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Site outages
due to
natural
disasters,
attacks, or
application
infrastructure
failures are
a major
cause of
loss of
revenue,
loss of
customer
satisfaction,
and loss of
user
productivity.
Congratulations
to you if
you had the
foresight
and the
budget to
build
another data
center in a
different
geographic
site.
Unfortunately,
most
organizations
set up their
secondary
site in an
active-standby
configuration
with a
manual
recovery
process that
can be
costly,
error prone,
and slow.
They
experience
broken
transactions,
customer
dissatisfaction,
and downtime
costs that
severely
disrupt
their
business and
decrease
profitability.
This paper
describes
how
businesses
can use F5
Networks'
BIG-IP
Global
Traffic
Manager to
leverage all
the benefits
of their
secondary
site in an
active-active
configuration
to
holistically
manage their
applications
across
multiple
sites and
provide:
-
Application
high
availability
by tracking
and managing
multiple
data
centers,
applications,
and any web
services
that work
together
within a
composite
application.
This
involves
tracking
dependencies
to
transparently
redirect
users to an
available
site,
eliminating
the cost of
downtime.
-
Application
state and
persistence
tracking to
ensure that
users
persist to
the
application
in the same
site to
eliminate
broken
sessions and
corrupted
data.
-
Application
maintenance
to ensure
that
applications
can be
brought up
or down
across
multiple
sites,
eliminating
downtime and
any errors
or guesswork
without
management
overhead.
This paper
also
describes
how you can
use F5
Networks'
BIG-IP Link
Controller
to maintain
ISP link
connectivity
and WANJet
to
accelerate
site-to-site
data
replication
across the
WAN.
Challenges
Keeping your
applications
available
across
multiple
data centers
pose a
variety of
challenges:
- Lack of
visibility
into data
center and
application
health - How
do you gauge
the health
of the data
center and
application?
-
Sub-optimal
user
experience -
When
organizations
deliver
applications,
how do they
handle
broken
sessions,
retrieve
lost data,
and secure
personal
information?
-
Maintenance
overhead -
Too often,
organizations
have no
choice but
to shut down
the entire
data center
to do their
upgrades, or
what about
the time it
takes to do
site-to-site
data
replication
across the
WAN. If
you're an
e-commerce
site, can
you image
the lost
revenue?
- Impact of
DNS mistakes
- Domain
Name Server
(DNS)
management
continues to
be the least
understood
and the most
pervasive
networking
technology
used by
businesses.
What happens
when DNS
management
errors break
your entire
application
infrastructure?
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