i don't know what is the answer! sorry
head crash
i don't know what is the answer! sorry
i don't know what is the answer! sorry
HDI - Head to Disk Interference.
That's called a headcrash. Usually, the head and platters never touch, because the platters spin fast enough to generate an "air cushion" on which the head glides around.
A head crash on a hard disk platter occurs when the read/write head comes into contact with the platter's surface, typically due to a sudden jolt, shock, or mechanical failure. This contact can lead to physical damage, as the head can scrape off the magnetic material on the platter, resulting in data loss. Contaminants like dust or debris can also contribute to this failure by obstructing the head's safe operation distance from the platter. Proper handling and maintaining clean environments are crucial to prevent such incidents.
a head actuator moves a gang of read/write head arm across the surface of the platter with critical precision
When a read/write head touches the surface of a platter, it can cause a phenomenon known as a "head crash." This occurs when the head makes contact with the spinning platter, potentially leading to physical damage of the magnetic surface and loss of data. Such contact can result in scratches or other forms of damage that compromise the integrity of the hard drive, often leading to data recovery challenges. Preventive measures, like proper handling and maintenance, are crucial to avoid head crashes.
Platter(s)Read/Write Head(s)Access Arm(s)Servo
2 per platter
A head crash is a type of hard disk failure that occurs when a read/write head touches the fast spinning disk platters. It is very catastrophic - it can destroy lots of data - even the data needed to start an operating system can be destroyed.
In a hard drive, the read/write heads float on a cushion of air above the platter. This ensures that there is a tiny gap between the heads and the spinning platter, allowing the heads to read and write data without physically touching the surface of the disk.