<s>
Wren	O
was	O
the	O
major	O
brand	O
name	O
for	O
a	O
series	O
of	O
5.25-inch	O
hard	B-Device
disks	I-Device
produced	O
by	O
Control	O
Data	O
Corporation	O
(	O
CDC	O
)	O
for	O
the	O
microcomputer	B-Architecture
market	O
during	O
the	O
1980s	O
.	O
</s>
<s>
The	O
brand	O
evolved	O
through	O
seven	O
major	O
versions	O
,	O
I	O
through	O
VII	O
,	O
using	O
custom	O
attachments	O
but	O
later	O
adapting	O
SCSI	B-Architecture
and	O
IDE	B-Protocol
.	O
</s>
