Hello, because of high disk load we plan to move from disk (raid1) to ssd. Are there recommendations for - manufacturer - file sytem - raid1 The Red Hat Storage Administration Guide says: - no raid 1 - ext4 only is this state of the art? I have searched list,centos.org 2015 - nothing found. I found in the year 2012 / 2013: https://www.centos.org/forums/viewtopic.php?t=7580 https://www.centos.org/forums/viewtopic.php?t=7175 https://www.centos.org/forums/viewtopic.php?t=3667 Shall I prefer to move to fast disks (15000 rpm)? Thanks Helmut -- Viele Grüße Helmut Drodofsky Internet XS Service GmbH Heßbrühlstraße 15 70565 Stuttgart Geschäftsführung Dr.-Ing. Roswitha Hahn-Drodofsky HRB 21091 Stuttgart USt.ID: DE190582774 Tel. 0711 781941 0 Fax: 0711 781941 79 Mail: info at internet-xs.de www.internet-xs.de