17.
If
the
newly
inserted
controller
is
in
an
offline
state,
see
the
DS4000
Storage
Manager
client
online
help
for
instructions
on
bringing
the
controller
online.
If
necessary,
open
the
DS4000
Storage
Manager
Subsystem
Management
window
and
place
the
controller
online;
select
the
offline
controller
and
click
Advanced
>
Recovery
>
Place
controller
online
.
18.
Verify
the
state
of
the
LEDs
on
the
newly
inserted
controller.
See
the
information
about
checking
the
LEDs
in
the
IBM
System
Storage
DS4200
Express
Storage
Subsystem
Installation,
User's
and
Maintenance
Guide
(GC27-2048).
You
can
also
use
the
DS4000
Storage
Manager
Storage
Manager
client
Subsystem
Management
window
to
identify
any
new
faults.
Do
any
storage
subsystems
have
a
fault
(Needs
Attention)
status?
v
Yes
–
Select
the
Recovery
Guru
toolbar
button
in
the
Subsystem
Management
window,
and
complete
the
recovery
procedure.
If
the
problem
persists,
contact
your
IBM
service
representative.
v
No
–
Go
to
step
19.
If
you
also
replace
the
controller
cache
battery
backup
unit,
reset
the
battery
age
in
the
DR550
Storage
Controller
Subsystem
Management
window.
Refer
to
the
online
help
for
instructions
on
how
to
reset
the
battery
age,
if
required.
20.
Use
the
DS4000
Storage
Manager
client
software
to
a
new
storage
subsystem
profile.
Replacing
a
DR550
Storage
Controller
battery
unit
Each
RAID
controller
in
the
DR550
Storage
Controller
contains
a
rechargeable
battery
unit
that
maintains
data
in
the
cache
memory
for
three
days
without
power
to
the
unit.
Use
the
following
procedure
if
the
DS4000
Storage
Manager
for
DR550
client
instructs
you
to
replace
the
battery
unit
because
the
current
battery
has
failed.
You
can
also
use
the
DR550
Storage
Controller
client
to
check
the
status
of
the
battery.
Because
write-caching
is
disabled
when
either
one
of
the
battery
units
fail,
replace
the
failed
battery
unit
as
soon
as
possible
to
minimize
any
impact
due
to
the
disabling
of
the
write-caching
function.
Replace
only
the
battery
unit
that
is
indicated
as
failed
by
the
LEDs.
You
do
not
need
to
replace
both
battery
units
when
the
Battery
LEDs
indicate
that
only
one
battery
unit
has
failed.
Note:
Unlike
the
batteries
for
other
DS4000
Storage
Subsystems,
the
DR550
Storage
Controller
battery
units
do
not
have
set
expiration
dates.
Do
not
replace
these
batteries
after
a
certain
usage
period.
Attention:
When
you
handle
static-sensitive
devices,
take
precautions
to
avoid
damage
from
static
electricity.
For
details
about
handling
static-sensitive
devices,
see
the
IBM
System
Storage
DS4200
Storage
Subsystem
Installation,
User’s
and
Maintenance
Guide
.
Use
the
following
procedure
to
replace
a
battery
unit:
1.
Use
the
DS4000
Storage
Manager
for
DR550
client
software
to
a
storage
subsystem
profile.
2.
Locate
the
RAID
controller
that
contains
the
failed
battery
unit.
3.
Check
the
LEDs
on
the
battery
units
to
determine
which
of
the
two
battery
units
has
failed.
Replace
only
the
battery
unit
that
is
indicated
as
failed
by
the
LEDs.
114
DR550
Version
4.5
Problem
Determination
and
Service
Guide
Summary of Contents for DR550
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Page 185: ...DR1 power cabling Figure 88 DR1 Power Cabling Appendix A DR1 and DR2 cabling diagrams 157...
Page 186: ...Figure 89 DR1 Power Cabling 158 DR550 Version 4 5 Problem Determination and Service Guide...
Page 191: ...Figure 96 Expansion Drawer port identification Appendix A DR1 and DR2 cabling diagrams 163...
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Page 258: ...Printed in USA GA32 0576 00...
