I currently have a RAID 5 setup for our database server. Our space is running out, so I'm looking to increase the disk space. Since I'm doing that anyway, I decided to re-evaluate our current disk array. I was told that RAID 5 isn't a good choice for databases since it's slower to write. In addition, I've also been considering setting up LVM to take quick db snapshots, after reading various links on the web (and posts to this list).
So on to the questions! First, if that's what I eventually want to do (get a new RAID server with LVM), do I need to do anything special to set up LVM on the new system? Second, what is a good RAID setup for databases? RAID 10? 0+1? Third, I have the choice of using SATA or SCSI in conjuction with the RAID drives I choose. How much of a difference is there in using SATA instead of SCSI, especially in light of whatever RAID I end up going with? Thanks for any insights, Waynn
