23 Jun
2011
23 Jun
'11
03:44
On 06/16/2011 02:53 PM, John Andersen wrote: > On 6/15/2011 6:12 PM, LLLActive@GMX.Net wrote: > >>>> Then a HW Raid is preferable. >>> Why? This is a Linux that more or less only does RAID and nothing else >>> and the transfer speeds it reaches are really nice. >>> >>> Philipp >> *This Reply from / Antwort von / Antwoord van:* LLLActive@GMX.Net - 2011-06-16 >> - 02:49:34 +0200 >> >> Because I do not know how to successfully restore a broken software array. > > Its just as easy as restoring a hardware array. > RTFM helps. I bet you RTFM on the hardware raid, so why is it a problem for > software raid? > I've done it on a couple of occasions both with software raid 5 and software > mirroring. > > In fact, software raid is so effective, I frequently use fake raid boards and > just jumper > them to act as simple controllers, taking advantage of the multitude of ports and > killing off their internal raid controller. > +1 md-raid (pure software) is just a reliable and robust as dm-raid (fake raid). Further, the overhead for each is virtually nil and disc I/O for each are roughly equivalent to the single drive sata I/O times and throughput. If I have a fake raid chip, I'll generally use it in an install, if I don't, I'll use pure software raid. Great results with each. You just have to remember which boxes are dm boxes and which are md :) -- David C. Rankin, J.D.,P.E. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org