Deskstar 4
Product description |
Models: DCAA-33610, 34330 |
Features |
| |
- PIO and DMA data transfer modes
- 96 KB adaptive sector buffer
- Industry standard mounting
- Advanced ECC on the fly (EOF)
- CHS and LBA addressing modes
- Power saving modes
- Robust design for EMC/RFI
- MR (magneto resistive) head technology
- No ID sector format
- S.M.A.R.T. function support
|
| Operating
environment |
| Operating
conditions |
| Temperature |
5
to 55 degrees C* |
| Relative
humidity |
8
to 90% non-condensing |
Maximum
wet bulb
temperature |
29.4
degrees C non-condensing |
Gradient
maximum
temperature |
15
degrees C/hour |
| Altitude |
-300
to 3,048 m |
| Non
operating conditions |
| Temperature |
-40
to 65 degrees C |
| Relative
humidity |
5
to 95% non-condensing |
Maximum
wet bulb
temperature |
35
degrees C non-condensing |
| Altitude |
-300
to 12,000 m |
| |
| *
The system is responsible to provide sufficient air movement to
maintain surface temperature below 60 degrees C at the center of the
top cover of the drive. |
| |
| Operating
shock |
The hard disk drive meets the following
criteria while operating in respective conditions described below.
There must be a delay between shock pulses, long enough to allow the
drive to complete all necessary error recovery procedures. |
| |
| No
errors |
5
G, 11 ms half-sine shock pulse |
| No
data loss, seek errors or permanent damage |
10
G, 11 ms half-sine shock pulse |
| No
data loss or permanent damage |
15
G, 5 ms half-sine shock pulse
30 G, 4 ms half-sine shock pulse |
| |
| Non
operating shock |
The drive withstands without damage or
degradation of performance, a 75 G half-sine wave shock pulse of 11
ms duration on six sides when heads are parked. (When power is not
applied to the unit the heads are automatically located in the
parked position). Above specification is for shocks applied in each
direction of the drives three mutually perpendicular axis, one axis
at a time. |
| |
| Operating
vibration |
Due to the complexity of this subject we
recommend that users contact support to discuss how to perform the necessary measurements
if they believe this to be an area which requires evaluation. |
| |
| DC
power requirement |
The following voltage specifications
apply at the drive power connector. Damage to the drive electronics
may result if the power supply cable is connected or disconnected
while power is being applied to the drive (no hot plug/unplug is
allowed). There is no special power on/off sequencing required. |
Input voltage |
| |
| +5 volts
supply |
5V (+/-5%
during run and spin up) *1 |
| +12 volts
supply |
12V (+10%
-8% during run and spin up) *2 |
Notes:
-
To avoid damage to the file electonics 5V, power supply
voltage spikes must not exceed 7V.
-
To avoid damages to the file electronics 12V, power supply
voltage spikes must not exceed 15V.
|
| |
|
|
|
