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Dell Compellent
55
3
Connect the Back End
Enclosures
are
connected
to
controllers
using
SAS,
a
point
‐
to
‐
point
switched
topology
on
four
lanes.
Each
lane
can
perform
concurrent
IO
transactions
at
6
Gb/sec.
Dell
Compellent
recommends
connecting
the
SAS
drive
enclosures
to
the
controller(s)
using
the
most
redundant
options
that
are
available.
Contents
SAS Enclosure Cabling Guidelines
Multiple
SAS
enclosures
are
connected
to
a
controller
by
cabling
the
enclosures
in
series.
A
series
of
interconnected
enclosures
is
referred
to
as
a
chain.
Each
chain
can
contain
up
to
168
6
Gbps
SAS
drives.
A
SAS
chain
begins
at
an
initiator
port
in
a
controller
IO
card
and
connects
to
the
first
enclosure.
Subsequent
enclosures
are
connected
in
series.
For
single
‐
controller
Storage
Centers,
the
chain
ends
at
the
last
enclosure.
For
dual
‐
controller
Storage
Centers,
the
chain
ends
in
a
target
port
in
the
opposite
controller.
SAS Redundancy
Redundant
SAS
cabling
ensures
that
in
the
event
an
IO
Card
or
port
fails,
IO
continues
to
flow
through
the
remaining
functioning
path(s).
For
dual
‐
controller
Storage
Centers,
redundant
cabling
also
provides
protection
for
controller
failures.
To
achieve
redundancy,
each
SAS
chain
is
made
up
of
two
paths
that
are
referred
to
as
the
A
side
and
B
side.
Содержание SC8000
Страница 1: ...Dell Compellent Storage Center SC8000 Controller Deployment Guide ...
Страница 64: ...Chapter 2 Install the Hardware 54 Storage Center SC8000 Controller Deployment Guide ...
Страница 163: ...Complete the Startup Wizard Dell Compellent 153 6 Click Continue The Generate SSL Cert page appears ...
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Страница 218: ...680 087 001 D ...