The
SAS
expansion
card
is
attached
to
the
PCI-X
connector
of
the
blade
server.
Two
SAS
cables
connect
the
SAS
connectivity
modules
at
the
rear
of
the
BladeCenter
unit
to
the
BladeCenter
Boot
Disk
System.
Depending
on
the
availability
requirements
of
a
particular
installation,
a
SAS
fabric
might
use
different
redundancy
strategies.
For
example,
there
might
be
just
a
single
SAS
connectivity
module
or
there
might
be
duplicate
SAS
cables.
Production
environments,
typically,
have
multiple
storage
systems
and
BladeCenter
units.
For
setup
and
configuration
information
see
the
BladeCenter
Boot
Disk
System
information
on
the
BladeCenter
support
Web
site
at
For
a
general
introduction
with
setup
examples
see
IBM
System
Storage
DS3000:
Introduction
and
Implementation
Guide
,
SG24-7065,
at
http://www.redbooks.ibm.com/redbooks/pdfs/sg247065.pdf.
Complete
the
following
steps
to
configure
a
boot
device:
1.
Start
your
Storage
Manager.
For
details
on
steps
to
see
the
documentation
that
comes
with
the
Storage
Manager.
2.
Make
the
BladeCenter
Boot
Disk
System
accessible
to
the
Storage
Manager
by
performing
a
discovery.
3.
Assign
a
name
to
the
BladeCenter
Boot
Disk
System.
4.
Make
the
storage
system
accessible
to
the
blade
server
by
configuring
host
access
for
the
blade
server.
If
two
SAS
connectivity
modules
are
installed
on
the
BladeCenter
unit,
the
Storage
Manager
detects
two
ports
for
your
blade
server.
If
two
ports
are
detected,
be
sure
to
add
the
SAS
address
for
both
ports.
5.
Create
a
logical
drive
and
map
it
to
the
blade
server.
v
Note
the
logical
drive
name
you
assign
when
you
map
the
new
logical
drive
to
the
blade
server.
You
need
this
name
to
find
the
SAS
address
of
a
boot
device.
v
Note
the
logical
unit
number
(LUN)
you
assign
when
you
map
the
new
logical
drive
to
the
blade
server.
You
need
this
LUN
when
defining
the
logical
drive
as
a
boot
device
for
the
blade
server.
Each
logical
drive
is
automatically
assigned
to
one
of
the
controllers
of
the
BladeCenter
Boot
Disk
System.
This
controller
becomes
the
preferred
controller
of
the
logical
drive.
6.
Find
out
the
SAS
address
for
the
boot
device.
a.
Click
the
Summary
tab.
Network
SAS
adapter
card
BladeCenter QS22
BladeCenter unit
BladeCenter
Boot Disk System
SAS fabric
Management station
SAS
connectivity
module
Storage
Manager
SAS
connectivity
module
Figure
28.
BladeCenter
Boot
Disk
System
setup
for
the
QS22
blade
server
Chapter
6.
Installing
the
operating
system
57
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