Adding SC200/220 Enclosures
Dell Compellent
191
Adding a Second SAS Enclosure, Second Chain
In
a
dual
‐
controller,
single
SAS
enclosure
configuration,
controller
redundancy
is
created
using
cross
‐
over
cables
(IPC)
from
controller
ports
2
to
controller
ports
4.
A
second
chain
performs
the
same
redundancy
as
the
IPC
cross
‐
over
cables.
Add an Enclosure
Add
a
new
enclosure
while
maintaining
redundancy.
1
Power
on
the
enclosures
being
added.
When
the
enclosures
spin
up,
make
sure
that
the
front
panel
enclosure
and
power
status
LEDs
show
normal
operation.
2
Remove
the
two
IPC
cables
from
the
Controllers,
ports
2
and
4.
3
Connect:
Controller
A,
port
2
→
new Enclosure 3:
top,
port
A.
4
Connect
Enclosure
3:
top,
port
B
→
Controller
B,
port
4.
5
In
the
Storage
Center
System
Manager,
select
Storage
Management
→
System
→
Setup
→
Configure
Local
Ports
.
6
Make
sure
that:
Slot
and
slot
ports
are
Up
and
the
Purpose
is
set
to
back
‐
end
.
Target
Count
equals
the
number
of
added
drives,
demonstrating
that
the
controller
recognizes
the
new
enclosures.
Figure 122. Adding an SC200/220 SAS Enclosure, Step 1
Enclosure 1
Enclosure 2
Controller A
Controller B
Enclosure 3
