Fixing
Fibre
Channel
Errors
If
you
are
connected
to
a
Fibre
Channel
Storage
Area
Network
(SAN)
by
using
a
SAN
Data
Gateway,
use
the
IBM
Storage
Area
Network
Gateway
Module
Setup,
Operator,
and
Service
Guide
to
determine
whether
the
problem
is
occurring
between
the
drive
and
the
SAN
Data
Gateway.
If
you
are
using
a
SCSI
drive
and
are
having
SCSI
problems,
see
“Fixing
SCSI
Bus
Errors”
on
page
86.
Starting
Problem
Determination
Before
starting
the
problem
determination,
perform
the
following
steps:
1.
Determine
the
type
of
Fibre
Channel
topology
that
you
are
using
(see
page
7).
Ensure
that
the
drive
and
the
port
to
which
it
is
attached
are
configured
in
compatible
topologies.
2.
Using
this
guide
or
the
service
guides
of
associated
switch,
hub,
or
fiber
products,
try
to
determine
where
the
problem
exists
(whether
in
the
drive,
cable,
or
the
device
to
which
the
drive
and
cable
attach).
3.
Ensure
that
the
configuration
and
software
levels
are
supported
(see
“Fibre
Channel
Interface”
on
page
7).
4.
Ensure
that
the
Fibre
Channel
cables
are
installed
correctly.
Refer
to
the
appropriate
steps
in
“Installing
the
Drive”
on
page
13.
5.
Go
to
one
of
the
following
procedures:
v
“Fixing
a
Consistent
Error
with
a
Single
Drive
on
a
Fibre
Channel
Loop”
v
“Fixing
a
Consistent
Error
with
Multiple
Drives
on
a
Fibre
Channel
Loop”
on
page
89
v
“Fixing
a
Consistent
Error
in
a
Point-to-Point
Topology”
on
page
89
v
“Fixing
Intermittent
Fibre
Channel
Errors”
on
page
90
Fixing
a
Consistent
Error
with
a
Single
Drive
on
a
Fibre
Channel
Loop
1.
Ensure
that
the
tape
drive
is
powered
on.
2.
Verify
that
the
tape
drive’s
serial
number
is
the
same
as
the
drive
serial
number
that
the
server
program
is
using.
3.
Ensure
that
the
drive’s
Fibre
Channel
AL_PA
is
set
correctly,
that
it
is
on
the
loop,
and
that
it
is
not
being
used
by
another
device
(see
“Setting
the
Arbitrated
Loop
Physical
Address
(Fibre
Channel
Drive
Only)”
on
page
16).
The
tape
drive
must
be
able
to
detect
light
and
communicate
with
the
server.
4.
Run
the
Fibre
Channel
wrap
test
at
the
drive’s
Fibre
Channel
connector
(see
Function
Code
6
in
“Function
Code
6:
Run
SCSI
Wrap
Test”
on
page
37).
v
If
the
test
fails,
replace
the
tape
drive.
v
If
the
test
is
successful,
go
to
step
5.
5.
Run
the
Fibre
Channel
wrap
test
at
the
end
of
the
fiber
cable
(see
Function
Code
6
in
“Function
Code
6:
Run
SCSI
Wrap
Test”
on
page
37).
v
If
the
test
fails,
replace
the
fiber
cable.
v
If
the
test
is
successful,
go
to
step
6.
6.
Check
the
Fibre
Channel
cable
connection
at
the
server.
7.
Using
a
device
driver
utility
such
as
ntutil
or
tapeutil
,
verify
that
the
drive
is
properly
configured
and
available
at
the
server.
8.
If
the
problem
persists,
the
fault
may
be
with
the
server’s
hardware
or
software.
Refer
to
your
server’s
service
manual.
9.
When
the
problem
is
corrected
(or
determined
to
be
a
server
problem),
restore
all
of
the
fiber
cables
to
their
correct
position.
88
IBM
TotalStorage
Ultrium
Tape
Drive
Содержание TotalStorage Ultrium T800
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