Solid State Drives (Third Generation) 2013

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Solid State Drives (Third Generation) 2013
- By Hemanth HR
hemanthhr@live.com

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Solid State Drives (Third Generation) 2013

  1. 1. SOLID STATE DRIVEUnder Guidance of Seminar CoordinatorMr. Harshavardhan L Mr. Yogaprakash M GAsst prof., Dept of CSE Asst prof., Dept of CSEPresented byHemanth H R(4BW07CS023)
  2. 2. Page  2 INTRODUCTION DEVELOPMENT & HISTORY THE PROBLEMS WITH TODAY’S HARD DISKS ARCHITECTURE OF SSD MEMORY CONTROLLER HOST INTERFACE COMPARISON OF SSD & HDD ADVANTAGES & DISSADVANTAGES APPLICATIONS OF SSD REFERENCECONTENTS
  3. 3. Page  3INTRODUCTIONSSD TechnologyA solid-state drive (SSD) is a data storage devicethat uses solid-state memory to store persistentdata.SSDs do not have any moving mechanicalcomponents, which distinguishes them fromtraditional magnetic disks such as HDDs or floppydisks. SSDs use NAND-based flash memory or DRAMto store data.
  4. 4. Page  4 Product Consist of eight individualmemory boards, each packed with 256KBof RAM chips. In total, the Bulk Coresystem could provide a massive 2MB Data-access times ranged from 0.75milliseconds to 2 milliseconds, It costs $9700 in 1977, which isequivalent to $36,317 today.DEVELOPMENT & HISTORY1976 - Dataram introduced the worlds first solid-state drive
  5. 5. Page  5 The STC 4305 is a significant boost in thecapacity of SSDs. Cabinet could hold up to 45MB ofdata, which it stored using charge-coupled devices. Costs around $400,000 in 1978 (about$1.5 million in todays dollars)DEVELOPMENT & HISTORY1978 - The STC 4305 drum-storage unit
  6. 6. Page  6 Magnetic bubble memory has propertiessimilar to modern flash memory in that itdoesnt lose data when you shut off itspower. The Bubdisk held 128KB of data, andcosts $895.DEVELOPMENT & HISTORY1979 - Apple II Bubble Memory
  7. 7. Page  7 Axlon was one of the company producingSSDs for personal computers. This product used volatile RAM chips thatneeded constant power to retain data. 1MB of storage. It costs $1095DEVELOPMENT & HISTORY1983 - Synetix 2202
  8. 8. Page  8 IntelsNOR flash memory chips. It can hold up to 16MB of data. It costs $5000.DEVELOPMENT & HISTORY1988 - Worlds First Flash SSD
  9. 9. Page  9 Modern flash-based SSD is designed in 3.5-inch same as hard drives used at the time. It can hold up to 16MB to 896MB and costsaround $10,000. These SSDs found in military andaeronautical applications.DEVELOPMENT & HISTORY1995 - Birth of the Modern Flash Drive
  10. 10. Page  10The problems with today’s Hard Disks?Hard Disk Drives Processors have increased in speed by ordersof magnitude over the years. But spinning hard disk drives (HDD) have not. Performance gap between how fast processorsdemand data and how quickly HDD responds. HDD speed lags behind processors because itis constrained by physical components.
  11. 11. Page  11The problems with today’s Hard Disks?Hybrid Hard Disk Drives Hybrid Hard Drives are an incrementalupgrade to the Hard Disk Drives. Hybrid hard disk drive contains large-buffer. It integrated with a cache using non-volatileFlash memory. Flash memory buffer can speed up repeatedreads from the same location. Compared to normal HDD speed of dataaccess and consequent fastercomputer boot process, decreased powerconsumption, and improved reliability.
  12. 12. Page  12ARCHITECTURE OF SSDSimple block diagram of SSD architecture
  13. 13. Page  13MEMORYFlash memory-based SSD’s Use non-volatile flash memory Do not require batteries Retain memory even during suddenpower outages. Lower cost compared to DRAM SSDs are slower than DRAM SSD
  14. 14. Page  14DRAM-based SSD’s Use volatile memory. Battery or an external AC/DC adapterrequired. If power is lost, the battery providespower while all Information is copiedfrom random access memory (RAM) toback-up storage. Ultrafast data access. Primarily to accelerate applications. Costlier compared to Flash SDD’s.MEMORY
  15. 15. Page  15 Controller is an embedded processorthat executes firmware-level software. SSD controller bridge the Flashmemory components to the SSDinput/output interfaces. System will communicates thecontroller to read data from or writedata to the flash memoryCONTROLLER
  16. 16. Page  16 Serial ATA (SATA) SAS - Serial attached SCSI (generally found on servers) PCI Express USB Parallel ATA (IDE) interface (mostly replaced by SATA)HOST INTERFACE
  17. 17. Page  17Technical Comparison of SSD & HDDSolid-state drive Hard disk driveRandom access time0.1 msRandom access time5~10 msRead latency timeVery lowRead latency timehigh100MB/s to 500MB/s 50MB/s to 100MB/s.High ReliabilitySSDs have no moving parts to failmechanically.Low ReliabilityHDDs have moving parts and aresubject to sudden failure;small and light in weight. relatively large and heavyIn 2013 SSDs were available in sizesup to 512GB,In 2013 HDDs of up to 4TB wereavailable.power consuption 2 watts 12 watts.As of 2013 NAND flash SSDs costabout Rs.31000 for 500GBAs of 2013 HDDs cost about Rs.3200for 500GB drives
  18. 18. Page  18 High performance – significantly faster than a standard HDD Faster seek time – up to 60x faster than HDD Lower power – Lesser power consumption ,cooler operation Silent operation – ideal for post production environments Lighter weight – perfect for portable devices. Ability to endure extreme shock, high altitude, vibration andextremes of temperature. Immune to magnets. SSDs are random access by nature and can perform parallelreads on multiple sections of the driveADVANTAGES OF SSD
  19. 19. Page  19 They are more expensive than traditional hard drives. They currently offer less storage space than traditional harddrives. Slower Write Speed on low-end Models(MLC based types).DISSADVANTAGES OF SSD
  20. 20. Page  20ServersDesktop computersLaptopsUltrabooksHD CamcordersSmart TvCCTV Digital Video Recorder (DVR)Set-Top BoxesGaming ConsolesSSD APPLICATIONS
  21. 21. Page  21 J. Katcher. PostMark: “A New Solid State Drives”. Technical ReportTR3022, Network Appliance, October 1997. “Evolution of the Solid-State Drive” By Benj Edwards, PCWorld A. Birrell, M. Isard, C. Thacker, and T. Wobber. “A Design for High-Performance Flash Disks”, December 2007. S. Nath and A. Kansal. FlashDB: “Dynamic Self-Tuning Database forNAND Flash”. In IPSN ’07: Proceedings of the 6th InternationalConference on Information Processing in Sensor Networks June, 2009. http://en.wikipedia.org/wiki/Solid-state_drive http://www.intel.com/pressroom/.html http://whatisasolidstatedrive.com/?p=14REFERENCE

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