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Front-End Connectivity Modes
Dell Compellent
101
Failover Behavior for Legacy Mode and Virtual Port Mode
Legacy
mode
and
virtual
port
mode
behave
differently
during
failure
conditions
because
they
use
different
mechanisms
to
provide
fault
tolerance.
Scenario
Virtual Port Mode
Legacy Mode
Normal
operating
conditions All
ports
are
active
and
pass
IO.
• Primary
ports
pass
IO.
• Reserved
ports
remain
in
a
standby
mode
until
a
controller
failure.
A
controller
fails
in
a
dual
‐
controller
Storage
Center
Virtual
ports
on
the
failed
controller
move
to
physical
ports
on
the
functioning
controller.
Primary
ports
on
the
failed
controller
fail
over
to
reserved
ports
on
the
functioning
controller.
A
single
port
fails
(single
‐
or
dual
‐
controller
Storage
Center)
An
individual
port
fails
over
to
another
port
in
the
fault
domain.
The
port
does
not
fail
over
because
there
was
no
controller
failure.
If
a
second
path
is
available,
MPIO
software
on
the
server
provides
fault
tolerance.
Note:
In
Legacy
mode,
reserve
ports
and
primary
ports
reside
on
separate
controllers,
providing
controller
‐
level
failover
only.
Legacy
mode
does
not
provide
port
‐
level
failover.
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 ...
Страница 217: ......
Страница 218: ...680 087 001 D ...