Seagate Medalist 1270 Product Manual page 19

Medalist 1270 Product Manual, August 1995
• Seeking. Seek mode is entered from Idle mode. The read/write heads
are moved to a specific location on the disc surface in preparation for
reading from or writing to the disc. Read/write electronics are powered
down but servo electronics are active. Typical power is defined as the
power average of executing random seeks with a 2-revolution (26.6
msec) dwell between Seek commands.
• Read/write. Read/write mode is entered from Idle mode. Read/write
electronics are activated and the servo is on track. The drive reads
from or writes to the disc.
1.11.1.2 Idle mode
The motor is up to speed, the servo electronics are inactive and the heads
are in the landing zone.
1.11.1.3 Standby mode
The spindle is stopped, the heads are parked in the landing zone, the
actuator is latched and some of the drive electronics are powered down.
Note. When recovering from Standby or Sleep mode, you must allow
the drive to post ready before reporting a time-out. The ST31270A
can take up to 20 seconds to post ready. If it is the master with a
slave, it can wait up to 31 seconds for the slave to complete
diagnostics before posting ready.
1.11.1.4 Sleep mode
The sleep mode implementation is the same as Standby mode.
11