Event
Battery fails or
needs replacement
Electronics fail
Load capacity reached
Overload
Humidity too high
Temperature too high
Server locked up
Legacy UPS
System is unprotected - system
will crash at next power outage
and must be brought down to
service UPS.
Availability compromised.
Computer system crashes or will
crash at next power outage.
System is unprotected and must
be brought down for service.
Availability compromised.
User needs to buy new UPS.
UPS goes to bypass - system will
crash at next power outage.
Availability compromised.
No alert. Computer equipment can
be damaged.
Availability compromised.
No alert. Computer equipment can
be damaged.
Availability compromised.
Nothing. User must manually
reboot system.
Availability compromised.
Power Array
System remains up and protected.
User notified proactively, service
within minutes while load is up
and protected.
Load remains up and protected.
Only redundancy lost. User noti-
fied proactively; service within
minutes while load is running and
protected.
User adds an extra Power Module
for 15-25% of the cost of new UPS.
Load remains up and protected,
only redundancy lost.
Alert sent via network, SNMP, or
web-based command.
Alert sent via network, SNMP, or
web-based command.
With MasterSwitch
™
accessory,
user can remotely reboot individ-
ual loads.
Power Array
™
vs. Legacy UPS
A typical legacy UPS is rated at
approximately 95%** system availability,
leaving a 5% power availability gap. A
recent Oracle Corporation study of 400
large companies pegged the cost of
downtime at an average of $100,000 per
hour (based on company-wide down-
time). When considering systems avail-
ability, Oracle shows that for a large
company a gain of just one percentage
point of availability is worth $7,358,400
per year. Multiply that by the five per-
centage points of availability unac-
counted for by a legacy UPS
($36,792,000), and the costs quickly add
up. Even at an average size company,
one hour of downtime translates to
$10,000 off the bottom line. With a 5%
power availability gap, such companies
risk $3,679,000 per year. (Source:
Electric Power Systems Quality, 1996).
The truth is, whether your company is
Average Cost per Downtime Event
Company size (Annual Revenue):
% Revenue directly linked to systems/network:
Actual system-related revenue risk:
Revenue loss per hour downtime: [3 / 2000 hrs.]:
Personnel cost per hour: [# of users x hourly wage]:
Rev. & Pers. cost per event [4 + 5 x MTTR (24 hours)]:
Lost data cost per event: [4 x 8 hrs x 12%]:
Total cost per event [6 + 7]:
A. No UPS protection B. Legacy UPS C. Power Array
Risk of downtime = Static downtime risk = Flexible downtime risk =
15* x
8 15 x 8 x .05** 15 x 8 x n (n = % gap
†
)
$
$
ROI Worksheet
$
[$400 mil.]
1
[80%]
2
[$320 mil.]
3
[$160,000 ]
4
[$30,000 ]
5
[$4.56 mil.]
6
[$153,600 ]
7
[$4.71 mil.]
8
[$70.7 mil.]
[$3.54 mil.]
[$7,065]
[Sample Data]
*LAN Computing, 11/2/92 **Published Competitor Legacy UPS Availability = 95%
†
Varies based on Power Array configuration
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