![background image](http://html1.mh-extra.com/html/ibm/totalstorage-ds8000/totalstorage-ds8000_user-manual_4109708029.webp)
The
following
notes
provide
additional
information
about
the
labeled
components
on
Figure
2:
1.
The
rack
power
area
of
each
expansion
model
provides
redundant
power
supplies
(two
primary
power
supplies)
and
power
control
cards.
If
the
expansion
unit
contains
I/O
enclosures
or
the
extended
power
line
disturbance
(PLD)
feature,
three
backup
battery
assemblies
are
also
installed
to
help
protect
data
in
the
event
of
a
loss
of
external
power.
2.
All
expansion
models
allow
up
to
16
disk
enclosures,
which
contain
the
disk
drives.
In
a
maximum
configuration,
each
expansion
model
can
hold
256
disk
drives.
3.
Expansion
models
can
contain
I/O
enclosures
and
adapters
if
they
are
the
first
expansion
units
that
are
attached
to
either
a
Model
922
or
a
Model
9A2.
The
second
expansion
model
in
a
922
or
9A2
configuration
cannot
have
I/O
enclosures
and
adapters,
nor
can
any
expansion
unit
that
is
attached
to
a
Model
921.
If
the
expansion
unit
contains
I/O
enclosures,
the
enclosures
provide
connectivity
between
the
adapters
and
the
processors.
The
adapters
contained
in
the
I/O
enclosures
can
be
either
device
or
host
adapters.
1vxc86
Disk Enclosures and
Disk Drive Sets
I/O Enclosures
and Adaptors
Rack Power
1
2
3
Figure
2.
An
expansion
model
(with
front
cover
off)
and
its
main
components
Chapter
1.
Introduction
to
IBM
TotalStorage
DS8000
series
3
Содержание TotalStorage DS8000
Страница 1: ...IBM TotalStorage DS8000 User s Guide SC26 7623 03...
Страница 2: ......
Страница 3: ...IBM TotalStorage DS8000 User s Guide SC26 7623 03...
Страница 10: ...viii DS8000 User s Guide...
Страница 12: ...x DS8000 User s Guide...
Страница 14: ...xii DS8000 User s Guide...
Страница 24: ...Department 61C 9032 South Rita Road TUCSON AZ 85775 4401 xxii DS8000 User s Guide...
Страница 26: ...xxiv DS8000 User s Guide...
Страница 50: ...24 DS8000 User s Guide...
Страница 116: ...90 DS8000 User s Guide...
Страница 120: ...94 DS8000 User s Guide...
Страница 152: ...126 DS8000 User s Guide...
Страница 166: ...140 DS8000 User s Guide...
Страница 184: ...158 DS8000 User s Guide...
Страница 186: ...160 DS8000 User s Guide...
Страница 192: ...Taiwan class A compliance statement VS07171L 166 DS8000 User s Guide...
Страница 227: ......
Страница 228: ...Printed in USA SC26 7623 03...