Updated June 18, 1996
________________________________________________________________________
Models 0663-H11, -H12, - L11, -L12 IBM Hard Disk Drive
________________________________________________________________________
http:\\www.storage.ibm.com\storage\techsup\hddtech\hddtech.htm
FEATURES
========
- 1,004 MB formatted capacity (512 & 520 bytes/sector) (models H12 and
L12)
- Industry-standard interface: ANSI/SCSI-2
- Integrated controller
- Logical block addressing
- Implied seeks
- SCSI disconnect and reconnect capability
- SCSI bus parity
- 1:1 interleave
- High performance (H12 & H11) and low power (L12 & L11) models
available
- (0,4/4) 8/9 rate encoding
- Media data transfer rate: 3 MB/S
- SCSI data transfer rate: up to 10 MB/S (synchronous)
- 256K byte dual-ported data buffer
- Read-ahead caching
- Multi-segmented data buffer
- Scatter/Gather function support
- Tagged and Untagged command queuing (selectable)
- Automatic sector reallocation (selectable)
- Error logging
- Variable logical block lengths (256-6000 bytes with exceptions)
- Down-loadable SCSI firmware
- Automatic retry and data correction in read errors
- In-line alternative sector assignment for high performance
- Sector reassignment without reformat
- Predictive Failure Analysis
- MTBF 400,000 hours
PERFORMANCE
===========
Data transfer rate
Buffer to/ 3 MB/S (instantaneous)
from media
Host to buffer up to 5 MB/S (synchronous)
Host from buffer up to 5 MB/S (synchronous)
Rotational Speed 4316 RPM
Average latency 6.95 mS
Seek time
Read Write
Single cylinder 0.6 mS 2.5 mS
(all models)
Average (L11, L12) 10.6 mS 12.6 mS
(weighted) (H11, H12) 9.4 mS 11.4 mS
Full stroke (L11, L12) 20.0 mS 22.0 mS
(H11, H12) 18.5 mS 20.5 mS
ELECTRICAL CONNECTOR LOCATIONS
==============================
Options
Jumper SCSI Power
Block Pin 1 Pin 1
| | |
--------|----------------------------------------|------|----------
| o o o o|o o o o o o o o o o o o o o o o o o o o O | | | |
| o o o o|o o o o o o o o o o o o o o o o o o o o o | | 0 O O O |
|--------|------------------------------------------- \-----------/|
| --------- --------------- --------------- |
| |o o o o| | | | | |
| |o o o o o| | | | | |
| --------- | | | | |
| ---------- | | | | |
| | | | | | | |
| | | | | | | ------- |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| ---------- --------------- --------------- ------- |
-------------------------------------------------------------------
Electrical Connectors (view from back of Disk Drive)
JUMPER SETTINGS
The jumper block shown above is used to select the SCSI device ID, to
control the spindle motor start and to select the appropriate option
pin (B1) function. There are four ground pins, A1, A2, A3, B2. If pin
B1 is jumpered to ground, drive initiated synchronous negotiation is
disabled, but requests from the initiator will still be accepted.
Option block ground pins must only be used for selecting jumper block
functions.
Bit Option Pin Address Bit Address
0 1 2 | 0 1 2
________|____ _____________
| | | | _ |
| O O O | O----Remote = 0 | O O|O| O | = 4
| O O O O O | Start | O O|O|O O |
| | | _ |
|_____________| |_____________|
V W X Y
_____________ _____________
| _ | | _ _ |
| |O|O O O----Remote = 1 | |O|O|O| O | = 5
| |O|O O O O | Start | |O|O|O|O O |
| _ | | _ _ |
|_____________| |_____________|
_____________ _____________
| _ | | _ _ |
| O|O|O O----Remote = 2 | O|O|O| O | = 6
| O|O|O O O | Start | O|O|O|O O |
| _ | | _ _ |
|_____________| |_____________|
_____________ _____________
| _ _ | | _ _ _ |
| |O|O|O O----Remote = 3 | |O|O|O| O | = 7
| |O|O|O O O | Start | |O|O|O|O O |
| _ _ | | _ _ _ |
|_____________| |_____________|
_________________
| C1 C2 C3 D2 |
| O O O O |
| O O O O O |
| A1 A2 A3 B1 B2 |
|_________________|
Figure 1 Option Block
With the auto start jumper in place the motor spins up when power is
applied. With the auto start jumper removed the motor spins up when the
drive is issued a Start Unit command.
