Tape in the cloud—Technology developments and roadmaps supporting 80 TB cartridge capacities

Abstract

Tape, which is the storage of magnetic bits on flexible 0.5” wide media, provides critical data storage needs for the Cloud as evidenced by continued growth in exabyte shipments of tape products. This paper outlines the present storage landscape environment for tape, HDD, and NAND flash, describes the tape roadmap for capacity improvements, and presents recording data on narrow track, 32 channel, TMR tape heads spanning read sensor widths from 1.0 μm to 0.20 μm illustrating the potential for 80 TB cartridge operation. Critically, future improvements in tape areal density and tape cartridge capacity are expected to be achieved from evolutionary developments in head/media technology, not requiring revolutionary developments, such as energy assisted magnetic recording technologies required by HDD strategies.

Structural and magnetic properties of CoIrMnAl equiatomic quaternary Heusler alloy epitaxial films designed using first-principles calculations

“…A magnetic tunnel junction (MTJ) exhibits tunnel magnetoresistance (TMR) effect [1,2,3], and is utilized in various storage system [4,5] and non-volatile magnetoresistive random access memories (MRAM) [6]. More recently, advanced computing technologies are emergent and demand MTJs exhibiting huge TMR ratio at room temperature [7,8,9].…”

Leveraging Surface Siloxide Electronics to Enhance the Relaxation Properties of a Single-Molecule Magnet

“…To the best of our knowledge, this represents the largest increase in remanence time upon surface immobilization in comparison to diluted parent SMM reported so far. It is also worth highlighting that, despite the spatial separation (and consequently lowered surface density) of the Dy­(III) sites in 2/SiO 2 , the estimated areal density for information storage in this material (normalized to the specific surface area of silica and considering that each Dy­(III) site acts as a single bit) is at least 1 order of magnitude higher than the 1.2 Tb/in 2 available in conventional hard drive technology . The out-of-phase component of the magnetic susceptibility, χ M ′′, passes through a maximum at oscillation frequencies of the AC driving field that vary with temperature and can be fitted with an extended Debye model between 2 and 17 K (Table S5 and Figure S27).…”

FeZrN Films: Magnetic and Mechanical Properties Relative to the Phase-Structural State

“…With regard to magnetic recording, we note that industrial heads have a high saturation induction of 1.8–2.2 T due to the use of FeCo alloy [ 2 , 67 , 68 , 69 ], whereas our alloy free of expensive cobalt has the comparable induction in weaker magnetic fields. This realizes efficient operation with a lower amperage, a smaller cross-section of electrical conductor, and a smaller number of magnetizing winding turns, which allow one to reduce the size and weight of devices while maintaining their operational characteristics.…”

“…The recent tendency to store more and more data (the amount of data being recorded is increasing by 30 to 40% per year) and for a longer time, which is necessary for archiving, backup, and data protection, cannot be realized by increasing the number of disks since energy expenses related to the complex manufacturing technology of the disks and larger spaces for the storage of them increase their total cost. Tape, which is the storage of magnetic bits on flexible 0.5” wide media, provides critical data storage needs as evidenced by continued growth in exabyte shipments of tape products [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Since the invention of the tape, the recording density on the tape has risen by six orders of magnitude due to the increase in the coercive field of media [ 6 , 8 ].…”

“…Since the invention of the tape, the recording density on the tape has risen by six orders of magnitude due to the increase in the coercive field of media [ 6 , 8 ]. Future improvements in tape areal density and tape cartridge capacity are expected to be achieved from evolutionary developments in the tape-head technology, that is, not requiring revolutionary developments, such as energy assisted magnetic recording technologies required by HDD strategies [ 2 , 6 ].…”