Adaptec ASR-6405T Instrukcja Użytkownika Pobierz pdf (Strona 12)

BEHAVIORAL PATTERN – DATA CENTER

SHIFT IN PERFORMANCE METRICS

SHIFT

PERFORMANCE

METRICS

Emphasis on Latency

Impact of Latency on DCs

Amazon: every 100ms in latency

cost 1% in sales

z Varies by Application

z Lowest latency

z Consistent latency with no outliers

Amazon:

every

100ms

latency

cost

sales

z Google: an extra 500ms in page generation (latency) dropped

traffic by 20%

z Shopzilla: 5 second speedup resulted in 25% pageview

increase 10% increase in revenue 50% decrease in

z Drives Customer Perception and therefore cloud

adoption

z Critical factor of differentiation amongst service

providers

increase

10%

increase

revenue

50%

decrease

hardware, and a 120% increase in traffic from Google

z Goldman Sachs: making record profits off of a 500ms speed

advantage

Akamai

:30%

50% of transactions that take over 4 seconds,

z Can be monetized

Akamai

30%

50%

transactions

that

take

over

seconds,

bail out

Business Model Gap

Source:‘Latency:TheAchillesHeel ofCloudComputing’;Internap whitepaper

Link:http://www.activo.com/why‐low‐latency‐does‐matter‐and‐increases‐online‐sales

z Latency not represented in many SLAs:

z “…cloud providers today are unable to offer

premium Service Level Agreements (SLAs) for

mission-critical applications and infrastructure.”

z Superior latency opportunity for DCs to separate

from competition

Proprietary and ConfidentialProprietary and Confidential

Opportunity to optimize I/O path for reduced latency

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