Note: During the power up sequence the option pin is interrogated. If
it is grounded the pin remains an input. If it is not grounded it
becomes an output, indicating Motor Active or Command Active depending
on the state of the CMDAC bit in Mode page 0.
As an input the option pin has several effects upon the SCSI function.
Please refer to the 0661 SCSI Specification for details.
MODE SELECT OPTIONS
===================
Certain 'Mode Select' parameters are alterable via the SCSI 'Mode
Select' command. This allows certain drive characteristics to be
modified to optimize performance on a particular system. Refer to
the 0663 Disk Drive SCSI Specification for detailed definition of
Mode Select parameters. Changeable parameters are:
Block Descriptor
Number of Blocks
Block length
Page 0
QPE (Qualify Post Error)
UQE (Untagged Queueing Enable)
DWD (Disable Write Disconnect)
ASDPE (Additional Save Data Pointer Enable)
CMDAC
RPFAE (Report Predictive Failure Analysis Error)
CPE (Concurrent Processing Enable)
Page 1
AWRE (Automatic Write Reallocation Enable)
ARRE (Automatic Read Reallocation Enable)
TB (Transfer Block)
RC (Read Continuous)
PER (Post Error)
DTE (Disable Transfer on Error)
DCR (Disable Correction)
Read Retry Count
Page 2
Read Buffer Full Ratio
Write Buffer Empty Ratio
Maximum Burst Size
Page 7
PER
DCR
Page 8
MF (Multiplication Factor)
RCD (Read Cache Disable)
Demand Read Retention Priority
Write Retention Priority
Disable Pre-fetch Transfer Length
Maximum Pre-fetch
Maximum Pre-fetch Ceiling
Number of Cache Segments
Page A
QErr (Queue Error Management)
DQue (Disable Queuing)
DATA ORGANIZATION
=================
Capacity
Model H12 & L12
bytes/ gross formatted logical
logical sectors/ capacity blocks/
block track (bytes) file
256 111 856,692,480 3,346,455
512 66 1,004,559,360 1,962,030
520 65 1,004,257,800 1,931,265
524 64 995,862,000 1,900,500
1024 66 1,004,559,360 981,015
2048 66 1,004,558,336 490,507
4096 66 1,004,556,288 245,253
6000 47 1,033,116,000 172,186
Model H11 & L11
bytes/ gross formatted logical
logical sectors/ capacity blocks/
block track (bytes) file
256 111 741,180,160 2,895,235
512 66 868,044,800 1,695,400
520 65 867,743,240 1,668,737
524 64 860,446,776 1,642,074
1021 66 868,044,800 847,700
2048 66 868,044,800 423,850
4096 66 868,044,800 211,925
6000 47 891,600,000 148,600
S/N Suffix
Cylinders Ck & CL CD & CB
Total cylinders 2057 2469
User cylinders 2051 2463
Disks 8 7
Tracks/cylinder
H12 & L12 15 13
H11 & L11 13 11
User bytes/sector 256 - 750
User bytes/logical block 256 - 6000
with exceptions
(increments in bytes) = 1 256 - 750
= 2 752 - 1500
= 4 1504 - 3000
= 8 3008 - 6000
Band 1 user cylinders 1366 1641
spares/cylinder
H12 & L12 30 27
H11 & L11 28 26
Band 2 user cylinders 685 822
spares/cylinder
H12 & L12 40 36
H11 & L11 28 26
Last cylinder extra spares
H12 & L12 80 72
H11 & L11 80 68
Note: Banding as defined here refers to the number of spare sectors
provided per cylinder to reallocate defective sectors. Band 2
cylinders are those nearer the inside diameter of the data surfaces.
These have additional spare sectors since the likelihood of defective
sectors is higher in this region. This feature does not affect the
instantaneous media data rate which is constant across all cylinders.
OPERATING ENVIRONMENT
=====================
The drive operates within its' performance limits when the following
environment is maintained. Product life calculations are based on the
nominal environment for a typical application.
