1) Calculating the value of lost data
How often is the system backed
up? _______
How many users depend on the system
Either Directly (word-processors, for
instance)
or indirectly (CEO who needs daily
reports)? _______
A
What percent of data is not recoverable
After a system
crash? _______
B
Company size (gross
revenue) _______
C
Number of
employees? _______
D
Employee
contribution _______
Company's gross revenue/number of
employees
E=C/D
Employee hourly
contribution _______
Employee contribution / total business
hours in year
F=E/2000
Cost of day’s worth of
data _______
(employee hourly contribution * # of
users on LAN)
G=(F*A)*8
Total cost of lost
data _______
(Cost of day’s worth of data) * % of data
not Recoverable)
H=G * B
2) Calculating personnel downtime
Type of
failure? _______
Mean time to repair
(hours)? _______
I
Average hourly wage of
users? _______
J
Salary
cost _______
Average wage of user’s * # of users *
mean time to Repair
K=J*A*I
Consultant or overtime
cost? _______
L
Total
Cost _______
Salary cost + overtime cost, if
applicable +
M=L+K
Consultant’s cost, if applicable
3)
Calculating company image loss
Number of alternate suppliers of
same _______
Service or Product?
Estimated failures per
year? _______
N
Estimated % of customers who will
Select Another supplier if unable to
get service/ Product because of
system
problems? _______
P
Total image
loss _______
Company’s gross sales * (% of
turn-always)
Q=C*P
Total
costs per failure
Total
= ________
(Cost of data loss) + (Cost of personnel
down–
R=H+M+Q
Time) + (Cost of image)
Estimated # of failures over five
years _______
S=N * 5
Total
losses over five years
Total
= _______
(Total cost per failure) * (Estimated #
of failures
T=R * S
Over five years)
