<s>
Professional	B-Device
Disc	I-Device
(	O
PFD	O
)	O
is	O
a	O
digital	O
recording	O
optical	B-Device
disc	I-Device
format	O
introduced	O
by	O
Sony	O
in	O
2003	O
primarily	O
for	O
XDCAM	O
,	O
its	O
tapeless	B-Algorithm
camcorder	I-Algorithm
system	O
.	O
</s>
<s>
It	O
was	O
one	O
of	O
the	O
first	O
optical	O
formats	O
to	O
utilize	O
a	O
blue	O
laser	O
,	O
which	O
allowed	O
for	O
a	O
higher	O
density	O
of	O
data	O
to	O
be	O
stored	O
on	O
optical	B-Device
media	I-Device
compared	O
to	O
infrared	O
laser	O
technology	O
used	O
in	O
the	O
CD	B-Device
and	O
red	O
laser	O
technology	O
used	O
in	O
the	O
DVD	O
format	O
.	O
</s>
<s>
This	O
format	O
is	O
sometimes	O
confused	O
with	O
the	O
Blu-ray	O
Disc	O
format	O
,	O
another	O
optical	B-Device
disc	I-Device
format	O
using	O
blue-violet	O
lasers	O
and	O
supported	O
by	O
Sony	O
.	O
</s>
<s>
Professional	B-Device
Disc	I-Device
for	I-Device
DATA	I-Device
(	O
PDD	O
or	O
ProDATA	B-Device
)	O
was	O
a	O
general-use	O
recording	O
media	O
variant	O
of	O
PFD	O
,	O
aimed	O
primarily	O
at	O
small	O
and	O
medium-sized	O
enterprise	O
for	O
data	O
archival	O
and	O
backup	B-Protocol
.	O
</s>
<s>
The	O
BW-RS101	O
external	O
SCSI-3	O
drive	O
originally	O
retailed	O
in	O
the	O
UK	O
at	O
£	O
2,344	O
(	O
excl	O
.	O
</s>
<s>
Two	O
other	O
drives	O
–	O
the	O
BW-F101/A	O
internal	O
SCSI	B-Architecture
drive	O
and	O
the	O
BW-RU101	O
external	O
USB	O
2.0	O
drive	O
also	O
became	O
available	O
around	O
the	O
same	O
time	O
.	O
</s>
<s>
On	O
March	O
31	O
,	O
2007	O
,	O
Professional	B-Device
Disc	I-Device
for	I-Device
DATA	I-Device
reached	O
their	O
"	O
end	O
of	O
life	O
"	O
.	O
</s>
<s>
Sony	O
's	O
PDW-U1	O
Professional	B-Device
Disc	I-Device
drive	O
is	O
an	O
external	O
drive	O
that	O
connects	O
via	O
USB	O
2.0	O
to	O
Windows	O
or	O
Mac	O
OS	O
X	O
computers	O
using	O
the	O
included	O
free	O
software	O
from	O
Sony	O
.	O
</s>
<s>
In	O
a	O
firmware	O
and	O
software	O
upgrade	O
in	O
late	O
July	O
2009	O
,	O
Sony	O
added	O
the	O
ability	O
for	O
computer	O
users	O
to	O
store	O
any	O
computer	O
files	O
on	O
the	O
Professional	B-Device
Disc	I-Device
into	O
the	O
dedicated	O
"	O
User	O
Data	O
"	O
folder	O
.	O
</s>