Humidity:
Operating 8% to 90% noncondensing
Storage 5% to 95% noncondensing
Shipping 5% to 100% (applies at a packaged level)
Wet Bulb Temperature:
Operating 80 degrees F (26.7 degrees C) maximum
Shipping/Storage 85 degrees F (29.4 degrees C) maximum
Elevation:
Operating -1000 to 10,000 feet
(-304 to 3,048 meters)
Shipping/Storage -1000 to 40,000 feet
(-304 to 12,192 meters)
Temperature:
Operating ambient 41 to 131 degrees F (5 to 55 degrees C)
Operating casting 41 to 131 degrees F (5 to 60 degrees C)
temperature
Operating casting Not to exceed 3.6 degrees F (2 degrees C)
temperature delta (see note below)
Shipping -40 to 149 degrees F (-40 to 65 degrees C)
Storage 34 to 149 degrees F (1.1 to 65 degree C)
Temperature Gradient
Operating 18 degrees F (10 degrees C) per hour
Shipping/Storage below condensation
These temperature limits are extremely important and must not be
exceeded at the worst case drive and system operating conditions with
the drive randomly seeking, reading, and writing.
Note: Measured between top and bottom of disk enclosure. See Figure 3
on back page for location of measurement points.
COOLING
This drive does require airflow in order to fulfill its' reliability
performance.
Please refer to Environmental section of the 0663 Disk Drive product
specification for full details of the maximum allowable temperatures
and measurement points.
A summary of the measurements is shown if Figure 3.
Integration into using System
- The drive's mounting frame is electrically isolated from the drive's
disk enclosure.
NOTE: THE DISK ENCLOSURE IS NOT AT GROUND POTENTIAL.
Any user mounting scheme must not result in the disk enclosure being
shorted to ground. Drive malfunction will result if this occurs.
COMPATIBILITY
- Testing should be carried out to ensure that the drive is fully
compatible with the using system.
System BIOS, Operating system, Device drivers and interface card BIOS/
characteristics can effect the ability to attach the drive to the
system. All need to be verified jointly as compatible with the drive.
The drive should be verified in the mode it will be attached to the
system.
It cannot be assumed that a drive which attaches as an additional SCSI
device on a system providing only additional data storage will have no
problems when attached as the only/boot drive.
SCSI ADAPTERS
- The following SCSI Adapters have been operated with the 0663 drives
on Typical ISA and E15A platforms under MS-DOS and worked in these
environments with no observed problems.
- ISA Bus Adapters -
ADAPTEC AHA 1542BS6
INFOSYS C5630B
WESTERN DIGITAL WD7000-ASC
DATA TECHNOLOGY CORP DTC3180
DATA TECHNOLOGY CORP DTC3280A
DATA TECHNOLOGY CORP DTC3150
FUTURE DOMAIN TMC 850M
FUTURE DOMAIN TMC 860M
FUTURE DOMAIN TMC 885M
TENTIME TNT-6000
Note: The option pin jumper on the drive must be grounded when
attaching to TMCXXX M cards.
- EISA Bus Adapters -
ADAPTEC AHA 1740
DATA TECHNOLOGY CORP DTC3290
- The Adaptec AHA1542B SCSI controller is not compatible with the
0663 drives.
Adaptec provides an upgrade kit comprising new BIOS and Microcode PROMS
to allow conversion of existing AHA1542B cards to the AHA1542BS6
version.
KNOWN INTEGRATION SOLUTIONS
- The drive initiates negotiation for synchronous data transfer rate
during the initialization sequence. This may cause problems which
prevent attachment to some systems/SCSI controller cards. Jumpering
the option pin to ground on the jumper block prevents the drive from
sending the synchronous negotiation message. However, other changes
are also made to the drive's behavior ref error reporting and sense
information returned. These are detailed in the Disk Drive SCSI
specification.
Platform(s) DECDECStation 3100
DECVAXStation 3100
DECMicroVax 3100
Operating System(s) VMS V5.4.2
VMS V5.5
VMS V5.6
Note: Attachment to earlier versions of the VMS operating systems is
not possible.
Configuration Required:
Alter MODE SELECT Page 1, Byte 2 to '04'
Alter MODE SELECT Page 7, Byte 2 to '04'
Platform(s) DECDECStation 3100
DECVAXStation 3100
DECMicroVax 3100
Operating System(s) Ultrix V4.1
Ultrix V4.2
Configuration Required:
Connect 'OPTION PIN' on drive jumper block to ground.
Platform DECStation 5000
Operating System(s) Ultrix V4.1
Ultrix V4.2
Configuration Required:
No modifications to the drive are required. However it is necessary
to modify the list of device types on the table of known drives
contained in the 'usr/sys/data/scsi-data,c' system file as follows:
Change first line from '/*UNKNOWN DISK*/' TO '/*IBM OEM*/'. Following
this change, the operating system kernel must be rebuilt (recompiled).
