Seagate ST3600957FC Cheetah 15K.5 SCSI Product Manual - Page 80
Drive activity LED
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10.11 Drive 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 Spun down Start Unit Powered down by removal of DC N/A power Spun up Stop Unit Spun down No command activity Spun down Write/Read Buffer Spun down SCSI Bus Reset Spun down Test Unit Ready Spun up No command activity Spun up Write/Read Spun up SCSI Bus Reset Spun up Test Unit Ready Spun up Format with Immediate option on Spun up Format without Immediate Spun up Write Same Command in progress On until spinup is complete On while processing the command Off due to absence of power On while processing the command Off On while processing the command On while processing the reset On while processing the command Off On while processing the command On while processing the reset On while processing the command On while the command is initially processed LED toggles on/off on each cylinder boundary Toggles on/off 74 Cheetah 15K.5 SCSI Product Manual, Rev. J