Archived posting to the Leica Users Group, 2008/08/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]This whole thread has been quite interesting, as I have considered a neater approach to external disks than the JBOD approach I use now. So, going back to basics. I understand what Raid 0, 1, 5 mean. What I would like is a Raid 1 or 5 solution with as much capacity as possible, at a reasonable price, and able to work with my iMac (in other words, no possibility for a Raid controller card, it must be able to plug into one of the FW or USB ports and be controlled by software). Does such a thing exist, or am I better off staying with JBOD? Nathan Nathan Wajsman Alicante, Spain http://www.frozenlight.eu http://www.greatpix.eu http://www.nathanfoto.com Books: http://www.blurb.com/bookstore/search?search=wajsman&x=0&y=0 PICTURE OF THE WEEK: http://www.fotocycle.dk/paws Blog: http://www.fotocycle.dk/blog On Aug 22, 2008, at 11:06 PM, George Hartzell wrote: > Gary Todoroff writes: >> Very thoughtful and informative reply, George. Would love to debate >> over a beer sometime! [...] > > I think that it wouldn't be much of a debate, at the end of the day > we're pretty much in agreement. Over the years we've all learned all > kinds of lessons about organizing our data on computers. A lot of > what I've internalized isn't really appropriate anymore (multi core > systems with fast internal buses make it more reasonable to do > software raid, terabyte drives mean that I no longer have to glue > storage together out of too-small peices, although fast & large file > size cameras have me generating more data than ever) but there are new > reasons for slicing and dicing. > > I was reacting to the idea of not putting the OS on a raid for > stability reasons, and I still think that's not an issue. Your > comment > >> [...] data only on >> the RAID, OS on the IDE (or is it SATA?) drive that runs the computer >> and will be there no matter what happens to the RAID. > > still makes it seem that you don't see the RAID devices as a source of > stability, but we can just agree to differ on that. > >> I also like the >> performance advantage that puts the OS overhead on one disk, while >> the data read/writes are the only function of the RAID. > > One of the nice things about putting everything on the mirror is that > it gives the OS a chance to interleave and nearly-optimally schedule > IO requests onto both of the drives, you get 2x read speeds while > reading in LightRoom for the first time, then 2x read speeds while > reading in your images, then if necessary app and image reading in > parallel. > > But anyway, it's been a fun discssion, > > g. > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information