Another thing that might be prohibitive of a production system running off a USB disk is the number of write cycles a flash memory can handle.
http://www.getusb.info/what-is-the-life-cycle-of-a-usb-flash-drive/ This means that even if you never remove the drive from the port, it can only handle 10,000 to 100,000 write cycles to a single memory location. Some locations are almost continuously written to... There are Linux distributions designed for USB flash that limits disk writes, but 64 Studio is optimised for performance. Still, a good way to be portable, but do not keep critical data on the "system" USB stick... Cheers, Quentin Ralf Mardorf wrote: > PS: > > >>> Hi Ralf, >>> >>> The instructions you found are to install Ubuntu ON a USB stick, which >>> is not so useful in my opinion, because of speed issues. >>> > > Oops I did it again ;), I should read a little bit slower ... > > You're right, especially the stick I ordered is a slow one. > > Intenso Rainbow-Line USB 2.0 Stick 8GB > Read 10,2 MB/sec > Write 5 MB/sec > > That means > > 10,2 * 1024 = 104448 > 104448 / 150 = 69,632 > > Read 70x > > 5 * 1024 = 5120 > 5120 / 150 = 34,133 > > Write 34x > > I guess good USB sticks are able to read 120x or 200x. But I guess it's > fast enough to demonstrate Non-Linux-Users a Linux without the > limitations of a Live-CD when I visit them and to have a Linux for > myself, when I'm not at home. > > I hope I didn't made a mistake, another stick, > http://www.reichelt.de/?;ACTION=3;LA=0;GROUPID=3440;ARTICLE=83429;APE=0;sid=...@lk4qwqar0aahv0qk480a912967e5ef095cdb736e6d2dcdb28, > from Maxell has the specification 72x, but without the information if > it's for write and/or read. I trusted in the information of the Intenso > stick and "my mathematics" that hopefully are correct. > > _______________________________________________ 64studio-users mailing list [email protected] http://lists.64studio.com/mailman/listinfo/64studio-users
