Cartridge compatibility, Worm (write once, read many), Cartridge – Dell TL2000 User Manual
Page 146: Compatibility, Worm, Write, Once, Read, Many), Ultrium
Type
Native
Data
Capacity
Recording
Format
Ultrium
3
400
GB
(800
GB
at
2:1
compression)
Reads
and
writes
data
on
704
tracks,
sixteen
tracks
at
a
time
Ultrium
2
200
GB
(400
GB
at
2:1
compression)
Reads
and
writes
data
on
512
tracks,
eight
tracks
at
a
time
Ultrium
1
100
GB
(200
GB
at
2:1
compression)
Reads
and
writes
data
on
384
tracks,
eight
tracks
at
a
time
The
first
set
of
tracks
(sixteen
for
Ultrium
4
and
3;
eight
for
Ultrium
2
and
1)
is
written
from
near
the
beginning
of
the
tape
to
near
the
end
of
the
tape.
The
head
then
repositions
to
the
next
set
of
tracks
for
the
return
pass.
This
process
continues
until
all
tracks
are
written
and
the
cartridge
is
full,
or
until
all
data
is
written.
The
cartridge
door
2
protects
the
tape
from
contamination
when
the
cartridge
is
out
of
the
drive.
The
tape
is
attached
to
a
leader
pin
3 ,
behind
the
door.
When
the
cartridge
is
inserted
into
the
drive,
a
threading
mechanism
pulls
the
pin
(and
tape)
out
of
the
cartridge,
across
the
drive
head,
and
onto
a
non-removable
take-up
reel.
The
head
can
then
read
or
write
data
from
or
to
the
tape.
The
write-protect
switch
4
prevents
data
from
being
written
to
the
tape
cartridge.
For
more
information,
see
The
label
area
5
provides
a
location
to
place
a
label.
.
The
insertion
guide
6
is
a
large,
notched
area
that
prevents
the
cartridge
from
being
inserted
incorrectly.
Generation
3
and
4
of
the
LTO
Ultrium
Data
Cartridge
have
a
nominal
cartridge
life
of
20,000
(20k)
load
and
unload
cycles.
Generation
2
has
a
nominal
cartridge
life
of
10,000
(10k)
load
and
unload
cycles.
Generation
1
of
the
LTO
Ultrium
Data
Cartridge
has
a
nominal
cartridge
life
of
5000
(5k)
load
and
unload
cycles.
Cartridge
Compatibility
Table
6-1.
Ultrium
data
and
cleaning
cartridge
compatibility
with
Ultrium
tape
drive
Tape
Drive
LTO
Ultrium
Data
Cartridges
800
GB
(Ultrium
4)
400
GB
(Ultrium
3)
200GB
(Ultrium
2)
100GB
(Ultrium
1)
Ultrium
4
Read/Write
Read/Write
Read
only
Ultrium
3
Read/Write
Read/Write
Read
only
Ultrium
2
Read/Write
Read/Write
Ultrium
1
Read/Write
WORM
(Write
Once,
Read
Many)
Certain
records
retention
and
data
security
applications
require
a
Write
Once,
Read
Many
(WORM)
method
for
storing
data
on
tape.
The
LTO
Ultrium
generation
4
drive
enables
WORM
support
when
a
WORM
tape
cartridge
is
loaded
into
the
drive.
6-2
Dell
PowerVault
TL2000
Tape
Library
and
TL4000
Tape
Library
User's
Guide