IBM 17011RS Maintenance Manual - Page 60

Replacing, memory, module

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19. Use the ServeRAID Manager program to monitor the status of the storage subsystem. Replacing a memory module Follow the procedure in this section to do the following tasks: v Replace the cache dual inline memory module (DIMM) if the amber LED is lit. v Install the 1 GB system DIMM upgrade option (purchased separately) v Replace a system DIMM that has failed. To replace a cache or system DIMM, complete the following steps: 1. Read the safety information beginning on page "Safety" 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 cache DIMM. 3. For a storage subsystem with only one controller installed: Stop the host I/O data to the storage subsystem. 4. For a storage subsystem with only one controller installed: Use the ServeRAID Manager program to shut down the RAID controller; then, turn off the power-supply switches on the rear of the storage subsystem. 5. 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. 6. Remove the Ethernet cables from the RAID controller. 7. 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 8. Remove the RAID controller that contains the DIMM 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. 46 IBM TotalStorage DS300 and DS400: Hardware Maintenance Manual

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19.
Use
the
ServeRAID
Manager
program
to
monitor
the
status
of
the
storage
subsystem.
Replacing
a
memory
module
Follow
the
procedure
in
this
section
to
do
the
following
tasks:
v
Replace
the
cache
dual
inline
memory
module
(DIMM)
if
the
amber
LED
is
lit.
v
Install
the
1
GB
system
DIMM
upgrade
option
(purchased
separately)
v
Replace
a
system
DIMM
that
has
failed.
To
replace
a
cache
or
system
DIMM,
complete
the
following
steps:
1.
Read
the
safety
information
beginning
on
page
“Safety”
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
cache
DIMM.
3.
For
a
storage
subsystem
with
only
one
controller
installed:
Stop
the
host
I/O
data
to
the
storage
subsystem.
4.
For
a
storage
subsystem
with
only
one
controller
installed:
Use
the
ServeRAID
Manager
program
to
shut
down
the
RAID
controller;
then,
turn
off
the
power-supply
switches
on
the
rear
of
the
storage
subsystem.
5.
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.
6.
Remove
the
Ethernet
cables
from
the
RAID
controller.
7.
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
8.
Remove
the
RAID
controller
that
contains
the
DIMM
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.
46
IBM
TotalStorage
DS300
and
DS400:
Hardware
Maintenance
Manual