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<blockquote data-quote="MyPVR" data-source="post: 273214" data-attributes="member: 25053"><p>[USER=46710]mdbarber[/USER]:</p><p></p><p>some facts concering falsh memory:</p><p></p><p>on a flash memory module it's not possible to modify a bit seperatly, you can only access a 'cell'. Normal modules garantie 100.000 write/erease cycles per cell. Each read/erase access on a SD or CF card is handled by a flash module internal controller. Some algorythms try to spread these accesses on the complete module. Estimations say that 100.000 write/erase cycles are equivalant to a 1.000.000 hours MTBF (mean time between failure). A normal harddisk has got a MTFB of 100.000 hours in 'normal use' and these can be mapped to a 10 years life cycle.</p><p></p><p>On the CF card is a second level of control: The file system. It should handle a dead cell in the same way as a bad block on a hard disk. A lost cell will not kill the hole card.</p><p></p><p>Time shifting is not rated as a normal use, you are right. But let's say the CF card survies 2 years, is that realy so bad? I'll give this CF2IDE a chance... let's see what will happen.</p><p></p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p></blockquote><p></p>
[QUOTE="MyPVR, post: 273214, member: 25053"] [USER=46710]mdbarber[/USER]: some facts concering falsh memory: on a flash memory module it's not possible to modify a bit seperatly, you can only access a 'cell'. Normal modules garantie 100.000 write/erease cycles per cell. Each read/erase access on a SD or CF card is handled by a flash module internal controller. Some algorythms try to spread these accesses on the complete module. Estimations say that 100.000 write/erase cycles are equivalant to a 1.000.000 hours MTBF (mean time between failure). A normal harddisk has got a MTFB of 100.000 hours in 'normal use' and these can be mapped to a 10 years life cycle. On the CF card is a second level of control: The file system. It should handle a dead cell in the same way as a bad block on a hard disk. A lost cell will not kill the hole card. Time shifting is not rated as a normal use, you are right. But let's say the CF card survies 2 years, is that realy so bad? I'll give this CF2IDE a chance... let's see what will happen. ;) [/QUOTE]
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