Thanks Chris for the detailed response! I couldn't understand the complex sentence about XFS and was almost convinced that XFS might offer a new way to spread across multiple disks. And in this case it's mainly me and not you. Now I understand how a md linear/concat array can be exploited with XFS! Not related directly but given that XFS has commercial support, it can be an advantage over other file systems which are built to handle lots of small files but might not have commercial support. Eliezer On 16/02/2015 19:21, Chris Murphy wrote: > So contrary to popular opinion on XFS being mainly useful for large > files, it's actually quite useful for concurrent read write workflows > of small files on a many disk linear/concat arrangement. This extends > to using raid1 + linear instead of raid10 if some redundancy is > desired.