Title :
A 128Mb ChainFeRAMTM and system designs for HDD application and enhanced HDD performance
Author :
Takashima, Daisaburo ; Nagadomi, Yasushi ; Hatsuda, Kosuke ; Watanabe, Yohji ; Fujii, Shuso
Author_Institution :
Center for Semicond. R&D, Toshiba Corp., Yokohama, Japan
Abstract :
This paper demonstrates the hard disk drive (HDD) performance improvement by nonvolatile FeRAM cache. First, the 128 Mb ChainFeRAM¿ design and power supply system design to meet HDD application are presented. Second, the concept of nonvolatile FeRAM cache and the simulated and measured HDD performance improvement are presented. The read/write bandwidth improvements to 1.12 times, 3.3 times and 1.9 times have been obtained by bench mark tests of PC Mark 05 and FD Bench v1.01, and by PC user data for 5 days, respectively. These results have been the same level of or more effective than the results of HDD rotational speed-up from 5400 rpm to 7200 rpm using DRAM cache. The write energy is reduced by 25% in PC Mark05 test.
Keywords :
DRAM chips; disc drives; hard discs; ChainFeRAM design; DRAM cache; HDD application; PC Mark05 test; enhanced HDD performance; hard disk drive; memory size 128 MByte; nonvolatile FeRAM cache; power supply system design; read-write bandwidth; time 5 day; write energy; Bandwidth; Ferroelectric films; Hard disks; Nonvolatile memory; Power supplies; Power system protection; Power system simulation; Random access memory; Read-write memory; Testing;
Conference_Titel :
Solid-State Circuits Conference, 2009. A-SSCC 2009. IEEE Asian
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-4433-5
Electronic_ISBN :
978-1-4244-4434-2
DOI :
10.1109/ASSCC.2009.5357235
