Hello, I''m a newbie, but I have succeeded in compiling a working 2.4.24 vanilla kernel with lustre-1.0.4 and it''s utils. Our project''s purpose is to assess the feasibility of clustering web apps for high availability (MySQL, Apache, Zope) using Linux Virtual Server or possibly Mosix (we''re still debating load balancing network requests versus distributing processes). Either way, we are after a Single System Image cluster. Our interest in Lustre is primarily as a low cost SAN replacement. We currently have about 3 TBs in EMC SAN hardware. Linux support is flaky and we are "discouraged" by the price ;-). We would like to have 10 blades running the MySQL/Apache processes (we term these "processor nodes") and then 10 additional blades with storage attached serving as OSTs (we term these "storage nodes"). Being new to distributed file systems I am wondering whether multiple processor nodes will be able to concurrently access a single database. Is this determined by how MySQL locks a file when using it (rather than a Lustre feature)? My same concerns exist for Zope. Also, if our initial plans throw any red flags please don''t hesitate to comment. Our experience is primarily with individual servers. We are still trying to wrap our heads around the Single System Image concept. Thanks in advance for the feedback! Matt Hubbard