Note:
Avoid
operating
the
DS4300
storage
subsystem
with
controllers
of
different
cache
sizes.
Operating
the
storage
subsystem
with
controllers
of
different
cache
size
will
disable
caching
and
might
adversely
affect
performance.
To
replace
a
RAID
controller,
perform
the
following
steps:
1.
Check
the
Storage
Manager
client
online
Help
for
instructions
on
RAID
controller
failure-recovery
procedures.
Follow
the
steps
provided
in
the
software
documentation
before
continuing
with
step
2.
2.
Label
each
cable
that
connects
to
the
RAID
controller
that
has
failed.
This
ensures
that
all
cables
will
be
properly
reconnected
to
the
new
RAID
controller.
Attention:
Handle
and
install
fiber-optic
cables
properly
to
avoid
degraded
performance
or
loss
of
communications
with
devices.
When
working
with
fiber-optic
cables,
do
not
pinch
them,
step
on
them,
or
locate
them
in
aisles
or
walkways.
Do
not
overtighten
the
cable
straps
or
bend
the
cables
to
a
radius
smaller
than
38
mm
(1.5
in.).
3.
From
the
RAID
controller
that
has
failed,
remove
the
fibre-channel
cables
from
the
SFPs.
The
location
of
these
components
is
shown
in
Figure
98.
After
removing
the
fibre-channel
cables,
insert
the
protective
caps.
4.
Use
the
following
procedure
to
remove
the
SFPs
from
the
RAID
controller
that
has
failed.
a.
Remove
the
LC-LC
fibre-channel
cable
from
the
SFP
module.
For
more
information,
see
“Handling
fiber-optic
cables”
on
page
33.
b.
Unlock
the
SFP
module
latch:
v
For
SFP
modules
that
contain
plastic
tabs,
unlock
the
SFP
module
latch
by
pulling
the
plastic
tab
outward
10°,
as
shown
in
Figure
99
on
page
137.
SFP module
Raid controller
Fiber-optic
cable
Figure
98.
Location
of
SFPs
and
fiber-optic
cables
136
IBM
TotalStorage
DS4300
Fibre
Channel
Storage
Subsystem:
Installation,
User’s,
and
Maintenance
Guide
Содержание TotalStorage DS4300 Turbo
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