On 01/04/2008, Scott Long <scottl_at_samsco.org> wrote: > TCQ is a protocol specific to parallel SCSI that involves the use of > protocol messages and control signals found only on a parallel SCSI bus. > PCI RAID controllers that present a SCSI interface to the OS don't use > real TCQ to communicate between the OS and the controller. Even though > these kinds of controllers use the SCSI command protocol, they still use > a custom device-specific low-level communication protocol that handles > the transfer and queuing of commands. External RAID > controllers/enclosures do use the appropriate SCSI/SAS/FC/SATA bus > queuing mechanism, but I'm not sure if that's what you're talking about > here. Your're right, I'm not. On further thought it's logical - if RAID controllers talked plain SCSI to the OS there wouldn't be a need for specific drivers, right?Received on Mon Mar 31 2008 - 20:48:15 UTC
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