When
nodes
are
added
to
the
cluster,
you
must
specify
the
I/O
group
they
will
join.
The
configuration
interfaces
will
also
check
the
uninterruptible
power
supply
units
and
ensure
that
the
two
nodes
in
the
I/O
group
are
not
connected
to
the
same
uninterruptible
power
supply
units.
The
following
figure
shows
a
cluster
of
four
nodes,
with
two
I/O
groups
and
two
uninterruptible
power
supply
units.
Related
topics:
v
Controls
and
indicators
for
the
uninterruptible
power
supply
All
the
controls
for
the
uninterruptible
power
supply
are
contained
on
the
front
panel
assembly.
See
1
Mode
indicator
2
On
button
3
Off
button
4
Test
and
alarm
reset
button
5
Load-level
indicators
Node 3
Node 4
Vdisks
Node 2
Node 1
Vdisks
I/O group 1
I/O group 2
UPS 2
UPS 1
Figure
16.
I/O
groups
and
uninterruptible
power
supply
relationship
+ -
+ -
+ -
+ -
25%
100%
1
2
3
4
5
6
7
8
9
Figure
17.
Uninterruptible
power
supply
front
panel
assembly
Chapter
2.
Uninterruptible
power
supply
overview
9
Summary of Contents for TotalStorage
Page 1: ...IBM TotalStorage SAN Volume Controller Installation Guide V ersion 1 2 0 SC26 7541 02...
Page 2: ......
Page 3: ...IBM TotalStorage SAN Volume Controller Installation Guide V ersion 1 2 0 SC26 7541 02...
Page 22: ...xx Installation Guide...
Page 36: ...14 Installation Guide...
Page 58: ...36 Installation Guide...
Page 74: ...52 Installation Guide...
Page 80: ...58 Installation Guide...
Page 84: ...62 Installation Guide...
Page 89: ......
Page 90: ...Part Number 64P8120 Printed in USA SC26 7541 02 1P P N 64P8120...
Page 91: ...Spine information IBM TotalStorage SAN Volume Controller Installation Guide Version 1 2 0...