Chris Mauritz wrote:
I've been handed a Supermicro system that is using the Intel® H6300ESB
Serial ATA Controller (Supermicro P4SCI motherboard). When I install
CentOS5, everything seems to work OK, but it has absolutely horrid
disk performance. Upon further inspection, it seems that the SATA
disks are being treated as legacy IDE devices using PIO. Gah....
Has anyone else had this problem? I recall having similar problems
last year sometime with some Supermicro systems, but I can't seem to
remember how I fixed it. :-)
Any suggestions would be much appreciated.
Sorry to follow-up my own post. The answer (after digging through a
stack of old notes) seems to be that you must go into the bios settings
and change the SATA controller to "enhanced mode". Using "SATA" and
"IDE" both resulted in the disks being discovered as PIO IDE disks
instead of SCSI devices.
Best,
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