<s>
There	O
are	O
currently	O
nine	O
series	O
of	O
My	O
Book	O
drives	O
;	O
Essential	O
Edition	O
,	O
Home	O
Edition	O
,	O
Office	O
Edition	O
,	O
Mirror	O
Edition	O
,	O
Studio	O
Edition	O
,	O
Premium	O
Edition	O
,	O
Elite	O
Edition	O
,	O
Pro	O
Edition	O
,	O
AV	B-Device
Dvr	B-Application
"	O
Live	O
Edition	O
"	O
,	O
and	O
the	O
World	O
Edition	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
book-like	O
design	O
,	O
the	O
My	O
Book	O
Essential	O
Edition	O
drives	O
have	O
an	O
Intelligent	O
Power	O
Management	O
feature	O
that	O
stops	O
the	O
drive	B-Device
platters	I-Device
after	O
ten	O
minutes	O
of	O
inactivity	O
,	O
rather	O
than	O
the	O
usual	O
expedient	O
of	O
slowing	O
them	O
down	O
.	O
</s>
<s>
"	O
Essential	O
Edition	O
"	O
drives	O
used	O
USB	B-Protocol
2.0	O
for	O
connectivity	O
are	O
available	O
in	O
capacities	O
of	O
80	O
GB	O
,	O
160	O
GB	O
,	O
250	O
GB	O
,	O
320	O
GB	O
,	O
400	O
GB	O
,	O
500	O
GB	O
and	O
750	O
GB	O
.	O
</s>
<s>
Premium	O
Edition	O
drives	O
are	O
similar	O
to	O
the	O
Essential	O
Edition	O
model	O
but	O
also	O
include	O
FireWire	B-Protocol
400	O
ports	O
,	O
an	O
integrated	O
visual	O
capacity	O
gauge	O
and	O
Western	O
Digital	O
backup	O
software	O
.	O
</s>
<s>
The	O
Pro	O
Edition	O
My	O
Books	O
contain	O
all	O
of	O
the	O
features	O
of	O
the	O
Premium	O
Edition	O
ones	O
,	O
but	O
with	O
added	O
FireWire	B-Protocol
800	O
connectivity	O
for	O
fast	O
data	O
transfer	O
.	O
</s>
<s>
The	O
Pro	O
Edition	O
My	O
Book	O
is	O
marketed	O
as	O
a	O
RAID	B-Architecture
solution	O
that	O
can	O
be	O
used	O
as	O
a	O
backup	O
device	O
.	O
</s>
<s>
The	O
World	O
Edition	O
My	O
Books	O
function	O
as	O
network-attached	B-Application
storage	I-Application
(	O
NAS	B-Application
)	O
,	O
by	O
way	O
of	O
an	O
Ethernet	O
interface	O
.	O
</s>
<s>
They	O
also	O
feature	O
an	O
extra	O
USB	B-Protocol
host	O
port	O
to	O
allow	O
an	O
additional	O
USB	B-Protocol
drive	O
to	O
be	O
daisy	B-Application
chained	I-Application
.	O
</s>
<s>
Data	O
on	O
first	O
generation	O
(	O
Blue	O
Rings	O
)	O
My	O
Book	O
World	O
is	O
accessed	O
as	O
CIFS/SMB	B-Operating_System
shared	O
folders	O
.	O
</s>
<s>
The	O
second	O
generation	O
(	O
White	O
Lights	O
)	O
expands	O
the	O
access	O
choices	O
to	O
include	O
NFS	B-Protocol
,	O
FTP	O
,	O
an	O
iTunes	O
server	O
,	O
and	O
a	O
Twonky	O
media	O
server	O
.	O
</s>
<s>
In	O
addition	O
,	O
the	O
World	O
Edition	O
uses	O
WD	B-Device
Anywhere	I-Device
Access	I-Device
to	O
gain	O
remote	B-Protocol
access	I-Protocol
to	O
the	O
drive	O
via	O
the	O
Internet	O
.	O
</s>
<s>
Especially	O
for	O
older	O
"	O
blue	O
rings	O
"	O
models	O
(	O
200MHz	O
ARM	B-Architecture
CPU	O
and	O
32	O
MiB	O
RAM	O
)	O
,	O
where	O
it	O
varies	O
between	O
3	O
–	O
6	O
MB/s	O
,	O
with	O
an	O
average	O
of	O
4.5	O
MB/s	O
.	O
</s>
<s>
The	O
newer	O
"	O
white	O
lights	O
"	O
My	O
