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How to avoid damaging SD card for large writes?

Question asked by xuanjie.wang on Jan 29, 2016
Latest reply on Feb 1, 2016 by xuanjie.wang
I'm doing a project,needing to write the data at 400hz frequency ,that mean I have to write 1024 Byte to the card within 2.5ms ,and I must  ensure that data are written to the card even accident occur ,such as power outages,so I use f_sync after f_write every cycle,to save the data to card ,but  f_sync cost about 1.6ms ,it is too long ,is any people encountered such a problem,giving me some advices about this,i would appreciate that(sorry for my bad english)

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