IBM 25R0012 User Guide - Page 48

Cartridge, Cleaning

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Data Cartridge All three generations of Ultrium data cartridges contain 1/2-inch, dual-coat, metal-particle tape. The native data capacity of Ultrium data cartridges is as follows: v The Ultrium 3 cartridge has a native data capacity of 400 GB (800 GB at 2:1 compression). v The Ultrium 2 cartridge has a native data capacity of 200 GB (400 GB at 2:1 compression). v The Ultrium 1 cartridge has a native data capacity of 100 GB (200 GB at 2:1 compression). When processing tape in the cartridges, Ultrium Tape Drives use a linear, serpentine recording format. The Ultrium 3 drive reads and writes data on 704 tracks, sixteen tracks at a time. The Ultrium 2 drive reads and writes data on 512 tracks, eight tracks at a time. The Ultrium 1 drive reads and writes data on 384 tracks, eight tracks at a time. The first set of tracks (sixteen for Ultrium 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. Behind the door, the tape is attached to a leader pin 3 . 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. 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. Both generations of the LTO Ultrium Data Cartridge have a nominal cartridge life of 5000 load and unload cycles. Cleaning Cartridge With each drive, a specially labeled LTO Ultrium Cleaning Cartridge is supplied to clean the drive heads. The drive itself determines when a head needs to be cleaned. It alerts you by displaying C on the Single-character Display. To clean the head, insert the cleaning cartridge into the tape load compartment (see "Inserting a Tape Cartridge" on page 13). The drive performs the cleaning automatically. When the cleaning is finished, the drive ejects the cartridge. Note: If a cleaning cartridge is inserted when the drive does not need to be cleaned or when the cartridge has expired, the drive will automatically eject the cartridge. To remove a cleaning cartridge, see "Unload Button" on page 12. The Cleaning Cartridges are valid for 50 uses. 32 IBM 400/800GB LTO3 Tape Drive User's Guide

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Data
Cartridge
All
three
generations
of
Ultrium
data
cartridges
contain
1/2-inch,
dual-coat,
metal-particle
tape.
The
native
data
capacity
of
Ultrium
data
cartridges
is
as
follows:
v
The
Ultrium
3
cartridge
has
a
native
data
capacity
of
400
GB
(800
GB
at
2:1
compression).
v
The
Ultrium
2
cartridge
has
a
native
data
capacity
of
200
GB
(400
GB
at
2:1
compression).
v
The
Ultrium
1
cartridge
has
a
native
data
capacity
of
100
GB
(200
GB
at
2:1
compression).
When
processing
tape
in
the
cartridges,
Ultrium
Tape
Drives
use
a
linear,
serpentine
recording
format.
The
Ultrium
3
drive
reads
and
writes
data
on
704
tracks,
sixteen
tracks
at
a
time.
The
Ultrium
2
drive
reads
and
writes
data
on
512
tracks,
eight
tracks
at
a
time.
The
Ultrium
1
drive
reads
and
writes
data
on
384
tracks,
eight
tracks
at
a
time.
The
first
set
of
tracks
(sixteen
for
Ultrium
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
±2²
protects
the
tape
from
contamination
when
the
cartridge
is
out
of
the
drive.
Behind
the
door,
the
tape
is
attached
to
a
leader
pin
±3²
.
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
±4²
prevents
data
from
being
written
to
the
tape
cartridge.
The
label
area
±5²
provides
a
location
to
place
a
label.
The
insertion
guide
±6²
is
a
large,
notched
area
that
prevents
the
cartridge
from
being
inserted
incorrectly.
Both
generations
of
the
LTO
Ultrium
Data
Cartridge
have
a
nominal
cartridge
life
of
5000
load
and
unload
cycles.
Cleaning
Cartridge
With
each
drive,
a
specially
labeled
LTO
Ultrium
Cleaning
Cartridge
is
supplied
to
clean
the
drive
heads.
The
drive
itself
determines
when
a
head
needs
to
be
cleaned.
It
alerts
you
by
displaying
C
on
the
Single-character
Display.
To
clean
the
head,
insert
the
cleaning
cartridge
into
the
tape
load
compartment
(see
“Inserting
a
Tape
Cartridge”
on
page
13).
The
drive
performs
the
cleaning
automatically.
When
the
cleaning
is
finished,
the
drive
ejects
the
cartridge.
Note:
If
a
cleaning
cartridge
is
inserted
when
the
drive
does
not
need
to
be
cleaned
or
when
the
cartridge
has
expired,
the
drive
will
automatically
eject
the
cartridge.
To
remove
a
cleaning
cartridge,
see
“Unload
Button”
on
page
12.
The
Cleaning
Cartridges
are
valid
for
50
uses.
32
IBM
400/800GB
LTO3
Tape
Drive
User’s
Guide