Table 8 Drive Ready Time - Western Digital Ultrastar DC HC310 Specifications

4.5.2 Drive Ready Time
Power on to Drive Ready
6TB
4TB

Table 8 Drive Ready Time

Drive Ready The condition in which the drive is able to perform a media access command (such as read,
write) immediately.
Power on This includes the time required for the internal self-diagnostics.
4.5.3 Operating Modes
4.5.3.1 Operating Mode Descriptions
Operating Mode Description
Spin up Period of time from 0 rpm to full rpm
Start up Period of time from power on to drive ready
Seek Seek operation mode
Write Write operation mode
Read Read operation mode
Active Drive is able to perform a media access command (such as read, write) immediately
Idle_0 Drive Ready, not performing I/O; drive may power down selected electronics to reduce power
without increasing response time
Idle_A Drive Ready, not performing I/O; drive may power down selected electronics to reduce power
without increasing response time
Idle_B Spindle rotation at 7200 RPM with heads unloaded
Idle_C/Standby_Y Spindle rotation at low RPM with heads unloaded
Standby_Z Actuator is unloaded and spindle motor is stopped. Commands can be received immediately
Sleep (SATA) Actuator is unloaded and spindle motor is stopped. Only soft reset or hard reset can change
the mode to Standby_Z
Note: Upon power down or spindle stop a head locking mechanism will secure the heads in the OD parking position.
Typical (sec)
20
20
Western Digital Hard Disk Drive OEM Specification
Max (sec)
30
30
10