Platform SUNSpareStation
Operating System(s) Sunos V4.1.2
Sunos V4.1.3
Configuration Required:
The drive will attach with no changes but should the drive enter
degraded mode, due for instance to an interrupted format, it will be
necessary to ground the option pin on the drive jumper block before
the drive can be reformatted on the system.
Device Parameter Settings Declared to System:
The system will accept a wide range of settings provided these do not
result in the total number of data sectors declared (Data Cylinders x
Heads x Sectors per track) exceeding the number available on the drive.
Platform(s) NEXTStation, NEXTCube
Operating System(s) Proprietary (supplied with platform)
Configuration Required:
Alter MODE SELECT Page 0, Byte 2 to '40'
Alter MODE SELECT Page 0, Byte 3 to '80'
Platform HEWLETT PACKARD
HP9000-710
Operating System(s) Proprietary (Supplied with platform)
Configuration Required:
Connect 'OPTION PIN' on drive jumper block to ground.
Platform APPLESYSTEMS
Operating System(s) Proprietary (supplied with platform)
Configuration Required:
No modification to the drive are required. However, attachment to many
APPLE systems is not possible using the device drivers supplied.
There are third-party device drivers which allow attachment including
'SPOT ON' from MacPeak Research.
These overcome the incompatibility associated with the drive returning
the 'UNIT ATTENTION' condition in response to the first SCSI command
following power-up or a SCSI bus RESET. They also allow the APPLE
'Blind Write' feature to be turned off, which is necessary since this
feature is not supported by the drive and would result in SCSI Write
errors occurring.
PLEASE NOTE THAT TURNING 'BLIND WRITE' OFF WILL RESULT IN DEGRADED
SYSTEM PERFORMANCE WRITE OPERATIONS.
TROUBLE SHOOTING
- The drive reports status in response to the SCSI 'Sense' command and
this is a powerful troubleshooting tool on any drive whose failure
mode still allows it to communicate.
- If the drive is interrupted by powering down during a format
operation it will enter degraded mode. In this mode it will return
a 'Unit Attention' condition to most SCSI commands.
Issuing a 'Sense' Command immediately after issuing a 'Test Unit
Ready' Command will return sense data which indicates that the drive
is in degraded mode.
The way to recover the drive is to issue the SCSI 'Format' command
and allow the drive to format to completion.
PRODUCT VARIATIONS
==================
Model Comments
PN 0663 L12 8 disk version of L12 (1 GB) drive with low power
55F5208 (11 msec) actuator. Preferred where low power
dissipation is of more importance than high seek
performance. Production of this drive has been
phased out in favor of the functionally equivalent
7 disk version PN 55F9813. Current users of the
8 disk drive should evaluate the 7 disk version
to ensure compatibility with their application(s)
before receiving quantity shipments. New integrators
should evaluate the 7 disk version.
NB: This drive is not suitable for attachment to
'Apple' systems as it does not support the 'Blind
Write' and 'Unit Attention Disable' features used by
the majority of these systems.
PN 0663 H12 8 disk version of H12 (1 GB) drive with fast (9.8 mSec)
actuator. Preferred where high seek performance is of
more importance than low power dissipation. Production
of this drive has been phased out in favor of the
functionally equivalent 7 disk version PN 55F9819.
Current users of the 8 disk drive should evaluate
7 disk version to ensure compatibility with their
application(s) before receiving quantity shipments.
New integrators should evaluate the 7 disk version.
NB: This drive is not suitable for attachment to
'Apple' systems as it does not support the 'Blind
Write' and 'Unit Attention Disable' features used by
the majority of these systems.
DC POWER REQUIREMENT LIMITS
===========================
The following voltage specifications apply at the file voltage connector,
there are no special power on/off sequencing requirements.
+12 Volt Supply
+/- 5.0% (during run)
-7.0% +5.0% (during start)
+5 Volt Supply
+/- 5.0%
Power supply current (Amps) - Population mean
+5 Volt +12 Volt
Idle average 1.07 0.49
Seek peak (H11, H12) -- 1.84 (see note 1)
(L11, L12) -- 0.78
Spin-up (H11, H12) -- 3.75 (see note 2)
(L11, L12) -- 3.59
Commutation -- 0.35
Note 1: The idle average, communication and seek peak should be
added together to determine the total 12 volt peak current.
Note 2: The current at start is the total 12 volt current required
(ie the motor start current, module current and voice coil retract
current.
ELECTRICAL INTERFACE SPECIFICATIONS
===================================
The IBM OEM 0663 Disk Drive uses single-ended drivers and receivers
that permit cable lengths of up to 6 meters (19.68 feet).
