Start And Stop Times; Typical Power-Up And Power-Down Sequence; Figure 1. Typical Startup Current Profile - Seagate Medalist Pro Series Product Manual

8 Medalist Pro 6450/5040 Product Manual, February 1997
from the start of a read until the buffer segment is full or until another
command is received.
Write immediate. The drive uses the write segment to store write
commands and data. After the drive receives all of the data for the
command, it issues a write complete. Then, the drive writes the data to
the disc.
Write merging. The drive accepts contiguous write commands and
executes them as one command.

1.7 Start and stop times

Within 20 seconds after power is applied, the drive is ready. Within 15
seconds after power is removed, the drive spindle stops rotating.

1.8 Typical power-up and power-down sequence

This section describes typical power-up and power-down sequences to
assist you in evaluating the drive's performance. They are not perform-
ance specifications. A typical startup current profile is shown in Figure 1.
Startup current profiles are unique for each drive.
Current (Amps)
3.5
3.0
2.5
2.0
1.5
1.0
0
0

Figure 1. Typical startup current profile

2 4 6 8 10 12
Time (seconds)
14 16 18