<s>
The	O
Opal	B-General_Concept
Storage	I-General_Concept
Specification	I-General_Concept
is	O
a	O
set	O
of	O
specifications	O
for	O
features	O
of	O
data	O
storage	O
devices	O
(	O
such	O
as	O
hard	O
disk	O
drives	O
and	O
solid	O
state	O
drives	O
)	O
that	O
enhance	O
their	O
security	O
.	O
</s>
