...
This
...
page
...
describes
...
how
...
we
...
will
...
support
...
the
...
MAD
...
in
...
a
...
production
...
environment.
...
Enumerate
...
the
...
types
...
of
...
failures
...
that
...
are
...
obviated
...
by
...
the
...
redundancies
...
built
...
into
...
Applogic
...
grids.
...
Are
...
these
...
intrinsic
...
redundancy
...
features
...
this
...
the
...
same
...
as
...
those
...
offered
...
by
...
our
...
ESX
...
products?
...
Define
...
the
...
SLA
...
for
...
DBI.
...
Enumerate
...
additional
...
failure
...
scenarios
...
and
...
describe
...
the
...
plans
...
to
...
mitigate
...
these
...
failures?
...
-
...
database
...
corruption
...
-
...
physical
...
destruction
...
of
...
data
...
center
...
Enumerate
...
the
...
security
...
risks
...
and
...
describe
...
the
...
plans
...
to
...
mitigate
...
these
...
risks?
...
-
...
DOS
...
attacks
...
-
...
SQL
...
injection
...
attackes
...
-
...
account
...
and
...
password
...
security
...
-
Don't
...
forget
...
network
...
(dis)connectivity.
...
I
...
heard
...
that
...
the
...
City
...
Hall
...
outage
...
the
...
other
...
day
...
was
...
due
...
to
...
a
...
PG&E
...
vault
...
fire,
...
and
...
that
...
ain't
...
the
...
first
...
time.
...
Anyway,
...
network
...
connections
...
do
...
drop,
...
so
...
they
...
need
...
to
...
be
...
identified
...
(e.g.,
...
DBI
...
to
...
cloud?),
...
and
...
what
...
if
...
that
...
happens
...
right
...
in
...
the
...
middle
...
of
...
a
...
<worst-case-scenario>?
...
I
...
went
...
to
...
a
...
business-continuity
...
seminar
...
a
...
couple
...
of
...
weeks
...
back,
...
you
...
may
...
want
...
to
...
take
...
a
...
look
...
at
...
the
...
slides:
...
...
So what? Don't
...
forget
...
about
...
EAS
...
upgrades,
...
PostgreSQL/PostGIS
...
upgrades,
...
Django
...
upgrades,
...
etc.,
...
major
...
versions
...
and
...
patches.
...
Virus
...
scans?
...
Probably
...
more
...
things
...
that
...
elude
...
me
...
at
...
the
...
moment.
...
what
...
is
...
our
...
Recovery
...
Time
...
Objective?
...
(how
...
soon
...
to
...
be
...
back
...
up
...
and
...
running)
...
http://en.wikipedia.org/wiki/Recovery_Time_Objective
...
access
...
to
...
the
...
database
...
is
...
more
...
important
...
than
...
access
...
to
...
the
...
cached
...
map
...
data
...
upon
...
a
...
DC
...
failover,
...
we
...
will
...
have
...
to
...
reseed
...
chache
...
Can
...
we
...
assume
...
that
...
we
...
are
...
not
...
going
...
to
...
use
...
replication?
...
If
...
no
...
replication,
...
how
...
much
...
work
...
can
...
we
...
loose?
...
(1
...
day,
...
4
...
hours?,
...
2
...
hours?)
...
Recovery
...
Point
...
Objective
...
(acceptable
...
amount
...
of
...
data
...
loss
...
measured
...
in
...
time)
...
http://en.wikipedia.org/wiki/Recovery_point_objective
...
monitor
...
disk
...
space