Attention:
Read
the
readme
file
that
is
included
in
each
firmware
or
DS4000
Storage
Manager
software
package
for
any
limitations,
subsystem
firmware
prerequisites,
or
download-sequence
information.
For
example,
the
controller
firmware
code
might
require
the
storage
expansion
enclosure
ESM
firmware
to
be
upgraded
first
to
a
particular
version,
or
the
controller
firmware
download
might
require
the
halting
of
I/Os
to
the
DS4800’s
logical
drives.
Failure
to
observe
the
limitations,
prerequisites,
and
dependencies
in
the
readme
file
might
result
in
a
loss
of
data
access.
Unless
the
readme
file
contains
special
requirements
for
the
sequence
in
which
you
upgrade
firmware,
you
should
perform
firmware
upgrades
in
the
following
sequence:
1.
ESM
firmware
for
the
storage
expansion
enclosures
2.
Controller
firmware
3.
Controller
NVSRAM
4.
Drive
firmware
Troubleshooting
the
storage
subsystem
The
DS4000
Storage
Manager
client
software
enables
you
to
monitor
the
storage
subsystem,
diagnose
problems,
and
recover
from
failures.
For
best
configuration
operation,
run
the
DS4000
Storage
Manager
client
software
continuously,
and
frequently
check
the
configuration
status.
Use
the
following
procedure
to
check
the
status
of
the
storage
subsystem.
If
a
problem
has
occurred,
use
the
DS4000
Storage
Manager
client
software
and
the
LEDs
on
the
storage
subsystem
to
help
locate
a
failed
component.
1.
If
applicable,
turn
off
the
alarm.
2.
If
another
fault
occurs,
the
alarm
sounds
again.
Use
the
DS4000
Storage
Manager
client
software
to
a
storage
subsystem
profile.
3.
Using
the
Enterprise
Management
window,
view
the
status
storage
subsystem.
Do
any
components
in
the
storage
subsystem
indicate
Needs
Attention?
v
Yes
–
Go
to
step
v
No
–
All
components
are
Optimal.
Go
to
step
4.
Open
the
Subsystem
Management
window,
and
display
the
Physical
View
for
the
components
in
the
storage
subsystem.
5.
View
the
status
of
the
storage
subsystem
by
selecting
the
View
Storage
Subsystem
button
and
expanding
the
Overall
Component
Information
when
the
Status
window
opens.
Using
the
Overall
Component
Information
view,
you
can
see
the
status
of
the
following
components:
v
Interconnect-battery
unit
and
battery
packs
in
the
component
v
SFPs
v
Power
supply-fans
v
Temperature
sensors
The
status
for
each
component
is
either
Optimal,
Charging
(applicable
to
battery
packs
only),
or
Needs
Attention.
6.
Do
any
components
have
a
Needs
Attention
status?
v
Yes
–
Go
to
step
v
No
–
All
components
are
Optimal.
Go
to
step
Chapter
4.
Operating
the
storage
subsystem
117
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