Abstract: In some examples, a method includes determining, by a processor of a controller of a data storage device, that a voltage level of a capacitor in the data storage device is above a threshold voltage value, wherein the data storage device includes a capacitor circuit, and wherein the capacitor circuit includes the capacitor. The method further includes controlling, by the processor, the capacitor circuit to cause the capacitor to provide power to circuitry associated with memory devices of the data storage device along with power provided by a host device operably connected to the data storage device.

Abstract: A memory device including at least one memory location for storing information representing data written using a first encryption/decryption method, and a read channel using a second encryption/decryption method for reading and decrypting information as written. The memory device also includes an apparatus that prevents the reading of the at least one memory location using the second encryption/decryption method, in response to an indication that the at least one memory location was written using the first encryption/decryption method. In another embodiment, a reading of all zeroes is returned in response to an indication of another encryption/decryption method.

Abstract: A memory device including at least one memory location for storing information representing data written using a first encryption/decryption method, and a read channel using a second encryption/decryption method for reading and decrypting information as written. The memory device also includes an apparatus that prevents the reading of the at least one memory location using the second encryption/decryption method, in response to an indication that the at least one memory location was written using the first encryption/decryption method. In another embodiment, a reading of all zeroes is returned in response to an indication of another encryption/decryption method.

Abstract: A memory device including at least one memory location for storing information representing data written using a first encryption/decryption method, and a read channel using a second encryption/decryption method for reading and decrypting information as written. The memory device also includes an apparatus that prevents the reading of the at least one memory location using the second encryption/decryption method, in response to an indication that the at least one memory location was written using the first encryption/decryption method. In another embodiment, a reading of all zeroes is returned in response to an indication of another encryption/decryption method.

Abstract: A memory device including at least one memory location for storing information representing data written using a first encryption/decryption method, and a read channel using a second encryption/decryption method for reading and decrypting information as written. The memory device also includes an apparatus that prevents the reading of the at least one memory location using the second encryption/decryption method, in response to an indication that the at least one memory location was written using the first encryption/decryption method. In another embodiment, a reading of all zeroes is returned in response to an indication of another encryption/decryption method.

Abstract: A method, which may be embodied upon a computer readable medium and executed by a processor, for dynamically adjusting engine startup parameters for a hard disk drive system. The method includes determining if a drive catch-up condition or a host catch-up condition has occurred and adjusting at least one of a read pad and a write pad if a drive catch-up condition is determined. The method further calculating a pad parameter and an optimal delay parameter if a host catch-up condition is determined. Thereafter, the method includes adjusting the optimal delay parameter with the pad parameter if a host catch-up condition is determined.

Abstract: A method, which may be embodied upon a computer readable medium and executed by a processor, for dynamically adjusting buffer utilization ratios for a hard disk drive system. The method establishes and dynamically adjusts a host transfer goal, which targets the amount of data transferred between host catch-up conditions for a current command. The actual amount of data transferred between host catch-up conditions is compared against the host transfer goal, and the buffer utilization ratios are adjusted when the actual amount of transferred data does not exceed the transfer goal. The host transfer goal is established by a number of operational characteristics, including drive transfer speed, host transfer speed, and track switch locations.

Abstract: A method, which may be embodied upon a computer readable medium and executed by a processor, for dynamically adjusting buffer utilization ratios for a hard disk drive system. The method establishes and dynamically adjusts a host transfer goal, which targets the amount of data transferred between host catch-up conditions for a current command. The actual amount of data transferred between host catch-up conditions is compared against the host transfer goal, and the buffer utilization ratios are adjusted when the actual amount of transferred data does not exceed the transfer goal. The host transfer goal is established by a number of operational characteristics, including drive transfer speed, host transfer speed, and track switch locations.

Abstract: A method, which may be embodied upon a computer readable medium and executed by a processor, for dynamically adjusting engine startup parameters for a hard disk drive system. The method includes determining if a drive catch-up condition or a host catch-up condition has occurred and adjusting at least one of a read pad and a write pad if a drive catch-up condition is determined. The method further calculating a pad parameter and an optimal delay parameter if a host catch-up condition is determined. Thereafter, the method includes adjusting the optimal delay parameter with the pad parameter if a host catch-up condition is determined.