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Recording Technology Review- past, present, future. JIM CRAZE OFFERING TECHNOLOGY SOLUTIONS PO BOX 339, FULTON, MD 20759-0339 Telephone (301) 725 1427 Email Scope of this Talk. Review of data storage methods Specific experiences with recorders & tape

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recording technology review past present future

Recording Technology Review- past, present, future



PO BOX 339, FULTON, MD 20759-0339Telephone (301) 725 1427


scope of this talk
Scope of this Talk
  • Review of data storage methods
  • Specific experiences with recorders & tape
  • Applications for helical scan data recording formats
  • Future data format possibilities 3-5 years
  • Future data storage needs at CERN?
  • When to focus on future possibilities
recording methods
Recording Methods
  • Longitudinal recording- fixed heads, moving tape
  • Serial serpentine-moveable heads, moving tape, multiple passes
  • Traverse-rotating heads, moving tape,
  • Helical scan - rotating heads, moving tape,
  • Optical- moveable heads, rotating soft & hard disk media
  • Hard disk- moveable heads, rotating media
  • Solid state recording- Flash, DRAM chips
  • Holographic- not yet, but maybe next year, R&D
recording methods advantages and disadvantages
Recording Methods, Advantages and Disadvantages
  • Data rates & Capacity- key points
  • Access time- important to users
  • Archival properties & Shelf life- estimates
  • Backward compatible formats-limits
  • Format roadmaps forecast the future
  • Accuracy, key information for users
applications past present future
Applications Past, Present, Future
  • Past-acquisition, process, storage-archival
  • Present- acquisition, process, storage-archival- environmental changes- NASA satellites increasing
  • Future- web storage increasing, significant changes in volume
  • Government will be forced to turn to data storage instead of paper to keep costs down and timely services available
who depends on helical scan recording technology
Who Depends on Helical Scan Recording Technology?
  • Professional video market, ENG BetaCam, VHS consumer video, data & video back-up
  • NASA Space Shuttle digital mapping missions- Endeavor
  • Instrumentation data & some satellite down links
  • US & NATO military data & video applications

i.e., laboratory, fixed wing aircraft & helicopters

  • Airborne operating environments- high & low temperature extremes
not all helical scan formats are created equal examples
Not All Helical Scan Formats are Created Equal- examples
  • AIT data recorder-Sony
  • Camcorders-8mm- Hitachi, Panasonic, Sony, TEAC-Hi8mm, DV-6mm, others
  • D3 composite video recorder-Panasonic
  • DD3 data recorder- STK
  • DDS data recorder-HP, Sony, others
  • DIR1000 data recorder-Sony
not all helical scan formats are created equal comment
Not All Helical Scan Formats are Created Equal- comment
  • D3 composite video recorder was designed to use a co-planner MP tape cassette and was later modified to be a DD3 data recorder with a single spool cassette. This process was only partially successful in operational environments and was eventually rejected by users as not reliable.
  • Any negative experience during or after recording data tends to get a great deal of attention and data owners have a long memory for formats that cause losses in productivity. Most helical scan formats have been successful after development.
trends in data storage
Trends in data storage
  • Disaster recovery plans & funding
  • Increased emphasis for off-site storage
  • Migration of data save space & verify data
  • Higher capacities & data rates
  • Automated operations may decrease staff
  • Customer testing data formats to verify specifications
trends in data storage 2
Trends in Data Storage -2
  • Cost of storage devices decreasing 35-40% per year
  • Cost to manage storage increasing- estimates at 3-10 times acquisition costs
  • Strategy Research Corp report “The Future of the Business Network”, network administrators manage an average of 5 TB. Others estimated 15TB in 2003– can anyone really “manage” that much data?
  • Overhead costs increasing including energy -Data Center power consumption 100 watts per square foot, as compared to 10 watts per square foot for average home
  • Disaster recovery costs will increase significantly
search for future data storage products
Search for Future Data Storage Products
  • Reliability, Service, Cost, Reliability-key
  • Company plans & roadmaps- need both
  • Research + Investment = reliable products
  • Investigate, evaluate, talk to key engineers
  • New products driven by data security needs
  • Roadmap details stimulate questions
example sony data storage roadmap
Example-Sony Data Storage Roadmap
  • Copy of March 2002 Sony roadmap
  • Shows past, current products
  • Future product plans including SAIT
  • Competing products also shown
  • Emphasis on future, to 2008
future data storage products 2002 2007
Future Data Storage Products-2002-2007
  • Who wants to be first use a new product?
  • Past- government agencies paid for non-standard recorders and tape
  • Standards were important & generally required
  • Current- COTS products are required
  • Standards are still important
  • Future- COTS expected to dominate the market
  • Standards- should be more important for data interchange
future data storage products 2
Future Data Storage Products-2
  • Magnetic tape- demand for library compatible cartridges increases
  • Small format library demand increases for work stations as cartridge capacities increase
  • Metal Evaporated tapes give higher capacities
  • MP & ME tape remain cheaper alternatives
  • Hard disks-may still be more expensive
  • Optical disks- expand in capacity-slow data rate
  • Holographic recording- slow to start
future data storage products 3
Future Data Storage Products-3
  • Sony-SAIT-roadmap 2002-2007
  • LTO- roadmap 2002-2006
  • Super DLT-roadmap 2002-2007
  • Mammoth-3 late 2003
  • STK-9940-B, 2002, roadmap?
  • Technology announcements & new products & next generation products will continue each year to meet demands for increased capacity, speed, data access.
future high data rate product
Future High Data Rate Product
  • US DOD uses some COTS recorders
  • Sony 512 Mbits/ps currently available
  • Next generation 1024 Mbits/ps introduced April 2002 with 600GB cartridge- 19 mm tape width (model # DIR2000U)
  • This helical scan recorder selected by VERA astronomy program in Japan
  • More details available on Sony DIR2000U
future security applications
Future Security Applications
  • What drives the need for secure data?
  • U.S. DOD wants to mandate IT sector verify that its hardware-software products are secure, 11 April 2002.
  • US Space Command detected 41,558 computer network attacks in 2001, a 75% increase over 2000. As of April 9 2002 they have detected 10,407 incidents.
future security applications 2
Future Security Applications-2
  • Future “secure systems” from the IT sector will be more expensive
  • Future data storage products can be a part of a “secure” storage architecture
  • Increased data capacity of removable cartridges makes off site & on site storage more economical- less space
  • Hard drive “hot spare”- is not a “quick” fix but it adds a level of data protection over “time”
how to keep data readable
How to Keep Data Readable
  • Handle with care – simple procedures
  • Environmental controls, 40-45 % RH, 65-70 degrees F
  • Exercise flexible media- Mylar has a memory
  • Migration is not just for the birds
  • Test the quality of data- by lot number, before & after recording
  • Read tape specifications for storage guidance
comments and questions
Comments and Questions
  • Copies of SAIT roadmap & Power Point presentation available
  • Copies of high data rate recorder Power Point presentation available
  • Please use the sign-up information sheet and leave your business card for follow-up items of interest
  • Jim Craze,
  • Phone 301 725 1427