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Drive Capacity Dave Anderson. Presentation Title Month ##, 2002 Page 2 © Seagate Confidential What hardware technology concerns you least Hard drives.

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Presentation on theme: "Drive Capacity Dave Anderson. Presentation Title Month ##, 2002 Page 2 © Seagate Confidential What hardware technology concerns you least Hard drives."— Presentation transcript:

1 Drive Capacity Dave Anderson

2 Presentation Title Month ##, 2002 Page 2 © Seagate Confidential What hardware technology concerns you least Hard drives delivering sufficient capacity Hard drive technology will be able to support huge capacities More cost effective to have multiple copies

3 Presentation Title Month ##, 2002 Page 3 © Seagate Confidential Perpendicular Products in 2006 Product Name ApplicationDisc Diameter (in.) Areal Density (Gb/In 2) Linear Density (Kbpi) Track Density (Ktpi) Drive Capacity (GB) Disc Capacity (GB) ST1.3Handheld113394014012 Barracuda 7200.10 Consumer3.5133.3939142750187.5 Momentus 5400.3 Notebook2.5130.587015016080 Cheetah 15K.5 Enterprise3.510886512530075

4 Presentation Title Month ##, 2002 Page 4 © Seagate Confidential HDD Technology Trend 3.5 inch Consumer200620092013 Drive Capacity (GB)7502,0008,000 Number of Discs433 Capacity (GB/disc)1876702,670 Product Areal Density (Gbpsi)1335001,800 Transfer Rate (Mb/sec)9302,0005,000 RPM7,200 10,000 Read Seek Time (ms)87.26.5 3.5 inch Enterprise200620092013 Drive Capacity (GB)3006002,400 Number of Discs444 Capacity (GB/disc)75150600 Product Areal Density (Gbpsi)1082501,000 Transfer Rate (Mb/sec)9752,0004,000 RPM15,000 Read Seek Time (ms)3.73.32.8 1.0 inch Handheld200620092013 Drive Capacity (GB)1230100 Number of Discs111 Capacity (GB/disc)1230100 Product Areal Density (Gbpsi)1333001,200 Transfer Rate (Mb/sec)145200600 RPM3,6004,2005,400 Read Seek Time (ms)1614.513.1

5 Object based Storage Devices (OSD) Dave Anderson

6 Presentation Title Month ##, 2002 Page 6 © Seagate Confidential Hardware technology being developed that will reduce concern OSD: being designed specifically for archive market Ultimately management is OSD’s greatest value Drive empowered to participate data management Attributes on objects guide automatic management RAID level Performance location (outer zone of HDD, striped, etc) Other, future possibilities Self-move data from one device to another Defragment files transparently Compress data Future: optimize data to application (index I-frames, Mpeg decompression, etc)

7 Presentation Title Month ##, 2002 Page 7 © Seagate Confidential Hardware technology being developed that will reduce concern File System User Component File System Storage Component Applications System Call Interface Storage Device Sector/LBA Interface Block I/O Manager OSD Interface Storage Device Block I/O Manager File System Storage Component CPU Applications File System User Component System Call Interface CPU Storage Device Block I/O Manager File System Storage Component Storage Device Block I/O Manager File System Storage Component Storage Device Block I/O Manager File System Storage Component Storage Device Block I/O Manager File System Storage Component

8 Presentation Title Month ##, 2002 Page 8 © Seagate Confidential Able to do long sectors independent of infrastructure Enables distinguishing data from unused space Defects in unused space do not affect reliability Can ignore unused space during background scan Can Self-mirror critical data OSD can replicate critical/highly used data (Can also have a performance benefit) In RAID, only rebuild actual data – not entire space OSD Improves Drive Reliability


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