Restoring
data
on
the
storage
unit
when
attaching
multiple
RS/6000
or
pSeries
host
systems
to
the
storage
unit
You
can
restore
data
on
the
storage
unit
when
attaching
multiple
RS/6000
or
pSeries
host
systems
to
the
storage
unit.
This
procedure
assumes
that
you
have
preserved
the
data
by
following
the
instructions
in
“Saving
data
on
the
storage
unit
when
attaching
multiple
RS/6000
or
pSeries
host
systems
to
the
storage
unit”
on
page
81.
1.
Check
to
be
sure
that
the
storage
unit
physical
volumes
(hdisks)
are
available.
Type
lsdev
-Cc
disk
to
display
the
hdisks
on
the
host
system.
2.
Type
importvg
xxxx
where
xxxx
is
the
name
of
the
volume
group
to
restore
the
storage
unit
volume
groups
to
the
applicable
host
systems
that
are
connected
to
the
storage
unit,
one
system
at
a
time.
3.
Type
smit
chvg
to
verify
that
No
is
selected
for
the
Activate
Volume
Group
Automatically
and
A
Quorum
and
of
disks
required
to
keep
the
volume
group
online?
4.
Type
varyonvg
VGname
to
vary-on
the
storage
unit
volume
groups
to
the
applicable
host
systems
connected
to
the
storage
unit.
Perform
the
steps
one
system
at
a
time.
5.
Type
mount
to
mount
the
storage
unit
volume
groups
to
the
applicable
host
systems
that
are
connected
to
the
storage
unit.
Perform
the
steps
one
system
at
a
time.
6.
If
you
want
to
create
new
volume
groups,
go
to
step
3
in
“Restoring
data
on
the
storage
unit
when
attaching
multiple
RS/6000
or
pSeries
host
systems
to
the
storage
unit.”
Running
the
Linux
operating
system
on
an
IBM
pSeries
host
This
section
describes
how
to
attach
a
pSeries
host
system
running
the
Linux
operating
system
with
a
fibre-channel
adapter.
Attachment
considerations
for
running
the
Linux
operating
system
on
an
IBM
pSeries
host
A
pSeries
host
supports
the
Subsystem
Device
Driver
(SDD)
when
using
the
Linux
operating
system.
The
following
sections
provide
information
that
you
need
to
prepare
your
system
for
SDD.
You
can
also
find
instructions
to
install
and
verify
SDD.
Storage
unit
attachment
is
supported
either
by
directly
attaching
a
storage
unit
port
to
the
host
adapter,
or
by
attaching
through
a
fibre-channel
switch.
You
must
specify
the
proper
attachment
topology
using
the
storage
specialist.
Select
Loop
to
indicate
direct
attachment.
Disabling
automatic
system
updates
Many
Linux
distributions
give
an
administrator
the
ability
to
configure
their
systems
for
automatic
system
updates.
Red
Hat
provides
this
in
the
form
of
a
program
called
up2date,
while
SUSE
provides
it
as
YaST
Online
Update.
These
features
periodically
query
for
updates
that
are
available
for
each
host,
and
can
be
configured
to
automatically
install
any
new
updates
that
it
finds.
This
often
includes
updates
to
the
kernel.
82
DS6000
Host
Systems
Attachment
Guide
Summary of Contents for System storage DS6000 Series
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