tag:blogger.com,1999:blog-19298483.post7703640560897554832..comments2023-08-01T13:38:49.728+02:00Comments on Insights and Rants: Flash Drive Defrag WarningDonn Edwardshttp://www.blogger.com/profile/07954994300802439618noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-19298483.post-59840898118861819152008-01-17T14:47:00.000+02:002008-01-17T14:47:00.000+02:00Hi Donn,Interesting post, as usual! I just wanted ...Hi Donn,<BR/><BR/>Interesting post, as usual! I just wanted to make a couple of points. There are actually 2 types of flash memory: NOR and NAND. NOR is like RAM, NAND mimics a block device (like HDD). You can see a description at http://en.wikipedia.org/wiki/Flash_memory. <BR/><BR/>Also, regarding the 100,000-300,000 write lifespan - that is the case for NOR flash. NAND endurance is 1,000,000 erase cycles and above (http://www.data-io.com/pdf/NAND/Samsung/NANDtechnology.pdf).<BR/><BR/>Just wanted to point out about the NAND differences.<BR/><BR/>Joe AbusamraAnonymousnoreply@blogger.com