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Transport, Geometry, Parameters – Dell PowerVault TL2000 User Manual

Page 39: 1eh), Page

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Field

descriptions:

First

Medium

Transport

Element

Address:

By

means

of

this

field

the

host

can

specify

the

address

of

the

accessor

cartridge

handler.

Number

of

Medium

Transport

Elements:

By

means

of

this

field

the

host

can

specify

the

number

of

robotic

cartridge

handlers

within

the

library.

If

the

Number

of

Medium

Transport

Elements

is

greater

than

the

default

value

returned

in

the

Mode

Sense

parameter

data,

the

library

shall

return

a

Check

Condition.

First

Storage

Element

Address:

By

means

of

this

field

the

host

can

specify

the

starting

address

for

the

cartridge

storage

locations.

Number

of

Storage

Elements:

By

means

of

this

field

the

host

can

specify

the

number

of

cartridge

storage

locations.

If

the

Number

of

Storage

Elements

is

greater

than

the

default

value

returned

in

the

Mode

Sense

parameter

data,

the

library

shall

return

a

Check

Condition.

First

Import/Export

Element

Address:

By

means

of

this

field

the

host

can

specify

the

address

of

the

import/export

element.

Number

of

Import/Export

Elements:

By

means

of

this

field

the

host

can

specify

the

maximum

number

of

import/export

elements.

If

the

Number

of

Import/Export

Elements

is

greater

than

the

default

value

returned

in

the

Mode

Sense

parameter

data,

the

library

shall

return

a

Check

Condition.

First

Data

Transfer

Element:

By

means

of

this

field

the

host

can

specify

the

starting

address

of

the

installed

tape

drives.

Number

of

Data

Transfer

Elements:

By

means

of

this

field

the

host

can

specify

the

number

of

tape

drives

installed.

If

the

Number

of

Data

Transfer

Elements

is

greater

than

the

default

value

returned

in

the

Mode

Sense

parameter

data,

the

library

shall

return

a

Check

Condition.

Note:

The

actual

number

of

installed

elements

cannot

be

changed

by

the

field

values

in

the

Element

Address

Assignment

page.

Specifying

a

value

other

than

the

specified

number

returns

a

Check

Condition

status

with

the

Sense

Key

set

to

ILLEGAL

REQUEST.

Transport

Geometry

Parameters

page

(1Eh)

The

Transport

Geometry

Parameters

Page

is

provided

in

the

SCSI-2

command

set

to

determine

whether

each

medium

transport

element

is

a

member

of

a

set

of

elements

in

a

robotic

subsystem,

and

if

the

medium

transport

is

capable

of

media

rotation.

The

initiator

cannot

change

this

information.

Bit

7

6

5

4

3

2

1

0

Byte

0

Reserved

SPF

(0)

Page

Code

(1Eh)

1

Additional

Page

Length

(02h)

2

Reserved

Rotate

(0)

3

Member

Number

in

Transport

Element

Set

(0)

Field

descriptions:

Rotate:

Rotation

of

media

is

not

an

implemented

feature,

so

the

value

returned

for

this

field

bit

is

0.

Member

Number

in

Transport

Element

Set:

This

field

indicates

the

specific

transport

element

in

the

system

to

apply

this

descriptor

to.

The

library

has

only

one

transport

element

,

so

the

value

returned

for

this

field

is

0.

Chapter

3.

Supported

SCSI

Commands

3-25