Set timestamp (a4h), Timestamp, A4h) – Dell PowerVault TL4000 User Manual
Page 89
SET
TIMESTAMP
(A4h)
The
SET
TIMESTAMP
command
requests
the
device
server
to
initialize
the
timestamp
in
the
media
changer,
if
the
SCSIP
bit
is
set
to
one
or
the
TCMOS
bit
is
set
to
one
in
the
Control
Extension
mode
page.
If
the
SCSIP
bit
is
set
to
zero,
the
SET
TIMESTAMP
command
shall
be
terminated
with
CHECK
CONDITION
status,
with
the
sense
key
set
to
ILLEGAL
REQUEST,
and
the
additional
sense
code
set
to
INVALID
FIELD
IN
CDB.
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation
Code
(A4)
1
LUN
Service
Action
(0Fh)
2
Reserved
3
Reserved
4
Reserved
5
Reserved
6
(MSB)
7
Parameter
List
Length
8
9
(LSB)
10
Reserved
11
Control
Field
descriptions:
Parameter
List
Length:
The
PARAMETER
LIST
LENGTH
field
specifies
the
length
in
bytes
of
the
SET
TIMESTAMP
parameters
that
shall
be
transferred
from
the
application
client
to
the
device
server.
A
parameter
list
length
of
zero
indicates
that
no
data
shall
be
transferred,
and
that
no
change
shall
be
made
to
the
timestamp.
The
SET
TIMESTAMP
parameter
data
format
is
shown
in
next
table.
Bit
7
6
5
4
3
2
1
0
Byte
0
-
3
Reserved
4
-
9
Time
Stamp
10
-
11
Reserved
The
TIMESTAMP
field
shall
contain
the
initial
value
of
the
timestamp
in
the
format
defined
in
above
table.
The
Time
Stamp
field
should
be
the
number
of
milliseconds
that
have
elapsed
since
midnight,
1
January
1970
UT.
If
the
high
order
byte
in
the
TIMESTAMP
field
is
greater
than
F0h,
the
command
shall
be
terminated
with
CHECK
CONDITION
status,
with
the
sense
key
set
to
ILLEGAL
REQUEST,
and
the
additional
sense
code
set
to
INVALID
FIELD
IN
PARAMETER
LIST.
On
successful
completion
of
a
SET
TIMESTAMP
command
the
device
server
shall
generate
a
unit
attention
condition
for
the
initiator
port
associated
with
every
I_T
nexus
except
the
I_T
nexus
on
which
the
SET
TIMESTAMP
command
was
received,
with
the
additional
sense
code
set
to
TIMESTAMP
CHANGED.
Chapter
3.
Supported
SCSI
Commands
3-75