Note: If a RESET is issued before the
drive comes ready the power on
sequence will start again. In all other
cases when a RESET is issued the
present state of the motor is not altered.
WARNING: This disk drive can be
damaged by Electro-Static Discharge,
please follow recommended ESD
procedures before unpacking or
handling the drive. Ask your Dealer for
details if you need assistance.
Note: BATS is the abbreviation for
Basic Assurance Tests. Start-up
sequence
spins up the spindle motor,
uploads code, performs BATS2 (verifies
read/write hardware), resumes
“Reassign in Progress” operations, and
more. For more information on the
start-up sequence, refer to the Ultrastar
9LP & 18XP Interface Specification.
Mechanical Specifications
Weight
9.11GB Approx 1.26 pounds (0.57 Kg)
18.22GB Approx 2.04 pounds (0.93 Kg)
Dimensions
Inches
S.I.Metric
Height
9.11GB
1.00 in
25.4 mm
18.22GB
1.63 in
42.0 mm
Width
4.00 in
101.85 mm
Depth
5.75 in
147.0 mm
Vibration and Shock
Operating/Nonoperating Vibration
Due to the complexity of this subject we
recommend that users contact the
Distributor to discuss how to perform
the required measurements if they
believe this to be an area which
requires evaluation.
Operating Shock
No permanent damage will occur to the
drive when subjected to a 10 G half
sine wave shock pulse of 11
milliseconds duration. The shock pulses
are applied in each of three mutually
perpendicular axis, one axis at a time.
Nonoperating Shock
Translational Shock
No damage will occur if the unpackaged
drive is subjected to a square wave
shock less than 35 Gs applied to all
three axis for a period of 20
milliseconds, one direction at a time.
Additionally, no damage will occur if the
unpackaged 9.11GB drive is not
subjected to an 2 millisecond half sine
wave shock greater than 150Gs applied
to all three axis, one direction at a time.
Additionally, no damage will occur if the
unpackaged 18.22GB drive is not
subjected to a 2 millisecond half sine
wave shock greater than 140Gs applied
to all three axis, one direction at a time.
For the 1.0” models, no degradation in
A-weighted idle sound power will occur
if the unpackaged drive is limited to a 2
milliseconds half sine pulse shock of
150Gs or less applied in the axial
direction (z axis), or 300Gs or less
applied in radial direction (x-y plane).
For the 1.6” models, no degradation in
A-weighted idle sound power will occur
if the unpackaged drive is limited to a 2
milliseconds half sine pulse shock of
70Gs or less applied in the axial
direction (z axis), or 150Gs or less
applied in the radial direction (x-y
plane). The average A-weighted idle
sound power will increase by 0.3 Bels if
the unpackaged drive is subjected to a
2 milliseconds half sine pulse shock of
110Gs applied in the axial direction (z
axis), or 210Gs applied in the radial
direction (x-y plane).
Rotational Shock
The actuator will remain latched in the
disk landing zone if the unpackaged
drive is subjected to a 2ms half sine
pulse shock of 15,000 radians per
second squared or less applied to all
three axis, one direction at a time.
Start and Stop Times
Time
Nominal
Maximum
Nominal
Maximum
Models
9.11GB
9.11GB
18.22GB
18.22GB
Power Up
2.5
3.0
2.5
3.0
Start-up
17
45
16.5
45
Spin-up
11
30
10.5
30
Spindle Stop
15
15
15
15
All times in seconds
Bring-up Sequence Times and Stop Time
Reset Init
and Test of
Controller
Enable
SCSI Bus
Power On
Auto Start function enabled
or Start Unit command issued at this time.
File Ready to accept Read and Write commands.
Power-up
Start-up Sequence
Spin-up
Init. Servo
BATS2
Complete
Reassigns etc.
