IBM 17011RS Maintenance Manual - Page 55

Attention, storage, subsystems, controller, installed, controllers, Fibre, Channel

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Attention: For storage subsystems with only one controller installed: To prevent data loss, you must shut down the system before you replace the battery. For the correct shutdown sequence, refer to the Hardware Installation and User's Guide. 1. Read the safety information beginning on page iii and "Installation guidelines" on page 35. 2. Label each cable that is connected to the RAID controller so that you can correctly reconnect it to the RAID controller after you replace the battery. 3. For storage subsystems with only one controller installed: Stop the host I/O data to the storage subsystem; then, turn off the power-supply switches on the rear of the storage subsystem. 4. For storage subsystems with two controllers installed: Move the I/O data to the alternate controller: a. Open a Telnet session and connect to the alternate controller management port IP address. b. At the command prompt, enter admin. c. Enter the administrator password. d. Enter controller peer disable. The controller that you are removing will shut down and all I/O data will have moved to the alternate controller. 5. Remove the Ethernet cables from the RAID controller. 6. For a Fibre Channel RAID controller only: Remove the fiber-optic cables and the SFP modules from the RAID controller. For more information, refer to the ″Hardware Installation and User's Guide″. Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity. For details about handling static-sensitive devices, see "Handling static-sensitive devices" on page 35 7. Remove the RAID controller that contains the battery that you want to replace: a. While squeezing together the latch and lever that are on each side of the controller, press down on the orange area on each latch. The controller will slide out of the bay a short distance. RAID controller RAID controller filler panel Figure 22. Removing a RAID controller b. Grasp both latches and pull the controller out of the bay. c. Place the controller on a dry, level surface. 8. Remove the battery: Appendix A. Installing and replacing components 41

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Attention:
For
storage
subsystems
with
only
one
controller
installed:
To
prevent
data
loss,
you
must
shut
down
the
system
before
you
replace
the
battery.
For
the
correct
shutdown
sequence,
refer
to
the
Hardware
Installation
and
User’s
Guide
.
1.
Read
the
safety
information
beginning
on
page
iii
and
“Installation
guidelines”
on
page
35.
2.
Label
each
cable
that
is
connected
to
the
RAID
controller
so
that
you
can
correctly
reconnect
it
to
the
RAID
controller
after
you
replace
the
battery.
3.
For
storage
subsystems
with
only
one
controller
installed:
Stop
the
host
I/O
data
to
the
storage
subsystem;
then,
turn
off
the
power-supply
switches
on
the
rear
of
the
storage
subsystem.
4.
For
storage
subsystems
with
two
controllers
installed:
Move
the
I/O
data
to
the
alternate
controller:
a.
Open
a
Telnet
session
and
connect
to
the
alternate
controller
management
port
IP
address.
b.
At
the
command
prompt,
enter
admin
.
c.
Enter
the
administrator
password.
d.
Enter
controller
peer
disable
.
The
controller
that
you
are
removing
will
shut
down
and
all
I/O
data
will
have
moved
to
the
alternate
controller.
5.
Remove
the
Ethernet
cables
from
the
RAID
controller.
6.
For
a
Fibre
Channel
RAID
controller
only:
Remove
the
fiber-optic
cables
and
the
SFP
modules
from
the
RAID
controller.
For
more
information,
refer
to
the
″
Hardware
Installation
and
User’s
Guide
″
.
Attention:
When
you
handle
static-sensitive
devices,
take
precautions
to
avoid
damage
from
static
electricity.
For
details
about
handling
static-sensitive
devices,
see
“Handling
static-sensitive
devices”
on
page
35
7.
Remove
the
RAID
controller
that
contains
the
battery
that
you
want
to
replace:
a.
While
squeezing
together
the
latch
and
lever
that
are
on
each
side
of
the
controller,
press
down
on
the
orange
area
on
each
latch.
The
controller
will
slide
out
of
the
bay
a
short
distance.
b.
Grasp
both
latches
and
pull
the
controller
out
of
the
bay.
c.
Place
the
controller
on
a
dry,
level
surface.
8.
Remove
the
battery:
RAID controller
filler panel
RAID controller
Figure
22.
Removing
a
RAID
controller
Appendix
A.
Installing
and
replacing
components
41