Mode select 10 (55h), Mode, Select – Dell PowerVault TL4000 User Manual
Page 43: 55h)
MODE
SELECT
10
(55h)
The
MODE
SELECT
(10)
command
provides
a
means
for
the
host
to
specify
peripheral
device
parameters
to
the
media
changer.
Application
clients
should
issue
MODE
SENSE
prior
to
each
MODE
SELECT
to
determine
supported
pages,
page
lengths,
changeable
variables
and
to
determine
is
the
page
is
savable
to
NVRAM.
For
documentation
on
the
supported
Mode
Select
pages
refer
to
the
Mode
Select
(6)
description.
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation
Code
(55h)
1
LUN
PF
(1)
Reserved
SP
2
Reserved
3
Reserved
4
Reserved
5
Reserved
6
Reserved
7
IMSB)
Parameter
list
length
8
(LSB)
9
Control
Field
descriptions:
PF:
A
PF
bit
of
one
indicates
that
the
MODE
SELECT
parameters
following
the
header
and
block
descriptor(s)
complies
with
the
SCSI-2
specification.
The
value
must
be
set
to
1.
SP:
A
Save
Pages
(SP)
bit
of
zero
indicates
the
media
changer
shall
perform
the
specified
MODE
SELECT
operation,
and
shall
not
save
any
pages
in
non
volatile
ram.
An
SP
bit
of
one
indicates
that
the
media
changer
shall
perform
the
specified
MODE
SELECT
operation,
and
shall
save
the
current
values
to
a
non
volatile
RAM.
Chapter
3.
Supported
SCSI
Commands
3-29