10.11Drive activity LED
The following table provides drive activity LED status.
Table 25: Drive activity LED status
Spindle status | Command status | LED status |
|
|
|
Spinning up with DC power applied | N/A | On until spinup is complete |
|
|
|
Spun down | Start Unit | On while processing the command |
|
|
|
Powered down by removal of DC | N/A | Off due to absence of power |
power |
|
|
Spun up | Stop Unit | On while processing the command |
|
|
|
Spun down | No command activity | Off |
|
|
|
Spun down | Write/Read Buffer | On while processing the command |
|
|
|
Spun down | SCSI Bus Reset | On while processing the reset |
|
|
|
Spun down | Test Unit Ready | On while processing the command |
|
|
|
Spun up | No command activity | Off |
|
|
|
Spun up | Write/Read | On while processing the command |
|
|
|
Spun up | SCSI Bus Reset | On while processing the reset |
|
|
|
Spun up | Test Unit Ready | On while processing the command |
|
|
|
Spun up | Format with Immediate option on | On while the command is initially processed |
|
|
|
Spun up | Format without Immediate | LED toggles on/off on each cylinder boundary |
|
|
|
Spun up | Write Same Command in prog- | Toggles on/off |
| ress |
|
74 | Cheetah 15K.5 SCSI Product Manual, Rev. J |