Connectors
The drive has two connectors: one for power, the other for
connecting to the SCSI bus.
Power
The DC power connector is designed to mate with a MOLEX AMP
PN 1-480424-0 connector or equivalent. Pin assignments are
shown in Figure 2.
Pin # 4 3 2 1
_______________________
| _________________ |
| / \ |
| | +5V GND GND +12V| |
| | O O O O | |
| |_________________| |
|_____________________|
Figure 2 Power Connector Pin Assignments
SCSI Signal Connector
The SCSI signal connector is a 50-pin connector. Molex PN 70246
or equivalent, meeting ANSI/SCSI specifications.
SCSI Bus Terminators
The drive has no internal SCSI bus terminators. The user is
responsible for properly terminating and powering the SCSI bus in
the system.
AMP PN 88-4163-081-1, DATAMATE DM500-06-8, or equivalent
external terminal may be used.
For a single-ended cable, a 50-conductor flat cable or a 25 twisted
pair cable can be used, with a maximum length of 6.0 meters and a
stub length not to exceed 0.1 meters.
This file has a maximum internal stub length of 0.072 meters on all
SCSI signals except -RST; the -RST signal has an internal stub length
of 0.096 meters. To remain compliant with ANSI, the SCSI bus cable
must not add more than 0.028 meters additional stub length to all SCSI
signals except -RST, and no more than 0.004 meters additional stub
length to -RST.
SCSI Bus Electrical Characteristics
Note: The drive incorporates the Western Digital WD33C93B SCSI
Interface Controller and conforms to the ANSI/SCSI Interface
standard.
ELECTROMAGNETIC COMPATIBILITY
=============================
The Drive meets the following EMC requirements when installed in the
user system and exercised with a random accessing routine at
maximum data rate:
- United States Federal Communications Commission (FCC) Rules and
Regulations. Part 15, Subject J-Computer Devices "Class B Limits".
- European Economic Community EEC directive #76/889 related to the
control of radio frequency interference and the Verband Deutscher
Elektrotechniker (VDE) requirements of Germany (COP).
START AND STOP TIMES
====================
Time Nominal Maximum
__________________________________________
Power Up 2.0 sec 2.4 sec
Start Unit 19.5 sec 1 min
Stop 9 sec 12.5 sec
During the start sequence diagnostics are performed and are
divided into two sections. Power-up pre motor-start diagnostics
test the static RAM (control store memory), post motor-start
diagnostics test the data buffer, upload the code, perform channel
testing and 'Reassign in Progress' operations. For more information
on diagnostics see the 0663 Disk Drive SCSI Specifications.
If a Reset is issued before the drive is ready, the power-on
sequence starts again. Otherwise, when a Reset is issued the present
state of the motor is not altered.
A timeout of one minute or more is recommended for the Start Unit
command. This allows the system to take advantage of the extended
ERP that the drive does in order to successfully start up.
Note: It is the integrators' responsibility to ensure that
equipment into which this drive is fitted meets the relevant
regulatory requirements (EMC etc).
MECHANICAL SPECIFICATIONS
=========================
This section detailed the mechanical specifications of the IBM OEM
0663 disk drive.
Weight
Approximately 2.2 pounds (1.0 kilograms)
Dimensions
U.S. S.I. Metric
_________________________________________________
Height 1.63 in 41.3 mm
Width 4.00 in 101.6 mm
Depth* 5.75 in 146.0 mm
* The connectors exceed the depth dimension by 6.37 mm
Clearances
A minimum of 2 mm clearance should be given to the top and bottom
surfaces except for a 10 mm diameter area around the bottom mounting
holes.
To assist cooling, it is recommended that a clearance of 6 mm be
provided above and below the drive.
Precautions must be taken to avoid blocking any of the vent holes
(on the side and ends of the drive).
Mounting
The drive can be mounted with any surface facing down except the front
surface (opposite end to power and SCSI connectors).
See diagram below for location of mounting holes.
The torque applied to the mounting screws must not exceed 1.0
+ or - 0.1 Newton meters. The maximum penetration of any mounting
screw must NOT exceed 3.8 mm.
------
SIDE VIEW | |
----------------------------^ -- __|
| |_| |
FRONT | | REAR
| |
| |
| O O |
-----------------------------------
O = M4 Thread
BOTTOM VIEW
---------------------------------
| O 0 |_
| |
| |
FRONT | | REAR
| |
| __|
| |__
| O O |
-----------------------------------
Note: Screws must not penetrate more than 3.8 mm.
