4 results about "Flying height" patented technology

The embodiment of the invention provides a storage device, a tape memory and a storage system, and belongs to the technical field of storage, two sides of a magnetic head of the storage device are provided with cutting edges, the cutting edges can scrape air moving along with a data tape in a read-write state, a low-pressure area is formed between the data tape and the magnetic head to enable the data tape to be close to the magnetic head, and low flying height is achieved. And the read-write efficiency and the read-write precision are improved. The adjusting structures are arranged on the two sides of the magnetic head, each adjusting structure is provided with an arc-shaped face protruding towards the data band, when the data band moves, air is brought into the space between the data band and the adjusting structures to form a gas interval, gas in the gas interval generates a positive pressure effect to support the data band, and the envelope angle and acting force between the data band and the magnetic head are adjusted. The envelope angle and the acting force between the data tape and the magnetic head can be adjusted in a self-adaptive mode through the adjusting structure, it can be guaranteed that low flight height and high read-write efficiency and precision are achieved in the read-write state, the acting force between the data tape and the magnetic head can be reduced in the tape rewinding state, and abrasion between the data tape and the magnetic head is relieved.

According to an embodiment, the method for adjusting a head flying height in a magnetic disk device including a disk, a head that writes or reads data along tracks of the disk, and a heater provided near the head includes: determining a threshold of the head flying height; calculating a statistic from the chronological data of the head flying height; and adjusting the head flying height if the statistic exceeds the threshold.

The invention relates to the technical field of computer storage and fault prediction and health management, and discloses a dynamic bad track prediction and self-repairing method for a storage hard disk, which comprises the following steps: acquiring multi-source underlying physical sensing signals such as read-write error rate, servo offset, magnetic head flight height and the like; constructing a health state evaluation matrix of the logic block address index; performing spatial neighborhood extension marking on the historical bad track to form a high-risk region; identifying early warning blocks with high-risk scores and adjacent bad track features; migrating the data to a healthy target block and updating metadata to realize logic shielding; and the shielding block is continuously monitored and is recovered to be available after reaching the standard. The system comprises a signal acquisition module, a health assessment module, a high-risk marking module, an early warning identification module, a data migration module, a metadata updating module and an observation queue management module. Through multi-dimensional sensing fusion and a dynamic remapping mechanism, early prediction, active avoidance and closed-loop self-repairing of the bad track are realized, the reliability of the hard disk is remarkably improved, and the service life of the hard disk is remarkably prolonged.

A method of manufacturing hard disk drives (HDDs) includes assembling a first HDD including a first slider having a first air bearing surface (ABS) configuration, configuring the first HDD to rotate its disk media at a first revolutions-per-minute (RPM), and sealing the first HDD with a first internal pressure level. Continuing, the method includes assembling a second HDD including a second head slider having the same first ABS configuration, configuring the second HDD to rotate its disk media at a second RPM that is lower than the first RPM, and sealing the second HDD with a second internal pressure level that is higher than the first pressure level. Thus, in the context of using a common slider among different RPM drives, a higher internal pressure for the lower RPM drive can compensate for loss in fly height that might otherwise occur due to the lower operational RPM.