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Native| Translation
------+-----+-----+-----
Form 3.5"/SLIMLINE Cylinders 4160| | |
Capacity form/unform 2147/ MB Heads 9| | |
Seek time / track 8.5/ 1.3 ms Sector/track | | |
Controller SCSI2 DI/WI/FAST Precompensation
Cache/Buffer 512 KB SEGMENTED Landing Zone
Data transfer rate MB/S int Bytes/Sector 512
20.000 MB/S ext SYNC
Recording method RLL operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 50 | -40 65
Power: sleep W Humidity % |
standby W Altitude km |
idle W Shock g 10 | 60
seek W Rotation RPM 7200
read/write W Acoustic dBA 36
spin-up W ECC Bit 126,REED SOLOMON
MTBF h 1000000
Warranty Month 60
Lift/Lock/Park YES Certificates FM21571,ISO9000
**********************************************************************
L A Y O U T
**********************************************************************
MICROPL. 4221 WD PRODUCT DESCRIPTION 110885 REV. A 3/95
+---------------------------------------------------------+
| |XX
+--+ |XX
| | |XX
| | |XX
| |Option |XX
| |Jumper |XX
| |Block |XX J1
| | |XX
+--1 |XX
| |XX1
| |+-+J1B
| || |
++LED RESERVED++W1 || |
++ ++++ |+-1
| |xx
| |XX
|COMPONENT SIDE NO. 136622 |XX1 J1A
+---------------------------------------------------------+
**********************************************************************
J U M P E R S
**********************************************************************
MICROPL. 4221 WD PRODUCT DESCRIPTION 110885 REV. A 3/95
Jumper Setting
==============
x = Factory default
Option Jumper Block
-------------------
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
- |27|25|23|21|19|17|15|13|11|09|07|05|03|01|
-----------+ | | | | | | | | | | | | | +-------
+ |28|26|24|22|20|18|16|14|12|10|08|06|04|02|
++-++-++-++-++-++-++-++-++-++-++-++-++-++-+
RESERVED --+ | | | | | | | | | | | | +-- Remote LED+
Key 2 NC -----+ | | | | | | | | | | +----- ID0
SSYNC --------+ | | | | | | | | +-------- ID1
MSYNC -----------+ | | | | | | +----------- ID2
Key 1 NC --------------+ | | | | +-------------- ID3
PTY -----------------+ | | +----------------- SP0
WP --------------------+ +-------------------- SP1
SCSI ID
-------
NOTE:
There are two identical groups of address jumpers on the Device
Electronics board; use either group for address selection but not
both at the same time.
Up to sixteen devices (the host and fifteen targets) can be attached
to the SCSI Bus.
ID jumpers ID0, ID1, ID2, ID3, are used to assign one of sixteen
SCSI ID bits (0-15) to the drive.
In multiple-device systems, each drive must have its own unique ID.
SCSI ID
-------
+----------+-------------------------------+
| SCSI ID | Jumper Location |
| | PINS |
| | ID3 | ID2 | ID1 | ID0 |
+----------+-------+-------+-------+-------+
| 0 | OPEN | OPEN | OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 1 | OPEN | OPEN | OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 2 | OPEN | OPEN | CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 3 | OPEN | OPEN | CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 4 | OPEN | CLOSED| OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 5 | OPEN | CLOSED| OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 6 | OPEN | CLOSED| CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 7 | OPEN | CLOSED| CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 8 | CLOSED| OPEN | OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 9 | CLOSED| OPEN | OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 10 | CLOSED| OPEN | CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 11 | CLOSED| OPEN | CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 12 | CLOSED| CLOSED| OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 13 | CLOSED| CLOSED| OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 14 | CLOSED| CLOSED| CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 15 | CLOSED| CLOSED| CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
Interface Termination
---------------------
External termination only. Suggested end-of-cable terminator:
Methode DS2050-01-68D.
SP0/SP1 Spindle Control Option
-------------------------------
SP0 CLOSED
SP1 OPEN Spindle motor starts when START UNIT command is
received.
SP0 OPEN (default)
SP1 OPEN Spindle motor starts at power-on.
SP0/SP1 Spindle Delay Option
-----------------------------
SP1 CLOSED
SP0 OPEN Spindle start-up is delayed based on SCSI ID (12
seconds per ID).
SP1 OPEN (default)
SP0 OPEN Spindle motor starts at power on.
WP Write Protect Option
------------------------
WP CLOSED Drive is write protected.
WP OPEN Drive is not write protected. (default)
PTY Bus Parity Check Option
----------------------------
PTY CLOSED Drive neither generates nor detects parity.
OPEN Drive generates parity and has parity detection
enabled. (default)
MSYNC/SSYNC Spindle Synchronization
-----------------------------------
Use is optional.
W1 +5V to BUS
-------------
W1 CLOSED (default)
Drive provides terminator power.
W1 OPEN
Host system provides TERMPWR.
