Single data band data storage
View Patent ↗Provided are a computer program product, device, system, and method for single data band data storage. In one embodiment, a tape head module has an array of four servo transducer elements for each servo band of a tape and an array of reader/writer transducer elements extending over most of the width of the tape. In another embodiment, a data storage tape has a top servo band positioned adjacent a top edge guard band of the tape, a bottom servo band positioned adjacent a bottom edge guard band of the tape, and a single data band positioned between the top and bottom servo bands and configured to receive tracks of data written by a tape head wherein the single data band width extends over most of the tape width.
1. A data storage tape for a tape head having an array of N E writer transducer elements carried on a substrate for writing tracks of data on the tape, the tape having a top longitudinal edge and a bottom longitudinal edge and a tape width W Tape extending between the top and bottom longitudinal edges of the tape, and a plurality of longitudinal regions between the top and bottom longitudinal edges including:
a top edge guard band of width W Edge positioned adjacent the top longitudinal edge of the tape;
a bottom edge guard band of width W Edge positioned adjacent the bottom longitudinal edge of the tape;
a top servo band of width W SB positioned adjacent the top guard band of the tape;
a bottom servo band of width W SB positioned adjacent the bottom guard band of the tape; and
a single data band of width W DB positioned between the top and bottom servo bands and configured to receive tracks of data written by the tape head controlled by the top and bottom servo bands wherein the data band width W DB extends over most of the tape width W Tape .
2. The tape of claim 1 wherein the width of the tape, W Tape , is 12,650±20 microns; the width of the servo band on Tape, W SB , is within a range of
W
EP
.
Tape
4
-
3
microns
and
W
EP
.
Tape
4
+
12
microns
;
the top and bottom servo bands are separated by a width W HeadSpan.Tape wherein:
W HeadSpan.Tape is within a range of
(
N
E
+
1
4
)
·
W
EP
.
Tape
-
3
microns
and
(
N
E
+
1
4
)
·
W
EP
.
Tape
+
12
microns
;
and wherein the Element pitch on tape,
W
EP
.
Tape
,
is
W
Tape
-
2
·
W
Edge
N
E
+
1
2
.
3. The tape of claim 1 wherein W SB is within a range of 48 microns−3 microns to 48 microns+7 microns.
4. The tape of claim 1 wherein the tape width W Tape is within a range of 12,650 microns±20 microns.
5. The tape of claim 4 wherein the top and bottom servo bands are separated by a width W HeadSpan.Tape , which is within a range of 11,594 microns±5 microns.
6. The tape of claim 5 wherein the data band has a sub data band for each writer transducer element of the array of N E writer transducer elements, and the tape has two servo buffer regions each having a width W SBuf and each being positioned between a servo band and an adjacent sub data band, wherein:
W SB is within a range of 48 microns−3 microns and 48 microns+7 microns.
7. A method, comprising:
formatting a data storage tape for use with a tape head having an array of N E writer transducer elements carried on a substrate for writing tracks of data on the tape, the tape having a top longitudinal edge and a bottom longitudinal edge and a tape width W Tape extending between the top and bottom longitudinal edges of the tape, the formatting including forming a plurality of longitudinal regions between the top and bottom longitudinal edges of the tape including:
forming a top edge guard band of width W Edge positioned adjacent the top longitudinal edge of the tape;
forming a bottom edge guard band of width W Edge positioned adjacent the bottom longitudinal edge of the tape;
forming a top servo band of width W SB positioned adjacent the top guard band of the tape;
forming a bottom servo band of width W SB positioned adjacent the bottom guard band of the tape; and
forming space for a single data band of width W DB positioned between the top and bottom servo bands and configured to receive tracks of data written by the tape head controlled by the top and bottom servo bands wherein the data band width W DB extends over most of the tape width W Tape .
8. The method of claim 7 wherein the width of the tape, W Tape , is 12,650±20 microns, and wherein the element pitch on tape,
W
EP
.
