Chapter 3 Connect the Back End
68
Storage Center SC8000 Controller Deployment Guide
Dual Controllers, One Enclosure, Single Chain
This
illustration
shows
two
SC8000
controllers
cabled
to
one
SAS
enclosure
in
a
single
chain.
Figure 67. Dual SC8000 Controllers, One Enclosure, One Chain
Note:
In
a
single
‐
chain
configuration,
use
SAS
ports
2
(initiator)
and
4
(target)
to
create
a
redundant
IPC
connection.
When
you
configure
these
ports
using
the
IO
port
wizard,
set
the
port
Purpose
to
Unknown
.
Path
Connections
IPC
1 Controller
A:
slot
6,
port
2
→
Controller
B:
slot
6,
port
4.
2 Controller
B:
slot
6,
port
2
→
Controller
A:
slot
6,
port 4.
Chain
1:
A
Side
1 Controller
A:
slot
6,
port
1
→
Enclosure:
top
EMM,
port
A.
2 Enclosure:
top
EMM,
port
B
→
Controller B:
slot
6,
port
3.
Chain
1:
B
Side
1 Controller
B:
slot
6,
port
1
→
Enclosure:
bottom
EMM,
port
A.
2 Enclosure:
bottom
EMM,
port
B
→
Controller
A:
slot
6,
port
3.
Enclosure
Controller A
Controller B
4
3
2
1
A
A
B
B
4
3
2
1
