Toshiba 3 Tb 3.5" Internal Hard Drive MG03SCA300 دليل المستخدم

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MK3001GRRB 2.5-inch Hard Disk Drive for Enterprise Use
with 300 Gbyte Capacity and 15,000 rpm Rotational Speed
By Toru IWAMOTO / Akihiko MAKITA / Tatsuro SASAMOTO / Keiichi YORIMITSU
Hard disk drives (HDDs) for enterprise use are primary storage devices installed in mission-critical information systems
such as servers and storage systems. In this field, HDDs must be able to provide high reliability for long-term continuous
workloads (24 hours a day, seven days a week), as well as high perform

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Featur Feature Articles e Articles 3. Hardware Technologies Figure 1 shows the drive’s internal structure. The Head with HDI Sensor 8 Terminals mechanical dimensions are compatible with SFF- 8201/8223, the industry standard for 2.5-inch HDDs. Although drives for mobile PCs are thin as 9.5 mm thick, this drive is 15 mm thick to have a highly rigid base plate and top cover for high-speed rotation. Through computer aided engineering (CAE) using finite element method (FEM) analysis, we have op

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Featur Feature Articles e Articles 1 ms VCM current Head position End of seek movement Seek status During seek Figure 3 Example of finite element method (FEM) analysis—By conducting large- scale FEM analysis of the entirety of the HDD’s mechanical components, the shapes and structures of each component were optimized, enabling high actuator performance. Figure 4 Seek waveform—Alternate seek waveforms with 1/3 of the full stroke distances; maximum acceleration exceeding 200 G during seek operat

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Featur Feature Articles e Articles (2) Data queuing function 4.2.1. Maintainability and high reliability Reduces processing time by executing the write The drive has a self-monitoring analysis reporting operations of several commands together after storing technology (SMART) function, which warns of critical write data in the cache area. HDD failures in advance, to realize a full-fledged (3) Cache function implementation of a logging function for detailed failure Temporarily holds data t