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Chapter
4.
Replacing
EXN1000
expansion
unit
devices
This
chapter
describes
how
to
replace
EXN1000
expansion
units
in
a
rack,
disks
in
an
EXN1000
expansion
unit,
and
other
devices,
in
the
following
sections:
v
v
v
v
Attention:
Return
failed
parts
to
IBM.
Contact
IBM
Service
and
Support
at
1-800-IBM-SERV
(1-800-426-7378)
for
more
information
on
the
return
procedure.
Removing
an
EXN1000
expansion
unit
This
section
discusses
how
to
disconnect
an
EXN1000
expansion
unit
from
an
N
series
storage
system
and
how
to
remove
an
EXN1000
expansion
unit
from
a
daisy-chain
configuration.
It
does
not
discuss
how
to
install
an
EXN1000
expansion
unit
or
how
to
hot-add
an
EXN1000
expansion
unit.
For
information
about
installing
an
EXN1000
expansion
unit
in
a
rack,
see
For
information
about
hot-adding
a
disk-shelf,
see
CAUTION:
Hot
removal
or
hot-swapping
of
an
EXN1000
expansion
unit
is
not
supported.
For
detailed
information
about
removing
an
EXN1000
expansion
unit
from
a
rack,
see
the
following
topics:
v
v
©
Copyright
IBM
Corp.
2005,
2007
29
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