Hi Luke, > It is very important with the 3Ware cards to match the driver to the > firmware revision. > So, if you can get your “dd bigfile” test to write data at 50MB/s+ > with a blocksize of 8KB, you should be doing well enough. I recompiled my kernel, added the driver and: jkr@Panoramix:~$ dmesg | grep 3w 3ware 9000 Storage Controller device driver for Linux v2.26.03.019fw. scsi4 : 3ware 9000 Storage Controller 3w-9xxx: scsi4: Found a 3ware 9000 Storage Controller at 0xfd8ffc00, IRQ: 28. 3w-9xxx: scsi4: Firmware FE9X 2.08.00.005, BIOS BE9X 2.03.01.052, Ports: 8. jkr@Panoramix:~/tmp$ dd if=/dev/zero of=bigfile bs=8k count=1000000 1000000+0 records in 1000000+0 records out 8192000000 bytes transferred in 200.982055 seconds (40759858 bytes/sec) Which is an remarkable increase in speed (38.9 MB/sec vs 25.7 MB/sec). Thanks for your suggestions. -- Groeten, Joost Kraaijeveld Askesis B.V. Molukkenstraat 14 6524NB Nijmegen tel: 024-3888063 / 06-51855277 fax: 024-3608416 e-mail: J.Kraaijeveld@xxxxxxxxxx web: www.askesis.nl ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings