Verify Connectivity and Failover
Dell Compellent
167
d
After
the
copy
finishes,
turn
on
the
controller.
e
Wait
3
minutes
and
verify
that
the
controller
has
finished
starting.
f
Rebalance
the
ports.
3
Manually
shut
down
the
second
controller
while
copying
data
to
TestVol2
to
verify
that
IO
is
not
interrupted
by
the
failover
event.
a
Copy
the
Test
folder
to
the
TestVol2
volume.
b
During
the
copy
process,
shut
down
the
second
controller
(the
controller
through
which
the
volume
is
mapped).
c
Verify
that
the
copy
process
continues
after
the
controller
is
shut
down.
d
After
the
copy
finishes,
turn
on
the
controller.
e
Wait
3
minutes
and
verify
that
the
controller
has
finished
starting.
f
Rebalance
the
ports.
Test MPIO
If
the
network
environment
and
servers
are
configured
for
MPIO,
perform
tests
to
make
sure
that
failed
paths
do
not
interrupt
IO.
1
Create
a
Test
folder
on
the
server
and
copy
at
least
2GB
of
data
into
it.
2
Make
sure
that
the
FC
or
iSCSI
server
is
configured
to
use
load
balancing
MPIO
(round
‐
robin).
3
Manually
disconnect
a
path
while
copying
data
to
TestVol1
to
verify
that
MPIO
is
functioning
correctly.
a
Copy
the
Test
folder
to
the
TestVol1
volume.
b
During
the
copy
process,
disconnect
one
of
the
paths
and
verify
that
the
copy
process
continues.
c
Reconnect
the
port.
4
Repeat
as
necessary
to
test
additional
paths.
5
(Dual
‐
controller
Storage
Center)
Restart
the
controller
that
contains
the
active
path
while
IO
is
being
transferred.
6
If
the
Storage
Center
is
not
in
a
production
environment,
restart
the
switch
that
contains
the
active
path
while
IO
is
being
transferred.
Clean up Test Volumes
After
testing
is
complete,
delete
the
volumes
used
for
testing.