TEMPERATURE MEASUREMENTS
========================
Temperature measurements should be made at the points shown Figure 3 to
ensure that the maximum values are not exceeded under any circumstances.
Forced air cooling may be required in order to achieve this.
RIGHT SIDE VIEW
-------------------------------------------------
| |
FRONT | Frame Notch 3--->| | | REAR
| 140 Degrees F | | |
| 60 Degrees C ------- |
| |
-------------------------------------------------
FRONT VIEW
Motor ------------------------------------- VCM
Heat Sink 1-->| | | |<-- Heat-Sink 1
140 Degrees F | | | | 140 Degrees F
60 Degrees C | | | | 60 Degrees C
|-------- --------|
| |
-------------------------------------
REAR VIEW
-------------------------------------
|:::::::::::::::::::::::::| |O O O O|
|------------------------- -------|
| ---- ---- ---- |
| | | | | | | |
| ---- ---- ---- |
--------------|----------------------
|
WD10C012
140 Degrees F
60 Degrees C
Figure 3 Temperature Measurement Points
Figure 3 defines where measurements should be made to determine
module and casting temperatures, top side and bottom side (the
difference between the two points is defined as the delta). There must
be sufficient air flow through the drive so as not to exceed the casting
and module temperature limits.
EXTERNALLY GENERATED RIPPLE
===========================
as seen at file power connector
Voltage Maximum Notes
___________________________________________
+5 VDC 100mV peak-to-peak 0-10 MHz
+12 VDC 150mC peak-to-peak 0-10 MHz
During file start up and seeking, 12 volt ripple is generated by the
file (referred to as dynamic loading). If several files have their
power daisy chained together then the power supply ripple plus other
file's dynamic loading must remain within the regulation tolerance
window of +/- 5%. A common supply with separate power leads to each
file is a more desirable method of power distribution.
The file's mounting frame is electrically isolated from the file's
disk enclosure. The disk enclosure is not at ground potential.
Therefore any user mounting scheme must not result in the disk
enclosure being shorted to ground.
To prevent external electrical noise form interfering with the
file's performance, the file's mounting frame may be electrically
isolated from the system mounting frame. If isolation is not
practical then the file's mounting frame must be within + or -
150 millivolts of the file's power supply ground. At no time should
more than 35 milliamps of current be injected into the file frame.
The frequency range that has been tested with this specification is
0 to 100 MHz.
Hot plug/unplug support
If there is a need to plug or unplug the file while the power
supply is active then the using system must assure that the ground
pin makes contact first. This prevents a possible CMOS latch-up
condition. During the hot "plug-in" event the 5 or 12 volt power
supply voltage must not go out of tolerance in the high voltage
direction. During the not "unplug" event capacitors on the file will
prevent inductive flyback voltages from increasing to the point of
damage to the file.
If the SCSI bus is connected while it has power active on any of its
lines then a power or signal glitch may occur on the bus. If any
other devices are sharing the bus than this glitch may cause them to
produce an error.
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
The drive continues to operate, at the stated performance, when
subjected to a 5 G half sine wave shock pulse of 11 milliseconds
duration.
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 either direction in each of three
mutually perpendicular axes, one axis at a time.
Non-Operating Shock
No damage will occur if the unpackaged drive is not subjected to
a square wave shock greater than a value of 35 Gs applied to all of
the three axes for a period of 20 milliseconds, one direction at a
time.
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 detailed if you need assistance.
PACKAGING: The drive must be protected against Electro-Static Discharge
especially when being handled. The safest way to avoid damage is to put
the drive in an anti-static bag before ESD wrist straps etc are removed.
Drives should only be shipped in approved containers, severe damage can
be caused to the drive if the packaging does not adequately protect
against the shock levels induced when a box is dropped. Consult the
dealer if you do not have an approved shipping container.
AMP is a trademark of AMP Incorporated.
Molex is a trademark of Molex Incorporated.
DATA MATE is a trademark of AMP Incorporated.
Western Digital is a trademark of the Western Digital Corporation.
NEXT is a trademark of NEXT Corporation.
This data sheet is not a substitute for the fall product specification,
which should be used when detailed information is required.
Product Description data represents IBM's design objectives and is
provided for comparative purposes: actual results may vary based
on a variety of factors. This product data does not constitute a
warranty. Questions regarding IBM's warranty terms or methodology
used to derive this data should be referred to your IBM OEM
representative. Data subject to change without notice.
