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DDS Xpress

Digital Data Storage Solution. DDS Xpress. Long-term Goal. Legacy Telecoms switches are still operational Expected lifespan at least another 10 years IP-based replacement technology Currently being evaluated, ordered or even installed However this will take some years to complete

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DDS Xpress

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  1. Digital Data Storage Solution DDS Xpress

  2. Long-term Goal • Legacy Telecoms switches are still operational • Expected lifespan at least another 10 years • IP-based replacement technology • Currently being evaluated, ordered or even installed • However this will take some years to complete • Need to extend the lifecycle of legacy switches • But several switch components are failing • Replacement 'spare' parts are hard to find

  3. Presentation Outline • DDS Xpress Magnetic Tape Replacement • Long-term Goal • Customer Wishes • Fulfilling Customer Needs • Cost Analysis • Strengths and Advantages • Next Steps of Action

  4. Equipment Problems • Basic Switch hardware is still functional • But it relies on many moving parts • MTU (Magnetic Tape Units) • DKU (Disk Unit) • These parts are failing at an increasing rate • Expensive to repair • Difficult to obtain parts • Media is obsolete • No roadmap to replace these parts • Replacement items no longer manufactured

  5. MTU is a Key Component • The MTU provides a final backup solution • If all else fails, the system falls back to the MTU • There are no options if the MTU fails • Failure of MTU means loss of office data • MTU often has the low level software • To bring the switch back after major failure • Without this, switch may be down for some time • MTU used for storing billing (AMA) data • Loss of data = loss of revenue

  6. Customer Demands • Need to replace MTU with a modern alternative • Ideally a drop-in replacement for MTU • Minimal moving parts • Remove need for magnetic tapes • Removeable media for data transfer • Life of at least 10 years

  7. DDS Xpress Overview • Solid state data storage for legacy devices • No moving parts, uses flash media • RAID storage with error correction • 512 MB internal capacity • 512 MB external media size • Drop-in MTU replacement • NEAX 61E/M/K • Any Pertec connector • Others TBD • Small low power unit

  8. Plug and Play • DDS Xpress provides connector options • 2x50 way standard Pertec • 1x50 way NEAX 61K / SCSI • NEAX 61M supported via low-cost adaptor • 6-way standard power connector • Alarm circuit supported

  9. Physical Dimensions • Significantly smaller than existing MTUs • Secured with rack-mount brackets • Easy cabling options via standard interface connectors • Solid metal enclosure construction

  10. Media • DDS Xpress uses standard xD cards • Widely available (local camera shop!) • Low cost • Unit is supplied with two internal cards • Plus one external card for data transfer

  11. Data Reliability • Two levels of data error/loss prevention • ECC and RAID • ECC on data • Additional error correction data is written • In the event of a single bit error, ECC codes can correct the error • Resulting performance (without RAID) • Error rate of 1 bit in 10 billion (1010) for writing • Verify catches these • Average 1 million reads before error

  12. Data Reliability (RAID) • RAID • Data is simultaneously written to two cards • Data verify ensures that it was written correctly • During a read operation • data on both cards is compared • if one card has an error, the other is used • Resulting performance: • Write errors detected by automatic verify function • More than 1 million reads (of same data) before error • Will not happen in normal operation

  13. Wear Leveling • DDS Xpress incorporates advanced wear-levelling technology • Each flash sector is written only once during a pass through the entire media • This provides ideal operating conditions for the flash memory • Advanced 'journaling' filing system • As used on large database servers • Power failure does not result in data corruption • Only the last few blocks being written are lost

  14. Power Consumption • Standard NEAX 61E MTU is up to 10 Amps • While starting up / loading tape • 4 Amps normal operating • DDS Xpress uses only 100 mA • Operation on 1kWhr of power • MTU: 5 hours • DDS Xpress: 8 days

  15. Easy Menu Operation • DDS Xpress has a small colour screen • Simple menu system • Online button • Media load/unload buttons

  16. Status Display • LCD display shows current status • Reading / writing / rewinding / offline • Some operations can take up to 45 minutes • DDS Xpress shows number of MB written • For reads, shows a percentage

  17. Software Upgrade • Unit supports field-upgradable software • Using a special 'upgrade' xD card • Can be used to add custom features

  18. Documentation • Full printed manual supplied in English • Quality colour reproduction • Translation can be arranged to many languages • Describes product operation and modes • Separate installation guide for installers

  19. Support and Maintenance • Supplied with 1 year manufacturer warranty • Return to base warranty • Full replacement or repair as required • Support provided through local distributor • Servicing by 'Repair Group Ltd' •

