Installation guide

G-8 AcceleRAID Installation Guide
Standby: A SCSI disk drive is in a “standby” state if it...
Is powered on; and
Is able to operate properly; and
Was NOT defined as part of any drive group.
Dead: A SCSI disk drive is in a “dead” state if it...
Is not present; or
If it is present but not powered on; or
If it failed to operate properly and was ‘killed’ by the controller.
When the controller detects a failure on a disk, it “kills” that disk by
changing its state to “dead.” A SCSI drive in a dead state does not participate
in any I/O activity. No commands are issued to dead drives.
Rebuild: A SCSI disk drive is in a “rebuild” state...
While it is in the process of being rebuilt. During this process, data is
regenerated and written to the disk drive. This state is also referred to as
‘Write-Only’ (WRO).
SCSI Interrupt Steering Logic
This is the architecture that allows a RAID controller, such as AcceleRAID
to implement RAID on a system board-embedded SCSI bus or a set of SCSI
busses.
Segment Size
See “Cache Line Size.”
Session
Refers to the period of time between any two consecutive system shutdowns.
System shutdown may be either a power off/on, or a hardware reset.
SISL
See “SCSI Interrupt Steering Logic.”