From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Power Subject: RAID 1 using SSD and 2 HDD Date: Tue, 19 Jul 2011 11:15:22 -0700 Message-ID: <4E25C9BA.1060401@dodtsair.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Is it possible to implement a RAID 1 array using two equal size HDD and one smaller and faster SSD. The idea being that the resulting RAID would have the same size of the HDD while picking up the speed benefits of the SSD. You can do something similar today by just buying two hybrid drives and putting them in an array. By purchasing a dedicated SSD drive for that purpose you gain the ability of controlling the size of the SSD portion. I was hoping the RAID array could use the SSD more as a cache then a redundant storage. Mike Power