Hi All, I have a CentOS5.2 server using a Qlogic QLE220 HBA, connected to Quantum DX30 and M1800 libraries via a Qlogic SANbox 5600 switch. I've installed the latest (v8.02.14) drivers from Qlogic for the HBA The issue I have is I am missing 2 of the 4 SDLT drives provided by the M1800 Library. The DX30 provides 6 drives, which are listed in dmesg and assigned /dev/st0->5. I would expect the SDLT's to be st6->10 but I only see up to st7 and dmesg only lists 2 Using the QLoigic SAN Surfer software all the LUN's/devices are visible to the host. FYI, I also have an old Sun220R connected to this same switch with a qlogic card; Solaris 9 has no trouble seeing all LUNs and devices. I've "googled" for a fair while and have not see anything that helps. My FC knowledge on CentOS is limited so any help with troubleshooting this would be greatly appreciated. TIA Dan