is systems are in line with reliability targets 7 of 23
- 8. Level 5 Commissioning • More important now than ever – Emphasis on speed of delivery and TCO • Alternative to Level 5 commissioning – Learn by experience • Level 5 commissioning specifically combats the “domino effect” • “Lights out” – Phase doesn’t work • Ex: Arc flash – Low loads don’t perform the same as high loads 8 of 23
- 9. Summary • Insurance of Reliability and Availability • Smooths the bathtub curve • Five levels – Build upon each other • Phased builds only commission through Level 4 – No guarantee of system interoperability under load or in failure mode • Level 5 commissioning is essential • Tests interoperability of all systems • In all modes • Only way to ensure data center is suitable for its task 9 of 23