Book	O
World	O
Edition	O
1	O
TB	O
and	O
2	O
TB	O
storage	O
capacity	O
models	O
,	O
WDH1NC	O
and	O
WDH2NC	O
(	O
oxnas810	O
,	O
380MHz	O
ARM	B-Architecture
CPU	O
and	O
128	O
MiB	O
RAM	O
)	O
,	O
have	O
drive	O
speeds	O
comparable	O
to	O
USB	B-Protocol
,	O
at	O
about	O
10	O
MB/s	O
write	O
and	O
25	O
MB/s	O
read	O
.	O
</s>
<s>
The	O
"	O
white	O
lights	O
"	O
WDH1NC	O
is	O
jumbo	B-Protocol
frames	I-Protocol
capable	O
and	O
can	O
achieve	O
~	O
36	O
MB/s	O
reading	O
and	O
~	O
18	O
MB/s	O
writing	O
speed	O
over	O
Gigabit	O
Ethernet	O
.	O
</s>
<s>
This	O
drive	O
runs	O
BusyBox	B-Application
on	O
Linux	B-Application
on	O
an	O
Oxford	O
Semiconductor	O
0XE800	O
ARM	B-Architecture
chip	I-Architecture
which	O
has	O
the	O
ARM926EJ-S	O
core	O
.	O
</s>
<s>
The	O
webserver	O
is	O
the	O
mini_http	O
server	O
,	O
although	O
older	O
"	O
bluerings	O
"	O
use	O
Lighttpd	B-Protocol
.	O
</s>
<s>
The	O
drives	O
of	O
the	O
World	O
Edition	O
are	O
xfs	B-Application
or	O
ext3	B-Application
formatted	O
,	O
which	O
means	O
that	O
the	O
drive	O
can	O
be	O
mounted	O
as	O
a	O
standard	O
drive	O
from	O
within	O
Linux	B-Application
if	O
removed	O
from	O
the	O
casing	O
and	O
installed	O
in	O
a	O
normal	O
PC	O
.	O
</s>
<s>
With	O
both	O
sets	O
of	O
commands	O
a	O
utility	O
such	O
as	O
Gparted	B-Application
can	O
be	O
used	O
to	O
determine	O
which	O
paths	O
are	O
relevant	O
for	O
a	O
given	O
setup	O
.	O
</s>
<s>
The	O
device	O
can	O
be	O
'	O
unlocked	O
 '	O
and	O
accessed	O
via	O
SSH	B-Protocol
terminal	O
(	O
newer	O
versions	O
of	O
WDH1NC10000	O
do	O
not	O
need	O
to	O
be	O
"	O
unlocked	O
"	O
:	O
)	O
,	O
meaning	O
that	O
the	O
WD	O
MioNet	B-Device
Java-based	B-Language
software	I-Language
can	O
be	O
disabled	O
so	O
the	O
device	O
can	O
be	O
run	O
with	O
an	O
unrestricted	O
Linux	B-Application
OS	I-Application
,	O
at	O
the	O
cost	O
of	O
voiding	O
the	O
warranty	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
user	O
can	O
run	O
a	O
different	O
web	O
server	O
or	O
an	O
ftp	O
server	O
(	O
such	O
as	O
vsftpd	O
)	O
on	O
it	O
,	O
use	O
NFS	B-Protocol
for	O
mounting	O
shared	O
directories	O
natively	O
from	O
Unix	B-Application
,	O
or	O
install	O
a	O
bitTorrent	O
client	O
such	O
as	O
rTorrent	B-Language
.	O
</s>
<s>
My	O
Book	O
Premium	O
ES	O
Edition	O
drives	O
are	O
nearly	O
identical	O
to	O
their	O
Premium	O
Edition	O
counterparts	O
,	O
the	O
only	O
difference	O
being	O
that	O
the	O
ES	O
line	O
features	O
a	O
single	O
eSATA	O
connection	O
instead	O
of	O
the	O
dual	O
FireWire	B-Protocol
400	O
ports	O
present	O
on	O
the	O
Premium	O
Edition	O
,	O
allowing	O
computers	O
with	O
available	O
eSATA	O
ports	O
to	O
transfer	O
data	O
at	O
speeds	O
of	O
up	O
to	O
3	O
Gbit/s	O
.	O
</s>
<s>
The	O
My	O
Book	O
Studio	O
Edition	O
comes	O
with	O
quad	O
interface	O
:	O
USB	B-Protocol
2.0	O
/	O
FireWire	B-Protocol
400	O
/	O
