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Ext3 and RAID: silent data killers?

Ext3 and RAID: silent data killers?

Posted Sep 1, 2009 0:52 UTC (Tue) by drag (subscriber, #31333)
In reply to: Ext3 and RAID: silent data killers? by me@jasonclinton.com
Parent article: Ext3 and RAID: silent data killers?

Maybe. I don't think so. At least not for SD.

Remember that SD stands for 'Secure Digital' and is DRM'd. So there has to be some smarts in it to do that.


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Ext3 and RAID: silent data killers?

Posted Sep 1, 2009 6:22 UTC (Tue) by Los__D (guest, #15263) [Link]

Almost no SD support the DRM features, according to Wikipedia.

(Still doesn't change the point, though. SDs are probably designed with internal firmware)

Ext3 and RAID: silent data killers?

Posted Sep 1, 2009 9:36 UTC (Tue) by alonz (subscriber, #815) [Link]

That's not what Wikipedia says—they say few devices support CPRM. Which is more-or-less true—almost no devices in the western market use CPRM, while in Japan every single device does (it is required as part of i-Mode, which is mandated by DoCoMo).

As for firmware, the SD card interface (available for free at www.sdcard.org defines accesses in terms of 512-byte “logical” sectors, practically mandating the card to implement a flash translation layer.

Ext3 and RAID: silent data killers?

Posted Sep 1, 2009 12:49 UTC (Tue) by Los__D (guest, #15263) [Link]

Doh, of course.

I read "devices" as the SD cards themselves.


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