On Thu, Apr 03, 2003 at 09:56:15PM -0700, Ryan McDougall wrote: > I recently bough a motherboard ( Gigabyte 7VAXP Ultra ) with a Promise > Raid 0,1 card on board.
Promise raid cards aren't really raid cards - they fake it by making the OS drivers do all the work. From everything I've read, with Linux you're better off letting the OS do software raid and ignoring the Promise drivers completely. Configure the software raid during the install - Disk Druid makes it relatively painless. > Also right now I am using linux software raid 0. Is there a real speed > improvement going from no raid, to software raid, to hardware raid? Id > appreciate any help. It really depends on what you're doing. For typical desktop work, I doubt that you'd see much of an improvement with striping, and you're doubling the chance of a total data loss - if either drive fails, both are effectively gone. I have a lot of raid experience - going back about 13 years on multiple platforms - and still hate striping. Rarely do you get what you think you're getting. I am a big fan of mirroring and other data redundancy methods (raid 0+1, 3, 5, etc.) and those have saved me time and time again. At work I even software mirror my raid-5 sets and that's saved me too - yes, you can get double-disk faults on the same raidset at the same time. My wife's system at home has a Promise raid controller and we use that to mirror the data - not stripe - but she runs Windows. I haven't seen what happens if a drive dies though (and hope I don't). -- Ed Wilts, Mounds View, MN, USA mailto:[EMAIL PROTECTED] Member #1, Red Hat Community Ambassador Program -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
