Six orders of magnitude in linear tape technology: The one-terabyte project

Childers, Ed; Imaino, W.; Eaton, J.H.; Jaquette, G. A.; Koeppe, P.; Hellman, D. J.

doi:10.1147/rd.474.0471

Cited by 24 publications

(4 citation statements)

References 5 publications

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“…The first commercially available data-storage device relying on magnetic recording was the IBM 726 tape system introduced in 1952 [19], [20]. The 20-inch-diameter cartridge with a 720-meter-long magnetic tape had a capacity of 1.4 MB.…”

Section: Tape Drivesmentioning

confidence: 99%

“…5(a), in which the head and the tape alignment are shown in the presence of a skew angle . The head usually includes two modules that are placed face to face to provide bidirectional read-after-write capability, which is needed to guarantee that no loss of data occurs during write operations [20]. Each module hosts pairs of data writers and readers that are spanned by two servo readers for track following, as shown in Fig.…”

Section: E Dynamic Skew Compensationmentioning

confidence: 99%

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Control Methods in Data-Storage Systems

Cherubini

Chung

Messner

et al. 2012

IEEE Trans. Contr. Syst. Technol.

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Abstract-The recording performance of data-storage devices, in which write/read elements move relative to a storage medium to reliably store and retrieve information, depends on the capability of servo mechanisms to provide the necessary positioning accuracy. The desired characteristics of servo mechanisms for datastorage systems include robustness against variations of environmental parameters, high resolution, accuracy, stability, and fast response. This paper presents a comprehensive overview of advanced servo-control methods for data storage. The applications are to well-established recording technologies, including magnetic tape and magnetic disk systems as well as CD/DVD/Blue-Ray optical data-storage systems. Moreover, newer holographic and nearfield optical systems and the emerging probe-storage technology are also addressed. Emphasis is given to the potential exhibited by the technologies considered for achieving ultra-high storage capacity, as required by the exploding demand in data-storage capacity for archival systems and massive multimedia data storage.Index Terms-Control systems, hard-disk drive, holographic data storage, optical-disk drive, scanning-probe data storage, servomechanism, tape drive.

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Section: Tape Drivesmentioning

confidence: 99%

Section: E Dynamic Skew Compensationmentioning

confidence: 99%

Control Methods in Data-Storage Systems

Cherubini

Chung

Messner

et al. 2012

IEEE Trans. Contr. Syst. Technol.

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“…Due to the specific capacity, low cost (per GB), reliability and longevity of the media, tape storages are regarded as efficient alternative for CDRW, rewritable DVD, Zip, and Jaz in backup, archive and recovery purposes (Chudnow 2000;Harada 2005). Over the past five decades, advanced technologies in components of tape mechanism such as the medium, heads, channels and servo mechatronics lead to more storage capability with satisfying cost-effective concern (Luitjens et al 1998;Mattingly 1999;Childers et al 2003;Dee 2004).…”

Section: Introductionmentioning

confidence: 99%

Robust regulation and tracking system design for multivariable control of the tape transport mechanism

2012

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Tape mechanisms must be able to transport the tape with a constant velocity for achieving high rate of data transfer. In this paper, a multivariable model of tape transport mechanism including the take-up and supply reel servos for tape tension control and capstan servo for speed control is considered. To achieve desired performance, pole-placement approach based on general canonical control form (GCCF) is used. Instead of using expensive tension sensors, an observer is designed. A regulator system is developed for disturbance rejection; and a modified integral control is designed for perfect tracking of desired setpoints in tape speed and tensions. Since the real dynamic model associates with parametric uncertainties, an algorithm is developed for robust pole-placement. Eigenvalues of the uncertain control system are chosen such that appropriate responses are achieved while control efforts remain small bounded. Results show that robust performance is obtained for uncertain models with various parametric uncertainties.

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“…The recording head is than positioned across the tape either by a helical scan method, used mainly in VCR, or by a linear translation, used in modern tape drives. For an overview of state of the art tape positioning see Childers et al (2003). The increase of areal density is mainly achieved by reducing the track width.…”

Section: Positioningmentioning

confidence: 99%

Magnetic Data Storage: Past Present and Future

Thomson

Abelmann

Groenland

Magnetic Nanostructures in Modern Technology

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The design of media, heads, positioning systems and data detection and coding techniques for various generations of magnetic recording systems are discussed. We will start with current systems, such as longitudinal hard disc and tape. Next we will discuss the near future, where perpendicular recording (thicker films, higher stray fields) will address the problem of thermal stability. In the third section we will give an outlook on future developments (patterned media, thermally assisted recording, self assembled arrays of nanoparticles and probe storage).

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Six orders of magnitude in linear tape technology: The one-terabyte project

Cited by 24 publications

References 5 publications

Control Methods in Data-Storage Systems

Control Methods in Data-Storage Systems

Robust regulation and tracking system design for multivariable control of the tape transport mechanism

Magnetic Data Storage: Past Present and Future

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