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1.
Loosen
the
adjusting
screws
on
the
left
and
right
mount
shelf
brackets
to
allow
for
adjustment
to
the
cabinet
depth.
2.
Attach
the
left
and
right
mount
shelf
brackets
to
the
rails
in
the
cabinet.
Standard
EIA
rail
spacing
of
holes
is
sets
of
three,
separated
by
5/8
in.,
5/8
in.,
and
1/2
in.
See
Note:
If
you
are
installing
a
2109
Model
M12
into
the
bottom
of
the
rack,
go
to
step
for
the
location
of
the
rail.
If
you
are
installing
a
2109
Model
M12
into
the
top
of
the
rack,
go
to
step
for
the
location
of
the
rail.
a.
Locate
the
screws
in
the
middle
of
EIA
unit
5
and
the
bottom
of
EIA
unit
6
for
the
back
of
the
cabinet.
Locate
the
screws
in
the
middle
of
EIA
unit
4,
the
bottom
of
EIA
unit
5,
the
middle
of
EIA
unit
5,
and
the
bottom
of
EIA
unit
6
for
the
front
of
the
cabinet.
b.
Locate
the
screws
in
the
middle
of
EIA
unit
22
and
the
bottom
of
EIA
unit
23
for
the
back
of
the
cabinet.
Locate
the
screws
in
the
middle
of
EIA
unit
21,
the
bottom
of
EIA
unit
22,
the
middle
of
EIA
unit
23,
and
the
bottom
of
EIA
unit
23
for
the
front
of
the
cabinet.
c.
You
can
route
the
cables
down
through
the
cable
management
tray
or
through
the
holes
in
the
sides
of
the
chassis.
If
you
route
the
cables
down
through
the
cable
management
tray,
allow
adequate
space
below
the
chassis
for
cable
management.
Orient
the
left
and
right
mount
shelf
brackets
with
the
notched
portion
toward
the
service
aisle.
Attach
the
shelf
brackets
to
the
cabinet
rails,
by
using
six
1/4–20
x
1/2-in.
Phillips
panhead
screws
with
lock
washers
per
bracket.
Tighten
the
screws.
See
5/8 inch
5/8 inch
5/8 inch
5/8 inch
5/8 inch
5/8 inch
5/8 inch
5/8 inch
Distances
Between
Holes:
1/2 inch
1/2 inch
1/2 inch
1U
Top Screw in
Shelf Bracket
Clip
Bottom Screw in
Shelf Bracket
Bottom of
Shelf Bracket
(just below Hole 1)
Note:
Hole 1 must be the top
hole of the two holes that
are spaced 1/2 inch apart.
Hole 9
Hole 8
Hole 7
Hole 6
Hole 5
Hole 4
Hole 3
Hole 2
Hole 1
SJ000662
Figure
22.
Placement
of
the
shelf
brackets
and
clip
nuts
on
the
cabinet
rails
44
IBM
TotalStorage
SAN
Switch:
2109
Model
M12
Installation
and
Service
Guide
Summary of Contents for TotalStorage 2109 M12
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