Dell PowerVault TL4000 SCSI Reference Guide - Page 84

Report, Timestamp

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REPORT TIMESTAMP (A3h) The REPORT TIMESTAMP command requests that the library return the value of the logical unit s timestamp. Bit 7 Byte 0 1 2 3 4 5 6 (MSB) 7 8 9 10 11 6 LUN 5 4 3 2 1 Operation Code (A3) Service Action (0Fh) Reserved Reserved Reserved Reserved Allocation Length Reserved Control 0 (LSB) Field descriptions: Allocation Length: The Allocation Length field specifies the number bytes the application client has allocated for the returned data. The Timestamp shall not be affected by an I_T nexus loss or a logical unit reset. The Timestamp is cleared on a hard reset event. The REPORT TIMESTAMP parameter data format is shown in next table. Bit 7 Byte 0 - 1 2 3 4 - 9 10 11 6 5 4 3 2 1 0 Timestamp parameter data length (0Ah) Reserved Reserved Timestamp Reserved Timestamp Origin Field descriptions: Timestamp parameter data length: The Timestamp parameter data length field indicates the number of bytes of parameter data that follow. Timestamp Origin : The Timestamp origin field indicates the origin of the timestamp. Code Description 3-70 TL2000 and TL4000 SCSI Reference

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REPORT
TIMESTAMP
(A3h)
The
REPORT
TIMESTAMP
command
requests
that
the
library
return
the
value
of
the
logical
unit
s
timestamp.
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation
Code
(A3)
1
LUN
Service
Action
(0Fh)
2
Reserved
3
Reserved
4
Reserved
5
Reserved
6
(MSB)
7
Allocation
Length
8
9
(LSB)
10
Reserved
11
Control
Field
descriptions:
Allocation
Length:
The
Allocation
Length
field
specifies
the
number
bytes
the
application
client
has
allocated
for
the
returned
data.
The
Timestamp
shall
not
be
affected
by
an
I_T
nexus
loss
or
a
logical
unit
reset.
The
Timestamp
is
cleared
on
a
hard
reset
event.
The
REPORT
TIMESTAMP
parameter
data
format
is
shown
in
next
table.
Bit
7
6
5
4
3
2
1
0
Byte
0
-
1
Timestamp
parameter
data
length
(0Ah)
2
Reserved
Timestamp
Origin
3
Reserved
4
-
9
Timestamp
10
-
11
Reserved
Field
descriptions:
Timestamp
parameter
data
length:
The
Timestamp
parameter
data
length
field
indicates
the
number
of
bytes
of
parameter
data
that
follow.
Timestamp
Origin
:
The
Timestamp
origin
field
indicates
the
origin
of
the
timestamp.
Code
Description
3-70
TL2000
and
TL4000
SCSI
Reference