Dell PowerVault TL4000 SCSI Reference Guide - Page 20

HiSup, Response, Format, Additional, Length, Protect, EncServ, MultiP, MChanger, Addr16, WBus16,

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HiSup: A hierarchical support (HISUP) bit set to zero indicates the SCSI target device does not use the hierarchical addressing model to assign LUNs to logical units Response Data Format: This Standard Inquiry Data is in SCSI-2 format. Set to 2. Additional Length: The media changer uses this field to indicate the number of additional bytes of INQUIRY response data available. SCCS: The media changer does not contain an embedded storage array controller component. Set to 0. ACC: The ACC bit set to zero indicates that no access controls coordinator may be addressed through this logical unit. TPGS: The media changer does not support asymmetric logical unit access or supports a form of asymmetric access that is vendor specific. Neither the REPORT TARGET GROUPS nor the SET TARGET GROUPS commands is supported. 3PC: A Third-Party Copy (3PC) bit set to zero indicates that the media changer does not supports third-party copy commands such as the EXTENDED COPY command. Protect: A PROTECT bit set to zero indicates that the media changer does not support protection information. BQue: Basic Queuing is not supported, set to 0. EncServ: An Enclosure Services (ENCSERV) bit set to zero indicates that the media changer does not contain an embedded enclosure services component. MultiP: A MULTIP bit set to zero indicates that this SCSI target device has a single port and does not implement the multi-port requirements. MChanger: This medium changer is not an attached medium changer. Set to 0. Addr16: When Addr16 is set to 1, the media changer does support 16-bit wide SCSI addresses. When set to 0, indicates that the media changer does not support 16-bit wide SCSI addresses. WBus16: When WBus16 is set to 1, the media changer transfers SCSI data over an 16-bit wide bus. When WBus16 is not set data transfers are done over an 8-bit wide bus. Sync: When Sync is set to 1, data transfers are done in synchronous mode. When Sync is not set, data transfers are done in asynchronous mode. Linked: Linked Commands are not supported. Set to 0. CmdQue (Command Queuing): For Fibre Channel, this is returned as 1, indicating command queuing is supported. For SCSI, this is returned as 0, indicating no command queuing is supported. 3-6 TL2000 and TL4000 SCSI Reference

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HiSup:
A
hierarchical
support
(HISUP)
bit
set
to
zero
indicates
the
SCSI
target
device
does
not
use
the
hierarchical
addressing
model
to
assign
LUNs
to
logical
units
Response
Data
Format:
This
Standard
Inquiry
Data
is
in
SCSI-2
format.
Set
to
2.
Additional
Length:
The
media
changer
uses
this
field
to
indicate
the
number
of
additional
bytes
of
INQUIRY
response
data
available.
SCCS:
The
media
changer
does
not
contain
an
embedded
storage
array
controller
component.
Set
to
0.
ACC:
The
ACC
bit
set
to
zero
indicates
that
no
access
controls
coordinator
may
be
addressed
through
this
logical
unit.
TPGS:
The
media
changer
does
not
support
asymmetric
logical
unit
access
or
supports
a
form
of
asymmetric
access
that
is
vendor
specific.
Neither
the
REPORT
TARGET
GROUPS
nor
the
SET
TARGET
GROUPS
commands
is
supported.
3PC:
A
Third-Party
Copy
(3PC)
bit
set
to
zero
indicates
that
the
media
changer
does
not
supports
third-party
copy
commands
such
as
the
EXTENDED
COPY
command.
Protect:
A
PROTECT
bit
set
to
zero
indicates
that
the
media
changer
does
not
support
protection
information.
BQue:
Basic
Queuing
is
not
supported,
set
to
0.
EncServ:
An
Enclosure
Services
(ENCSERV)
bit
set
to
zero
indicates
that
the
media
changer
does
not
contain
an
embedded
enclosure
services
component.
MultiP:
A
MULTIP
bit
set
to
zero
indicates
that
this
SCSI
target
device
has
a
single
port
and
does
not
implement
the
multi-port
requirements.
MChanger:
This
medium
changer
is
not
an
attached
medium
changer.
Set
to
0.
Addr16:
When
Addr16
is
set
to
1,
the
media
changer
does
support
16-bit
wide
SCSI
addresses.
When
set
to
0,
indicates
that
the
media
changer
does
not
support
16-bit
wide
SCSI
addresses.
WBus16:
When
WBus16
is
set
to
1,
the
media
changer
transfers
SCSI
data
over
an
16-bit
wide
bus.
When
WBus16
is
not
set
data
transfers
are
done
over
an
8-bit
wide
bus.
Sync:
When
Sync
is
set
to
1,
data
transfers
are
done
in
synchronous
mode.
When
Sync
is
not
set,
data
transfers
are
done
in
asynchronous
mode.
Linked:
Linked
Commands
are
not
supported.
Set
to
0.
CmdQue
(Command
Queuing):
For
Fibre
Channel,
this
is
returned
as
1,
indicating
command
queuing
is
supported.
For
SCSI,
this
is
returned
as
0,
indicating
no
command
queuing
is
supported.
3-6
TL2000
and
TL4000
SCSI
Reference