Hi All, I have a HP ProLiant DL 380 G4 server, running SuSE Pro 9.3, kernel version 2.6.11.4-21.10. The server has all the drive bays (6) filled with SCSI disks and has Compaq Smart Array 6i RAID controller builtin. I have the disks with SCSI ID 0 and 1 (capacity 72 GB each) with a RAID 1 (mirroring) and this volume has the following partitions / (ext3) /boot (ext3) /usr/local (ext3) swap (swap) The remaining 4 disks (2, 3, 4 and 5 - with 300 GB each) form a RAID 0 volume and has /home partition in it. Randomly the server freezes up. Network card will respond to pings, but none of the login services would work (like SSH, rsh etc.). Also the RiLO connectivity would work to the extent that I am able to login to the RiLO card remotely, but I cannot login to the OS itself. Actually I cannot type anything into the console at all. What I have invariably noticed is that the system is completely busy with the SCSI disks 0 and 1, for some reason. The disk activity is 100% in this RAID volume. I don't see anything in the logs (of course, after the manual reboot, as there is no way I can get into the system itself when the problem exists). And I have no clue how to debug this. This has happened about 5 times within the last 6 months. I have enabled a cron which collects data from top, ps, w, iostat and mpstat, but nothing strange there either. Has anyone seen this before? It would be a great help if you can share your thoughts and ideas about how to resolve this. TIA, Prakash