Appendix A Adding or Removing an Enclosure
184
Storage Center SC8000 Controller Deployment Guide
Adding SC200/220 Enclosures
Use
caution
when
adding
an
enclosure
to
a
live
Storage
Center
system
to
preserve
the
integrity
of
the
existing
data.
This
section
describes
two
methods
of
adding
enclosures:
Create
a
new
chain
by
adding
enclosures
to
available
ports
on
the
controller’s
IO
cards.
The
current
configuration
is
undisturbed.
Creating
a
new
chain
is
the
safest
way
to
increase
storage
capacity.
When
you
have
multiple
chains,
you
should
have
at
least
two
IO
cards
in
each
controller.
Add
an
enclosure
to
an
existing
chain
by
failing
over
to
one
side
of
the
chain
and
then
connecting
into
the
other
side
of
the
chain.
Creating a New Chain of SC200/220 Enclosures
This
method
is
safe
and
non
‐
intrusive
to
the
existing
disks
and
chains.
shows
an
example
of
adding
a
new
chain
using
the
following
steps.
1
If
there
is
more
than
one
enclosure
in
the
new
chain,
cable
the
enclosures
together
first.
Do
not
connect
the
chain
to
the
controller
yet.
Connect
the
enclosures:
a
New
Enclosure
(3):
top,
port
B
→
Next
Enclosure
(4):
top,
port A.
b
New
Enclosure
(3):
bottom
port
B
→
Next
Enclosure
(4):
bottom,
port
A.
2
Turn
on
each
of
the
enclosures
being
added.
When
the
enclosures
spin
up,
make
sure
that
the
front
panel
enclosure
and
power
status
LEDs
show
normal
operation.
3
Connect
the
Controller:
slot
6,
port
2
→
Enclosure
3:
top,
port
A.
4
In
the
Storage
Center
System
Manager,
select
Storage
Management
→
System
→
Setup
→
Configure
Local
Ports
.
5
Make
sure
that:
Slot
and
slot
port
(in
this
case,
slot
6,
port
2)
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.
6
In
the
Storage
Manager
System
Tree,
confirm
the
number
of
enclosures.
7
Connect
last
Enclosure
(4):
bottom,
port
B
→
Controller:
slot
6,
port
4.
8
Verify
that
the
last
enclosure
has
been
added
as
described
in
steps
through
.
9
If
there
are
no
managed
disks
in
this
system,
the
System
Manager
does
not
assign
an
Index
number.
If
the
system
contains
a
managed
disk
in
any
enclosure,
the
System
Manager
assigns
an
index
number
to
the
new
enclosures.
10
The
Storage
Center
System
Manager
informs
you
that
you
have
new,
unassigned
disks.
from
the
Storage
Management
menu,
select
Disk
→
Manage
Unassigned
Disks
to
move
them
to
the
managed
disk
folder
and
add
the
space
to
the
disk
pool.
For
more
information,
see
the
Storage
Center
System
Manager
Administrator’s
Guide
.
11
To
redistribute
data
across
all
drives,
from
the
Storage
Management
menu,
select
Disk
→
Rebalance RAID
.
