Installing the ds4000 storage manager client, Installing, Ds4000 – IBM Partner Pavilion DS4100 User Manual
Page 94: Storage, Manager, Client, Redundant, Power, Connections, Controllers
one-half
of
the
current
load.
If
there
is
only
one
power
supply
unit,
it
will
handle
all
of
the
current
load.
To
ensure
maximum
protection
against
power
loss
due
to
power
supply
unit
failure
or
a
power
circuit
tripping,
both
power
supply
units
must
be
connected
and
powered
on.
See
for
the
DS4100
AC
power
requirements.
See
for
an
example
of
redundant
power
cabling.
Exception:
The
DS4100
single-controller
storage
server
has
only
one
power
supply,
so
it
does
not
support
power
redundancy.
For
details
about
power
requirements,
see
6.
Go
to
for
the
initial
startup
of
the
storage
server.
Attention:
Before
you
power
on
the
storage
server,
any
storage
expansion
units
should
be
completely
connected
to
the
storage
server.
Installing
the
DS4000
Storage
Manager
client
Refer
to
the
IBM
TotalStorage
DS4000
Storage
Manager
9.10
Installation
and
Support
Guide
for
the
appropriate
operating
system
for
instructions
on
how
to
install
the
Storage
Manager
software.
Use
that
document
and
the
online
help
to
configure
the
logical
drives,
partitions,
and
so
on
for
the
RAID
controllers.
Use
your
operating
AC distribution unit
power cord
Controller power supplies
Drive expansion unit
power supplies
Rack power cable connector
Rack power cable
AC distribution units
f10ug060
Figure
56.
Redundant
AC
power
connections
to
controllers
and
drive
expansion
units
62
IBM
TotalStorage
DS4100
Storage
Server:
Installation,
User’s,
and
Maintenance
Guide