Mat Maessen wrote: > You'll get pretty close to "full" throughput with just one drive > active on the hub. Something to remember about USB though, is that > there is a lot of overhead in the data transfer, and you're never > going to get the rated transfer speed over the bus (55mbits/second for > USB2.0) for large-scale transfers. If the DVD recorder isn't fast > enough to saturate the bus, you're golden.
Thanks, Mat - I should be OK since I will probably use the only one HD at a time. That overhead with large transfers seems to be very true. I've been dumping about 50 - 70 gigs at a time onto the HD of my secondary PC, and then pushing all that onto the USB drive. It takes a few hours (2 - 3) for the upload from the PC to the drive. (Takes a lot longer to feed the DVD's into the pc.) I initially tried to dump DVD's onto two PC's Iand then consolidate everything onto one via a 1 gigabit network connection, and upload it all onto the USB drives. (the only advantage to that is that I don't have to swap the USB cable from one PC to the other.) I thought the 1 gbit Ethernet that connects the two PC's was supposed to be a lot faster than the USB drives -and for small transfers the mapped network drive seems to be fine. But the ethernet connection _really_ slowed to a crawl when I tried to pull about 60 gigs from one machine to the other - it took hours and hours. So it's better ot just copy to the PC's and swap the drive cable around. > > If you REALLY want good throughput, get a 4-port USB add-on card, and > plug each drive into its own port. Hmmmm - well, now that I think about it I could just put the existing USB devices onto the external hub and hook up the drives directly to the USP ports on the PC... The exiting stuff - printers, card readers, portable storage device - are used pretty infrequently... Duh - I should of thought of that sooner... thanks - MCC -- - - - - - - - - - - - - - - - - - - - - Mark Cassino Photography Kalamazoo, Michigan www.markcassino.com - - - - - - - - - - - - - - - - - - - - -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
