After
the
read
certify
of
the
disk
surface
completes
for
hdisk
hard
files,
the
certify
operation
performs
2000
random-seek
operations.
Errors
are
also
counted
during
the
random-seek
operations.
If
a
disk
timeout
occurs
before
the
random
seeks
are
finished,
the
disk
needs
to
be
replaced.
The
Certify
service
aid
displays
the
following
information:
–
For
hdisks:
-
Drive
capacity
in
megabytes.
-
Number
of
data
errors
recovered.
-
Number
of
data
errors
not
recovered.
-
Number
of
equipment
checks
recovered.
-
Number
of
equipment
checks
not
recovered.
–
For
pdisks:
-
Drive
capacity
in
megabytes.
-
Number
of
data
errors
not
recovered.
-
Number
of
LBA
reassignments
-
Number
of
equipment
checks
not
recovered.
This
task
can
be
run
directly
from
the
AIX
command
line.
See
the
following
command
syntax:
diag
-c
-d
deviceName
-T
"certify"
Flag
Description
-c
No
console
mode
-d
Specifies
a
device
-T
Specifies
the
certify
task
v
Certify
Hard
File
Attached
to
a
PCI
SCSI
RAID
Adapter
This
selection
is
used
to
certify
physical
disks
attached
to
a
PCI
SCSI
RAID
adapter.
Certify
reads
the
entire
disk
and
checks
for
recovered
errors,
unrecovered
errors,
and
reassigned
errors.
If
these
errors
exceed
the
threshold
values,
the
user
is
prompted
to
replace
the
physical
disk.
This
task
can
be
run
directly
from
the
AIX
command
line.
See
the
following
command
syntax:
diag
-c
-d
RAIDadapterName
-T
"certify
{-l
chID
|
-A}"
Flag
Description
-c
No
console
mode
-d
Specifies
the
RAID
adapter
to
which
the
disk
is
attached
-T
Specifies
the
certify
task
and
its
parameters
-I
Specifies
physical
Disk
channel/ID
(for
example:
-l
27)
-A
All
disks
Change
Hardware
Vital
Product
Data
Use
this
service
aid
to
display
the
Display/Alter
VPD
Selection
Menu.
The
menu
lists
all
resources
installed
on
the
system.
When
a
resource
is
selected,
a
menu
displays
that
lists
all
the
VPD
for
that
resource.
Note:
The
user
cannot
alter
the
VPD
for
a
specific
resource
unless
the
VPD
is
not
machine-readable.
Configure
Dials
and
LPF
Keys
Note:
The
Dials
and
LPF
Keys
service
aid
is
not
supported
in
standalone
mode
(CD-ROM
and
NIM)
on
systems
with
32
MB
or
less
memory.
If
you
have
problems
in
standalone
mode,
use
the
hard
file-based
diagnostics.
This
service
aid
provides
a
tool
for
configuring
and
removing
dials
and
LPF
keys
to
the
asynchronous
serial
ports.
Chapter
7.
Introducing
Tasks
and
Service
Aids
77
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