From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@horizon.com Subject: Re: Linux: Why software RAID? Date: 25 Aug 2006 23:50:34 -0400 Message-ID: <20060826035034.13307.qmail@science.horizon.com> Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids > Hardware RAID can be (!= is) more tolerant of serious drive failures > where a single drive locks up the bus. A high-end hardware RAID card > may be designed with independent controllers so a single drive failure > cannot take other spindles down with it. The same can be accomplished > with sw RAID of course if the builder is careful to use multiple PCI > cards, etc. Sw RAID over your motherboard's onboard controllers leaves > you vulnerable. Which is exactly why I *like* SW RAID - I can, and do, have the mirrors span controllers so a whole controller can fail without taking down the system. With HW RAID cards, if your controller dies, you're SOL.