Professor Messer's Free 220-70x CompTIA A+ Training Course | Professor Messer - CompTIA A+, CompTIA Network+, Certification Training. Partition Types. HDD from inside: Tracks and Zones. How hard it can be? The goal of this article is to show how modern hard drives can read and write data. From this article you would know about zones, tracks, sectors, servo system, variable density and some over stuff. Warning! The following article has been rated as MA and contains: Engineering languageMind violating knowledgeHDD nudity Joking apart, if you feel like you brain is going to shut down – take a break. As you know information stored on platters and it’s written by heads while platters are spinning. That’s how it would look on a platter’s surface. Black dots represent the beginning of writing with each pulse from the generator. As you can see if the frequency of writing is the same for the whole surface of the platter but the density of writing wouldn’t be the same because the further head goes toward OD the faster is linear speed of the platter in that point (even if the radial speed of the platter is constant).
And here comes a problem What would be if we virtually divide platter on two rings. HDD from inside: Main parts. The goal of this article is to show you how a modern Hard Disk Drive or HDD built. What are its main parts, how do they look and what are these parts names and abbreviations. As an example we are going to disassemble 3.5" SATA drive. To make it more fun we going to tear to pieces pretty new 1TB Seagate ST31000333AS drive. Let's take a look on our "Guinea pig". The fancy piece of green woven glass and copper with SATA and power connectors called Printed Circuit Board or PCB.
PCB holds on place and wires electronic components of HDD. The black painted aluminum case with all stuff inside called Head and Disk Assembly or HDA. Now let's remove PCB and see electronic components on the other side. The heart of PCB is the biggest chip in the middle called Micro Controller Unit or MCU. The Memory chip is DDR SDRAM memory type chip. Next chip is Voice Coil Motor controller or VCM controller. Flash chip stores part of the drive's firmware. Let's take a quick look on HDA Voice coil connected to FPC. NTFS.com NTFS File System. Data Recovery Software. KEPCIL - Hard Disk Basics - Facts And Figures !