Installation guide

Chapter 5. McBIOS & Terminal Configuration
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5.5.5.5 Background Task priority
The “Background Task Priority” is a relative indication of how much time the
controller devotes to a rebuild operation. The RAID subsystem allows the user
to choose the rebuild priority (Ultra Low, Low, Normal, High) to balance volume
set access and rebuild tasks appropriately.
5.5.5.6 SATA NCQ Support
The controller supports both SAS and SATA disk drives. The SATA NCQ allows
multiple commands to be outstanding within a drive at the same time. Drives
that support NCQ have an internal queue where outstanding commands can be
dynamically rescheduled or re-ordered, along with the necessary tracking
mechanisms for outstanding and completed portions of the workload. The RAID
subsystem allows the user to select the SATA NCQ support: “Enabled” or
“Disabled”.