MicroSD

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*'''Please note: SDHC-cards test - not ''Micro''SDHC-cards''': [http://www.tomshardware.com/charts/sdhc-memory-card-charts/File-Server-Benchmark-Pattern,865.html tomshardware.com: SDHC Memory Card Charts > File Server Benchmark Pattern: File Server Benchmark Pattern] Quote: "...IOMeter 2003.05.10 (Total I/O operations per second for Queuedepth 1 - 64)...", [http://www.tomshardware.com/charts/sdhc-memory-card-charts/benchmarks,40.html All SDHC Memory Card Charts]
 
*'''Please note: SDHC-cards test - not ''Micro''SDHC-cards''': [http://www.tomshardware.com/charts/sdhc-memory-card-charts/File-Server-Benchmark-Pattern,865.html tomshardware.com: SDHC Memory Card Charts > File Server Benchmark Pattern: File Server Benchmark Pattern] Quote: "...IOMeter 2003.05.10 (Total I/O operations per second for Queuedepth 1 - 64)...", [http://www.tomshardware.com/charts/sdhc-memory-card-charts/benchmarks,40.html All SDHC Memory Card Charts]
 
*[http://www.sunhelp.org/pipermail/geeks/2008-February/061492.html 2008 (geeks) Flash wear leveling] Quote: "...We tested several file systems (ext2/3, xfs, reiserfs, FAT, ...) and finaly gave up...and developed an application speciffic log structured file system in userland..."
 
*[http://www.sunhelp.org/pipermail/geeks/2008-February/061492.html 2008 (geeks) Flash wear leveling] Quote: "...We tested several file systems (ext2/3, xfs, reiserfs, FAT, ...) and finaly gave up...and developed an application speciffic log structured file system in userland..."
*MicroSD(HC) can be tested via a USB flash adaptor and H2testw - backup your data before testing: [http://sosfakeflash.wordpress.com/2008/09/02/h2testw-14-gold-standard-in-detecting-usb-counterfeit-drives/ September 2, 2008, sosfakeflash.wordpress.com: H2testw 1.4 – Gold Standard In Detecting USB Counterfeit Drives], [http://www.bloggersbase.com/computers/h2testw-fix-usb/ bloggersbase.com: H2testw - Fix Your USB!], [http://www.heise.de/software/download/h2testw/50539 H2testw 1.4]
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*MicroSD(HC) can be tested via a USB flash adaptor and H2testw. Please backup your data before testing: [http://sosfakeflash.wordpress.com/2008/09/02/h2testw-14-gold-standard-in-detecting-usb-counterfeit-drives/ September 2, 2008, sosfakeflash.wordpress.com: H2testw 1.4 – Gold Standard In Detecting USB Counterfeit Drives], [http://www.bloggersbase.com/computers/h2testw-fix-usb/ bloggersbase.com: H2testw - Fix Your USB!], [http://www.heise.de/software/download/h2testw/50539 H2testw 1.4]
  
 
[[Category:MicroSD| ]]
 
[[Category:MicroSD| ]]

Revision as of 14:15, 17 January 2010

microSD is the format of the removable flash memory cards used in Neo 1973 and Neo Freerunner devices. Additionally the Neo Freerunner support microSDHC.

For more informations about this format see microSD on Wikipedia.

A list of supported cards can be found at Supported microSD cards.

Importent features

Importent note: Wear-leveling and ECC error correction and detection is not part of the SD card specification (version 2.0 SDHC), so please check for yourself that the SD(HC)-card support and use:

  • built-in ECC error correction and detection
  • Wear Leveling technology

If the manufacturer advertises the card with e.g. 1,000,000 hours MTBF, it might be a strong indication that the above features are used.

Other importent specifications are:

  • Low power consumption
  • Number of insertions the card endures - 10,000 seems to be good quality.
  • Total I/O operations per second

References

Personal tools

microSD is the format of the removable flash memory cards used in Neo 1973 and Neo Freerunner devices. Additionally the Neo Freerunner support microSDHC.

For more informations about this format see microSD on Wikipedia.

A list of supported cards can be found at Supported microSD cards.

Importent features

Importent note: Wear-leveling and ECC error correction and detection is not part of the SD card specification (version 2.0 SDHC), so please check for yourself that the SD(HC)-card support and use:

  • built-in ECC error correction and detection
  • Wear Leveling technology

If the manufacturer advertises the card with e.g. 1,000,000 hours MTBF, it might be a strong indication that the above features are used.

Other importent specifications are:

  • Low power consumption
  • Number of insertions the card endures - 10,000 seems to be good quality.
  • Total I/O operations per second

References