TIER STANDARDS IN DATA CENTER, ARE YOU SURE ABOUT THEIR DIFFERENCES? BY: VAISHNAVI KULKARNI ESDS SOFTWARE SOLUTIONS PVT. LTD.
Apr 16, 2017
TIER STANDARDS IN DATA CENTER, ARE YOU SURE ABOUT THEIR DIFFERENCES?
B Y: V A I S H N A V I K U L K A R N IE S D S S O F T W A R E S O L U T I O N S P V T. LT D .
INTRODUCTION• We are already steering towards change with digital
evolution all over and with this we can be manipulated easily with number of services all over claiming to be best.
• Tier level certifications for Datacenters are one such thing. Basically Tier defines the levels of availability of data from the DC to the requested location.
• Availability is defined by the level of tiers, higher is better.
• Tier standards falls under TIA and Uptime institute LLC.
• The goal of Tier standards is nothing but the standardized approaches for defining uptime and data security of the data centersBut What is difference between
theseTier levels?
INTRODUCTION
Here are the features and availability of data center Tier level descriptions of tier certifications.
Tier IV
Tier III
Tier II
Tier I
TIER I• Basic category of
certification• 99.671 % uptime per year• 28.8 hours of average
disruption in the year• No redundant capacity
components• Suitable for Small
Businesses• Not for critical application
Tier IV
Tier III
Tier II
Tier I
TIER II• Second category of Tier
standards, it includes all features of Tier I
• 99.741 % uptime per year• 22 hours of average
disruption in the year• Redundant capacity
components• Suitable for Medium sized
Businesses
Tier IV
Tier III
Tier I
Tier II
TIER III• Third category of Tier
standards, it includes all features of Tier I + Tier II
• 99.982 % uptime per year• 1.6 hours of average
disruption in the year• Dual powered system• Suitable for Large sized
Businesses
Tier IV
Tier ITier II
Tier III
TIER IV• Topmost category of Tier
standards, it includes all features of Tier I + Tier II + Tier III
• 99.995 % uptime per year• 0.8 hours of average
disruption in the year• Fully Fault tolerant
system• Suitable for Enterprises Tier I
Tier II
Tier III
Tier IV
MYTHS ABOUT TIER III• DC providing 99.982% does not necessarily
means Tier III certified Data center• Tier III has no single points-of-failure• Fault tolerance of Tier III is higher than Tier II• A Tier rating is aggregate (Tier III.5, Tier III+)• Tier mandate location, security and
operations
WHEN CAN BE RIGHT TIME TO CHOOSE TIER III?• When the data to be stored is sensitive and
requires secure hosting.• Need of mission critical businesses or high
priority operations that are proportionally related with financial aspects and may lead to losses if there are disruptions in power.
TIER III OR TIER IV ?• This is one of the common confusion, this
makes providers a reason to present their services as best.
• Tier III and IV are not just data center centric but they are complete infrastructure centric.
• Logically speaking tier IV is the best of all but it’s not at all logical always to invest heavy costs in it when we have a reasonable option available.
• Tier III provides with maximum required features in lower costs
OVERVIEW OF TIER STANDARDS
CONCLUSION• Maximum the tier level minimum the downtime is the basic theory
behind. Complexities, performance, CAPEX and OPEX increase with each tier level.
• Depending on the business size, budgets and requirement, it is logical to choose suitable certified Data Center.
• In case of any further doubts feel free to contact [email protected]
SOURCE
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