Dell PowerVault TL4000 SCSI Reference Guide - Page 32

Statistic, Counter, structure

Page 32 highlights

Page Length: The Page Length specifies the total number of bytes contained in this log page, not including the four bytes of the header. Statistic Counter structure Byte 0 1 2 3 4 5 6 7 Bit 7 (MSB) DU(0) (MSB) 6 5 4 3 2 1 0 DS(1) TSD(0) Parameter Code (n) ETC(0) TMC(0) Parameter Length (4) Reserved Reserved (LSB) LP(0) Statistic Counter Value (LSB) Field descriptions: Parameter Code : The Parameter Code is a 2-byte value that uniquely identifies the parameter within the log. It ranges from 1..9. DU: Disable Update is set for any parameter that the Host cannot reset. DS: Disable Save. The media changer has no support for SP bit. Set to 1. TSD: Target shall determine save method, set to 0. ETC: No threshold comparison, set to 0. TMC: No threshold supported, set to 0. LP: The List Parameter field is set to zero for parameters that are counters and set to one for parameters that are not counters. Parameter 1 2 3 4 5 6 7 Definition Description DU LP Minutes of Operation: This 4 byte unsigned counter specifies the minutes of 0 0 operation. Every minute the device is turned on this counter will increment. Number of Power-ups: This 4 byte unsigned counter specifies the number of 0 0 times the library is turned on. Number of Firmware This 4 byte unsigned counter specifies the number of 0 0 Updates: times the internal flash code (ROM) has been updated. Number of Loader This 4 byte unsigned counter specifies the number of 0 0 Moves: times the media changer performed a successful Move operation. Number of Event Entries: This 4 byte unsigned counter specifies the number of 0 0 Event entries in the trace buffer. Number of Error Entries: This 4 byte unsigned counter specifies the number of 0 0 Error entries in the trace buffer. Number of This 4 byte unsigned counter specifies the number of 0 0 Informational Entries Informational entries in the trace buffer. 3-18 TL2000 and TL4000 SCSI Reference

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Page
Length:
The
Page
Length
specifies
the
total
number
of
bytes
contained
in
this
log
page,
not
including
the
four
bytes
of
the
header.
Statistic
Counter
structure
Bit
7
6
5
4
3
2
1
0
Byte
0
(MSB)
Parameter
Code
(
n
)
1
(LSB)
2
DU(0)
DS(1)
TSD(0)
ETC(0)
TMC(0)
Reserved
Reserved
LP(0)
3
Parameter
Length
(4)
4
(MSB)
5
Statistic
Counter
Value
6
7
(LSB)
Field
descriptions:
Parameter
Code
:
The
Parameter
Code
is
a
2-byte
value
that
uniquely
identifies
the
parameter
within
the
log.
It
ranges
from
1..9.
DU:
Disable
Update
is
set
for
any
parameter
that
the
Host
cannot
reset.
DS:
Disable
Save.
The
media
changer
has
no
support
for
SP
bit.
Set
to
1.
TSD:
Target
shall
determine
save
method,
set
to
0.
ETC:
No
threshold
comparison,
set
to
0.
TMC:
No
threshold
supported,
set
to
0.
LP:
The
List
Parameter
field
is
set
to
zero
for
parameters
that
are
counters
and
set
to
one
for
parameters
that
are
not
counters.
Parameter
Definition
Description
DU
LP
1
Minutes
of
Operation:
This
4
byte
unsigned
counter
specifies
the
minutes
of
operation.
Every
minute
the
device
is
turned
on
this
counter
will
increment.
0
0
2
Number
of
Power-ups:
This
4
byte
unsigned
counter
specifies
the
number
of
times
the
library
is
turned
on.
0
0
3
Number
of
Firmware
Updates:
This
4
byte
unsigned
counter
specifies
the
number
of
times
the
internal
flash
code
(ROM)
has
been
updated.
0
0
4
Number
of
Loader
Moves:
This
4
byte
unsigned
counter
specifies
the
number
of
times
the
media
changer
performed
a
successful
Move
operation.
0
0
5
Number
of
Event
Entries:
This
4
byte
unsigned
counter
specifies
the
number
of
Event
entries
in
the
trace
buffer.
0
0
6
Number
of
Error
Entries:
This
4
byte
unsigned
counter
specifies
the
number
of
Error
entries
in
the
trace
buffer.
0
0
7
Number
of
Informational
Entries
This
4
byte
unsigned
counter
specifies
the
number
of
Informational
entries
in
the
trace
buffer.
0
0
3-18
TL2000
and
TL4000
SCSI
Reference