Table
15.
Existing
EXP100
ESM
and
new
EXP100
ESM
firmware
compatibility
levels
(continued)
Existing
EXP100
ESM
firmware
version
New
EXP100
ESM
firmware
version
Corrective
action
956x
or
later
(R3
ESM)
9554
(R2
ESM)
You
can
only
upgrade
the
ESM
firmware
version
of
both
ESMs
to
956x
or
later.
Downgrading
the
EXP100
ESM
with
a
higher
ESM
firmware
version
to
a
lower
firmware
version
of
9554
is
not
supported.
You
can
upgrade
the
ESM
firmware
with
I/Os
although
it
is
recommended
that
you
update
the
ESM
firmware
during
a
period
of
low
DS4000
I/O
activity.
Replacing
a
failed
hot-swap
cooling
fan
Attention:
Do
not
run
the
expansion
enclosure
without
adequate
ventilation
and
cooling.
Improper
ventilation
might
cause
damage
to
the
internal
components
and
circuitry.
The
fans
are
interchangeable
and
replaceable,
and
do
not
require
preventive
maintenance.
The
fans
help
maintain
proper
air
circulation
across
the
components
inside
the
expansion
enclosure.
Air
flows
through
the
expansion
enclosure
from
the
front
to
the
back.
You
can
hot-swap
the
fans,
provided
that
you
complete
the
exchange
within
10
minutes.
This
time
limit
applies
only
to
the
total
time
that
a
fan
is
out
of
the
expansion
enclosure,
beginning
when
you
remove
the
failed
unit
and
ending
when
you
reseat
the
new
one.
This
does
not
include
the
time
it
takes
you
to
perform
this
entire
procedure
(checking
LEDs,
unpacking
the
new
fan,
and
so
on).
For
any
period
of
time
exceeding
10
minutes,
both
fan
units
must
always
be
in
place,
even
if
one
is
not
functioning
properly.
This
is
necessary
to
maintain
proper
cooling.
Complete
the
following
steps
to
replace
a
hot-swap
fan:
1.
Check
the
LEDs
on
the
back
of
the
expansion
enclosure.
2.
If
the
fan
amber
Fault
LED
is
lit,
remove
the
failed
fan:
a.
Slide
the
latch
in
the
same
direction
as
the
arrow
to
unlock
the
fan.
b.
Use
the
handle
(black
knob)
to
pull
the
fan
from
the
fan
bay,
as
shown
in
Chapter
3.
Installing
and
replacing
devices
97
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Summary of Contents for TotalStorage EXP100
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