  20. Other Features • Media copy (to/from internal media) • Allows backups and AMA data to be retrieved • Offline console allows switch reboot • Networked operation available • Through integrated ethernet port • Switchable between different Switch types • Disk emulation option • Adaptation service available • Branding available

  21. Media Copy • Copy the backup, or overwrite the backup • From external media • High speed copy in a few minutes • cf up to an hour for legacy tape copies

  22. Offline Console • NEAX Switch sometimes needs a full restart • Small 'offline console' program is loaded from tape • DDS has special support for this mode • Can store the program in a separate area • Always available • No need to locate and change tapes

  23. Networked Operation • Ethernet port 10/100 on rear • Networking software available as a software upgrade • Allows retrieval of files to a central location • Central server software supplied • Supports 100s of DSUs withautomatic upload

  24. Switch Type Selection • DDS allows selection of Switch type • Currently options for Pertec, 61K, 61M • SCSI support expected soon

  25. Disk Emulation • DSU can support emulation of hard disks • Drop in solid state replacement • Includes integrated RAID functionality • High performance • Seek time <1 ms • Data transfer rate up to 6 MB/s • SCSI base support • Can also support manufacturer's variants • Through Bluewater's adaptation service

  26. Adaptation Service • Support for esoteric interfaces / devices • Using in-built reconfigurable hardware • Access to the team that developed the DDS • Options include • Adaptor board to support specific connectors • Interface signalling changes • Reasonable cost • Adaptor board development < US$10k • Minor protocol changes < US$50k • Can be included in unit price • Low risk and guaranteed results

  27. Adaptation Service • Several steps • Probing of existing system • Creation of prototype for testing • Integration into DDS product

  28. Adaptation Example • NEAX 61K support added at NEC's request • Proprietary protocol • No documentation available • Results • Full 61K support added successfully • Project duration12 weeks • Cost US$155,000

  29. Branding Option • DDS can be branded as your OEM product • We will assist with required internal approvals • Options for: • Case colour and design • Front panel branding • Integration into other products • Manufacturing license • Full IP available under license

  30. Switch Type Selection • On-board FPGA configuration technology • Allows complete reconfiguration of connectors • Support for many switch variants in one unit • Support new options via software upgrade

  31. Example Installation • Telecom is New Zealand's largest operator • Around 1.8m lines • Over 100 switches across New Zealand • Telecom was the lead DDS customer • Purchased 180 DDS Xpress units through NEC • NEC-badged product (the NEC DSU) • Tested in NEC's Tokyo lab • Used for 'office data' backup • Installed in March 2005 • Expected to operate until 2015-17

  32. Testimonials • “Bluewater Systems...could give us one box to work with three types of exchange, within our time constraints, saving us development time and money.” • Leonard Dench, Group Manager, Carrier and Provider division at NEC NZ

  33. Strengths and AdvantagesSummary • Purpose built MTU replacement • Reliable solid state storage • Plug and Play compatibility with NEAX switches • Purchase cost similar to reconditioning an MTU

  34. Availability • Supplied through accredited distributors • Provides local support • Can operate through your chosen vendor • Small quantities available ex stock • Standard lead time 10 weeks • Shipped FOB from New Zealand

  35. Additional Specifications • More technical details follows this page

  36. Connector Specifications • Standard Pertec P1 and P2 – 50 way IDC • NEAX 61K – 50 way IDC • SCSI – 50 way IDC • Ethernet 10/100 • Control Serial • Maintenance Serial • Power

  37. Connector P1

  38. Connector P2

  39. 61K / Kennedy / CT-7500

  40. 61M Low Speed Adaptor • Adaptor pinout available on request

  41. Connector SCSI • Adaptor pinout available on request

  42. Ethernet

  43. Connector Power • 1 NC (no connection) • 2 ALMS (alarm supply) • 3 ALMM (alarm monitor) • 4 -48V • 5 GND (ground) • 6 FE (frame earth)

  44. Connector Serial

  45. xD Media • Widely available off the shelf • DDS currently required non-M-type cards • DDS is supplied with three cards • 2 internal • 1 external • Media can be purchased easily • Either with the DDS or locally • Available at local camera andcomputer stores

  46. xD Media Compatibility • DDS uses a special encoding scheme • To protect xD card data against modification or viewing on a PC • Allows access control to data • Use a central DDS to read AMA data cards • However, PC read/write can be enabled • To support emailing/download of data • Using standard USB card readers • Contact us for details

  47. Brackets • Standard 19” rack brackets available • DDS can be attached to protect against seismic activity • Rubber feet option also available

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