Tape
,
is
W
Tape
-
2
·
W
Edge
N
E
+
1
2
.
9. The method of claim 8 wherein the width of the servo band on Tape W SB is within a range of
W
EP
.
Tape
4
-
3
microns
and
W
EP
.
Tape
4
+
12
microns
;
wherein the top and bottom servo bands are separated by a width W HeadSpan.Tape wherein:
W HeadSpan.Tape is within a range of
(
N
E
+
1
4
)
·
W
EP
.
Tape
-
3
microns
and
(
N
E
+
1
4
)
·
W
EP
.
Tape
+
12
microns
.
10. The method of claim 7 wherein W SB is within a range of 48 microns−3 microns to 48 microns+7 microns.
11. The method of claim 7 wherein the tape width W Tape is within a range of 12,650 microns±20 microns.
12. The method of claim 9 wherein the top and bottom servo bands are separated by a width W HeadSpan.Tape , which is within a range of 11,594 microns±5 microns.
13. The method of claim 12 wherein the data band has a sub data band for each writer transducer element of the array of N E writer transducer elements, and the tape has two servo buffer regions each having a width W SBuf and each being positioned between a servo band and an adjacent sub data band, wherein:
W SB is within a range of 48 microns−3 microns and 48 microns±7 microns.
14. A computer program product for formatting a data storage tape for use with a tape head having an array of N E writer transducer elements carried on a substrate for writing tracks of data on the tape, the tape having a top longitudinal edge and a bottom longitudinal edge and a tape width W Tape extending between the top and bottom longitudinal edges of the tape, wherein the computer program product comprises a computer readable storage medium, implemented in a tape formatting system, having computer readable program code embodied therein that when executed performs operations, the operations comprising:
forming a plurality of longitudinal regions between the top and bottom longitudinal edges of the tape including:
forming a top edge guard band of width W Edge positioned adjacent the top longitudinal edge of the tape;
forming a bottom edge guard band of width W Edge positioned adjacent the bottom longitudinal edge of the tape;
forming a top servo band of width W SB positioned adjacent the top guard band of the tape;
forming a bottom servo band of width W SB positioned adjacent the bottom guard band of the tape; and
forming space for a single data band of width W DB positioned between the top and bottom servo bands and configured to receive tracks of data written by the tape head controlled by the top and bottom servo bands wherein the data band width W DB extends over most of the tape width W Tape .
15. The computer program product of claim 14 wherein the width of the tape, W Tape , is 12,650±20 microns; the width of the servo band on Tape, and wherein the element pitch on tape,
W
EP
.
Tape
,
is
W
Tape
-
2
·
W
Edge
N
E
+
1
2
.
16. The computer program product of claim 15 wherein W SB is within a range of
W
EP
.
Tape
4
-
3
microns
and
W
EP
.
Tape
4
+
12
microns
;
and
wherein the top and bottom servo bands are separated by a width W HeadSpan.Tape wherein:
W HeadSpan.Tape is within a range of
(
N
E
+
1
4
)
·
W
EP
.
Tape
-
3
microns
and
(
N
E
+
1
4
)
·
W
EP
.
Tape
+
12
microns
.
17. The computer program product of claim 14 wherein W SB is within a range of 48 microns−3 microns to 48 microns+7 microns.
18. The computer program product of claim 14 wherein the tape width W Tape is within a range of 12,650 microns±20 microns.
19. The computer program product of claim 16 wherein the top and bottom servo bands are separated by a width W HeadSpan.Tape , which is within a range of 11,594 microns±5 microns.
20. The computer program product of claim 19 wherein the data band has a sub data band for each writer transducer element of the array of N E writer transducer elements, and the tape has two servo buffer regions each having a width W SBuf and each being positioned between a servo band and an adjacent sub data band, wherein:
W SB is within a range of 48 microns−3 microns and 48 microns+7 microns.