IBM System/370 145 Manual page 137

Table 20.27.1. 3410, 2401, and 2415 Magnetic Tape Unit characteristics (continued)
Characteristic
Dual Density
feature
(800 - 1600 BPI)
Data rate (KB)
at 800 BPI
Recording
technique at
800 BPI
IBG size at 800
BPI (inches)
Control unit
Attachment of
tape
units
to control.
Tape sri tching
TloTo-Channel
SloTitch
3410 Ta e Units
Model 1
Optional
10
NRZI
.6
3411
incl.udes
one tape
unit. One
to
three
3410 tape
units can
be added.
Dual
density is
optional.
Radial
Not
avail.able
Not
available
Model 2 Model 3
Optional
20
NRZI
.6
3411
includes
one tape
unit. One
to five
3410 tape
units can
be added.
Dual.
density is
opl:ionaL
Radial
Not
avail.able
Not
available
Optional
40
NRZI
.6
Same as
Model 2
Radial
Not
available
Not
available
2401 Ta Units
Model
Not
available
Model 2
Not
available
2803, 2804 same as
(RWW) Model Model
1
1.
Up to
8
tape units
(Models 1,2,
3)
can be
attached •. _ .
Seven-Track
Compatibil-
ity feature
is ovtionaL
2803, 2804
Model 2
with option-
al Seven-
Track, Nine-
Track, or
Seven- and
Nine-Track
Compatibil-
ity feature.
Series Series
2 x 16 same as
3 x 16 Model 1
4 x 16
(Requires
one or two
2816 units)
Optional Same as
on 2803 Model 1
Model 1 for
Model 67 and
MP65 systems
only.
Model.
4
Optional
30
NRZI
.6
2803, 2804
(RWW) Model
2.
Up to
eight tape
units
(Models
4-, 5, 6,)
can be
attaChed.
Seven-Track
Nine-Track~
or 5even-
and Nine-
Track
Compatibil-
ity feature
is optional.
Series
Same as
Model 1
Not
available
Not
available
Control
integrated
with tape
units.
Model.
1
has
2
units and
control,
Model.
2
has
4 units and
control,
Model 3 has
6
units and
control.
Series
Not
available'
Not
available
Units
Models 4,5,6
Optional
15
NRZI
.6
Control
integrated
with tape
units.
Model 4 has
2
units and
control,
Model
5
has
4
units and
control,
Model 6 has
6 units and
control.
Series
Not
available
Not
available