Re: PE2950, RAID 0, failed disk

["Ben Holland" <user=122@nabble.blu.org>]

 Alright, I was going to say something about how RAID 0 just stripes with no 
parody, a RAID 1 mirrors, so you get a whole drive of redundancy RAID 5 is 
stripe with parody so you need 3 drives minimum. If you loose a RAID 0 you 
lost half of your data, you can't recover from it, and chances are you lost 
all of the other side as well because your file system is totally hosed 
(though could someone please verify that). RAID 0 I have never seen to be 
useful. Sorry for the lack of good news. ~Ben 

On Thu, Mar 6, 2008 at 3:45 PM, Vince Kimball <[hidden email]> wrote: 

> I believe RAID 0 has no redundancy, so a single drive failure destroys 
> the volume. 
> 
> Scott R. Ehrlich wrote: 
> > I have a Dell PowerEdge 2950 with PERC 5/i, and 6 disks.  Two disks 
> > have one logical volume via a hardware RAID 1 and consist of CentOS 5 
> > 64-bit; the remaining four comprise a logical volume via a hardware 
> > RAID 0, and is all user data. 
> > 
> > One drive on the RAID 0 went bad.   I removed it while the system was 
> > on, tried a reboot, and the system hangs at RedHat Linux... Starting 
> > 
> > I tried to boot from a Fedora 8 CD, which sees the boot drives fine, 
> > but not the RAID 0 partitions. 
> > 
> > Visiting the PERC controller setup claims the RAID 0 volume is 
> > unavailable, or something similar, though it is defined, with one of 
> > the disks labelled as missing, since I removed it from the system. 
> > 
> > How do I get the partitions on the RAID 0 setup back?   I have some of 
> > the data, but need the rest, if possible, and the remaining three 
> > disks appear physically healthy.   I'm also going to work with Dell 
> > for some answers, and I've done a lot of googling. 
> > 
> > Thanks. 
> > 
> > Scott 
> > 
> 
> 
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