Dell PowerVault TL4000 SCSI Reference Guide - Page 87

Field, descriptions, Element, Address, Action

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SEND VOLUME TAG (B6h) The SEND VOLUME TAG command transfers a volume tag template to be used for a search of existing volume tag information or new volume tag information for one media changer element address. The function of the command is conveyed by the Send Action Code field value. The REQUEST VOLUME ELEMENT ADDRESS command may be used to transfer the results of a translate search operation. Bit 7 6 5 4 3 2 1 0 Byte 0 Operation Code (B6h) 1 LUN Reserved Element Type Code 2 (MSB) Element Address 3 (LSB) 4 Reserved 5 Reserved Send Action Code 6 - 7 Reserved 8 (MSB) Parameter List Length 9 (LSB) 10 Reserved 11 Control Field descriptions: Element Type Code: The Element Type Code field specifies an element type specification as defined in the Read Element Status command. If the Send Action Code field indicates a translate operation, this field indicates the element types to be searched. If the value is zero, all element types are candidates for a translate operation. If the Send Action Code does not indicate a translate, this field shall be treated as reserved. Element Address: The Element Address field gives the media changer element address whose interpretation depends on the Send Action Code field. When the Send Action Code field is a translate, the Element Address field gives the starting element to be examined for the search operation. When the Send Action Code field is assert, replace, or undefined, the Element Address field gives the specific Element Address where the volume tag information for a volume is to be modified. Send Action Code: The Send Action Code field gives the function to be performed by this command as specified in next table: Code 0h 1h 4h 5h 8h Ah Ch Description Translate - search all defined volume tags Translate - search only primary volume tags Translate - search all defined tags, ignore sequence numbers Translate - search primary tags, ignore sequence numbers Assert - as the primary volume tag, if tag now undefined Replace - the primary volume tag - current tag ignored Undefine - the primary volume tag - current tag ignored Chapter 3. Supported SCSI Commands 3-73

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SEND
VOLUME
TAG
(B6h)
The
SEND
VOLUME
TAG
command
transfers
a
volume
tag
template
to
be
used
for
a
search
of
existing
volume
tag
information
or
new
volume
tag
information
for
one
media
changer
element
address.
The
function
of
the
command
is
conveyed
by
the
Send
Action
Code
field
value.
The
REQUEST
VOLUME
ELEMENT
ADDRESS
command
may
be
used
to
transfer
the
results
of
a
translate
search
operation.
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation
Code
(B6h)
1
LUN
Reserved
Element
Type
Code
2
(MSB)
Element
Address
3
(LSB)
4
Reserved
5
Reserved
Send
Action
Code
6
-
7
Reserved
8
(MSB)
Parameter
List
Length
9
(LSB)
10
Reserved
11
Control
Field
descriptions:
Element
Type
Code:
The
Element
Type
Code
field
specifies
an
element
type
specification
as
defined
in
the
Read
Element
Status
command.
If
the
Send
Action
Code
field
indicates
a
translate
operation,
this
field
indicates
the
element
types
to
be
searched.
If
the
value
is
zero,
all
element
types
are
candidates
for
a
translate
operation.
If
the
Send
Action
Code
does
not
indicate
a
translate,
this
field
shall
be
treated
as
reserved.
Element
Address:
The
Element
Address
field
gives
the
media
changer
element
address
whose
interpretation
depends
on
the
Send
Action
Code
field.
When
the
Send
Action
Code
field
is
a
translate,
the
Element
Address
field
gives
the
starting
element
to
be
examined
for
the
search
operation.
When
the
Send
Action
Code
field
is
assert,
replace,
or
undefined,
the
Element
Address
field
gives
the
specific
Element
Address
where
the
volume
tag
information
for
a
volume
is
to
be
modified.
Send
Action
Code:
The
Send
Action
Code
field
gives
the
function
to
be
performed
by
this
command
as
specified
in
next
table:
Code
Description
0h
Translate
-
search
all
defined
volume
tags
1h
Translate
-
search
only
primary
volume
tags
4h
Translate
-
search
all
defined
tags,
ignore
sequence
numbers
5h
Translate
-
search
primary
tags,
ignore
sequence
numbers
8h
Assert
-
as
the
primary
volume
tag,
if
tag
now
undefined
Ah
Replace
-
the
primary
volume
tag
-
current
tag
ignored
Ch
Undefine
-
the
primary
volume
tag
-
current
tag
ignored
Chapter
3.
Supported
SCSI
Commands
3-73