FireWire	B-Protocol
800	O
and	O
eSATA	O
.	O
</s>
<s>
The	O
current	O
edition	O
(	O
as	O
of	O
November	O
2010	O
)	O
has	O
two	O
FireWire	B-Protocol
800	O
ports	O
and	O
one	O
USB	B-Protocol
2.0	O
mini	O
port	O
.	O
</s>
<s>
The	O
My	O
Book	O
Studio	O
Edition	O
II	O
contains	O
two	O
drives	O
and	O
is	O
designed	O
to	O
be	O
used	O
as	O
a	O
RAID	B-Architecture
system	O
for	O
increased	O
performance	O
.	O
</s>
<s>
In	O
2011	O
,	O
Western	O
Digital	O
released	O
the	O
My	O
Book	O
Live	O
Edition	O
NAS	B-Application
.	O
</s>
<s>
Contrary	O
to	O
previous	O
versions	O
,	O
Live	O
has	O
no	O
USB	B-Protocol
ports	O
.	O
</s>
<s>
Instead	O
of	O
a	O
Linux-Kernel	O
&	O
Busybox	B-Application
found	O
in	O
previous	O
versions	O
,	O
Live	O
uses	O
a	O
full-featured	O
Debian	O
GNU/Linux	B-Application
.	O
</s>
<s>
It	O
features	O
two	O
drives	O
(	O
totaling	O
6	O
or	O
4TB	O
,	O
depending	O
on	O
the	O
product	O
version	O
)	O
that	O
can	O
be	O
configured	O
in	O
a	O
RAID	B-Architecture
array	I-Architecture
;	O
in	O
that	O
case	O
,	O
all	O
data	O
is	O
automatically	O
mirrored	O
and	O
can	O
be	O
recovered	O
if	O
one	O
of	O
the	O
drives	O
fail	O
(	O
but	O
effective	O
drive	O
space	O
is	O
halved	O
)	O
.	O
</s>
<s>
It	O
also	O
has	O
one	O
Gigabit	O
Ethernet	O
and	O
one	O
USB	B-Protocol
connection	O
.	O
</s>
<s>
The	O
My	O
Book	O
AV	B-Device
DVR	B-Application
Expander	O
is	O
intended	O
to	O
increase	O
the	O
disk	O
capacity	O
of	O
consumer	O
DVRs	O
or	O
compatible	O
camcorders	O
.	O
</s>
<s>
The	O
DVR	B-Application
Expander	O
was	O
originally	O
designed	O
specifically	O
for	O
the	O
TiVo	B-Application
series	O
3	O
and	O
onwards	O
and	O
,	O
at	O
that	O
time	O
,	O
the	O
only	O
connectivity	O
was	O
an	O
eSATA	O
port	O
.	O
</s>
<s>
Recent	O
versions	O
come	O
with	O
a	O
USB	B-Protocol
2.0	O
connection	O
,	O
as	O
well	O
,	O
and	O
are	O
compatible	O
with	O
Direct	O
TV	O
,	O
Dish	O
TV	O
,	O
and	O
the	O
Pace	O
,	O
Time	O
Warner	O
and	O
Scientific	O
Atlanta	O
brands	O
of	O
DVR	B-Application
.	O
</s>
<s>
In	O
2013	O
,	O
My	B-Device
Cloud	I-Device
NAS	B-Application
has	O
been	O
released	O
by	O
Western	O
Digital	O
.	O
</s>
<s>
My	B-Device
Cloud	I-Device
uses	O
a	O
Mindspeed	O
Comcerto	O
2000	O
(	O
M86261G-12	O
)	O
dual-core	O
ARM	B-Architecture
Cortex-A9	O
Communication	O
Processor	O
running	O
at	O
650MHz	O
.	O
</s>
<s>
Other	O
components	O
include	O
256	O
MiB	O
of	O
Samsung	O
K4B2G1646E	O
DDR3	O
RAM	O
and	O
512	O
KB	O
of	O
Winbound	O
25X40CL	O
flash	B-Device
.	O
</s>
<s>
My	B-Device
Cloud	I-Device
relies	O
on	O
air	O
convection	O
for	O
cooling	O
,	O
not	O
a	O
fan	O
.	O
</s>
<s>
On	O
24	O
June	O
2021	O
,	O
users	O
reported	O
that	O
their	O
My	O
Book	O
drives	O
had	O
apparently	O
been	O
wiped	O
the	O
day	O
before	O
in	O
a	O
factory	B-General_Concept
reset	I-General_Concept
,	O
perhaps	O
via	O
malware	O
.	O
</s>
