5 Data Center Standards Without standards enormous variation in data center designs Three commonly known tier systems Uptime Institute (1995) Syska Hennessy Group ANSI/TIA-942 or TIA-942 (2005, 2008, 2010)
Tia 942 Tier Pdf Download
30 Optimal Criticality Choosing a tier C Business characteristics Effect on system design 1 Typically small businesses Limited online presence Low dependence on IT Perceive downtime as a tolerable Inconvenience Numerous single points of failure in all aspects of design No generator if UPS has 8 minutes of backup time Generally unable to sustain more than a 10 minute power outage 2 Some online revenue generation Multiple servers Phone system vital to business Dependent on Some tolerance to scheduled downtime Some redundancy in power and cooling systems Generator backup Able to sustain 24 hour power outage Minimal thought to site selection Vapor barrier Formal data room separate from other areas 3 World-wide presence Majority of revenue from online business VoIP phone system High dependence on IT High cost of downtime Highly recognized brand 4 Multi-million dollar business Maj. of rev from electronic transactions Business model entirely dependent on IT source: apc.com Extremely high cost of downtime Two utility paths (active and passive) Redundant power and cooling systems Redundant service providers Able to sustain 72-hour power outage Careful site selection planning One-hour fire rating Allows for concurrent maintenance Two independent utility paths 2N power and cooling systems Able to sustain 96 hour power outage Stringent site selection criteria Minimum two-hour fire rating; High phy. security 24/7 onsite maintenance staff Balance cost of downtime and TCO
32 Next / Action Steps Perform a risk assessment to determine hourly cost of downtime Determine current data center tier for each subsystem in the data center you might not need tier-iv across the board Get IT and Facilities to work together on issues Work with finance to justify upgrades Understand TIA-942 (requirement & process) 2ff7e9595c
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