Auxiliary Connector
-------------------
+----------------------- XTFALT-
| +-------------------- RESERVED
| | +----------------- SSYNC-
| | | +-------------- REMOTE LED-
| | | | +----------- GND
| | | | | +-------- FAULT-
-+-------------------+----
| 02 04 06 08 10 12 | (Rear view of the drive, board up)
| 01 03 05 07 09 11 |
+-------------------+-
| | | | | +-------- +5V
| | | | +----------- NOT USED
| | | +-------------- ID3-
| | +----------------- ID2-
| +-------------------- ID1-
+----------------------- ID0-
SCSI ID
+----------+-------------------------------+
| SCSI ID | Jumper Location |
| | PINS |
| | 7-8 | 5-6 | 3-4 | 1-2 |
+----------+-------+-------+-------+-------+
| 0 | OPEN | OPEN | OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 1 | OPEN | OPEN | OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 2 | OPEN | OPEN | CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 3 | OPEN | OPEN | CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 4 | OPEN | CLOSED| OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 5 | OPEN | CLOSED| OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 6 | OPEN | CLOSED| CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 7 | OPEN | CLOSED| CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 8 | CLOSED| OPEN | OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 9 | CLOSED| OPEN | OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 10 | CLOSED| OPEN | CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 11 | CLOSED| OPEN | CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 12 | CLOSED| CLOSED| OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 13 | CLOSED| CLOSED| OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 14 | CLOSED| CLOSED| CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 15 | CLOSED| CLOSED| CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
These connections are sampled at initialization and (if not jumpered)
are then released for use as indicated below.
+5V Pin 11
----------
5 Volts of DC power (1A maximum)
Output used to drive external LEDs.
XTFAULT- Pin 2
--------------
Output signal negated (default)
Indicates that no drive fault condition exists.
Output signal asserted
Indicates a drive fault condition.
SSYNC- Pin 6
------------
Use is optional.
Used as spindle synchronization reference.
Remote LED- Pin 8
-----------------
Open-collector output
Used to drive an external LED to indicate the drive is active.
GND Pin 10
----------
Logic ground.
FAULT- Pin 12
-------------
Input signal negated (default)
Drive is not write protected.
Input signal asserted
Drive is write protected.
A dash character (-) at the end of a signal name indicates it is
asserted at the low level (active low) and negated at the high level.
Spindle Synchronization
-----------------------
The Rotational Position Locking field (MODE SELECT command, Page Code
04h) is used to specify spindle synchronization operation.
Unsynchronized: If the drive is set to Unsynchronized (RPL = 00b), it
ignores the SLAVE SYNC signal.
Slave: If the drive is set to Slave (RPL = 01b), it does not generate
the MASTER SYNC signal or the SLAVE SYNC signal but synchronizes its
index to the SLAVE SYNC signal supplied by an external source.
Master: If the drive is set to Master (RPL = 10b), it generates the
SLAVE SYNC output signal for use directly by the slave drives.
Master Control: If the drive is set to Master Control (RPL = 11b), it
generates the MASTER SYNC signal. This output is used by the
controller to generate the SLAVE SYNC signal for the slaves.
For the Option Jumper Block, the even-numbered pins opposite SSYNC
and MSYNC are the ground-return lines for the corresponding signals.
**********************************************************************
I N S T A L L
**********************************************************************
MICROPL. 4221WD PRODUCT DESCRIPTION 110885 REV. A 3/95
Notes on installation
=====================
Recommended mounting orientation
--------------------------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
| | | | | |
| +-----+ +-----+ |
+--+ +--+
Dimensions and Mounting
-----------------------
The drive uses industry-standard mounting For 3 1/2-inch 1-inch high,
Winchester disk drives.
Recommended orientation is vertical on either side, or horizontal
with the Device Electronics board down; other mounting orientations
may be used.
No matter what mounting orientation is used, Micropolis specifies
that the maximum HDA casting temperature not exceed 60*C (140*F).
In order to achieve the HDA casting temperature specified above,
forced air flow, around the HDA and Device Electronics board, may be
required. For recommended air-flow cooling, refer to the following
table:
Air Flow | Air Temperature
---------+----------------
180 LFPM*| 25*C (77*F) * Linear Feet Per Minute
220 LFPM | 50*C (122*F)
Mounting Screws
---------------
3 per side 6-32 UNC-2B
4 on bottom 6-32 UNC-2B
Caution: The mounting screws must be selected so that they do not
penetrate the bottom mounting holes by more than 0.20 inches or the
side mounting holes by more than 0.156 inches. Screws that are too
long will short to PCBA.
Interface Electrical Characteristics
------------------------------------
Differential interface signals consists of two signal lines denoted
+SIGNAL and -SIGNAL.
A signal is defined as true when the +SIGNAL is more positive than
the -SIGNAL.
A signal is defined as false when the -SIGNAL is more positive than
the +SIGNAL.
Differential drivers and receivers allow a maximum cable length of
25 meters.
Signal transmission requires a single 68-conductor cable.
A characteristic impedance of 100 ( 10%) ohms is recommended for
unshielded flat or twisted-pair ribbon cable.
A minimum conductor size of 28 AWG should be employed to minimize
noise effects and ensure proper distribution of optional terminator
power.
A stub length of no more than 0.2 meters is allowed off the main-
line interconnection withinn any connected equipment.
a. Input Characteristics
Each of the drive's signal receivers has the following
characteristics when measured at the interface connector.
I(input current on either input) = 2.0 milliamps, max.
NOTE
These characteristics include both receivers and passive
drivers.
This requirement is met withh the input voltage varying between
-7V and +12V, with power either on or off, and with hysteresis
equaling 35 millivolts, minimum.
b. Output Characteristics
Each driven signal has the following characteristics when
measured at the interface connector.
VOL (low-level output voltage) = 1.7V max. at IOL
where IOL = 55 milliamps
VOH (high-level output voltage) = 2.7V minimum at IOH
where IOH = -55 milliamps
VOD (differential voltage) = 1.0V minimum, with common-mode
voltage ranges from -7 to +12
VOL and VOH are measured between the output terminal and the
SCSI device's logic ground reference.
c. Terminator Power (TERMPWR at Pin 17, 18, 51, and 52)
Terminator Power has the following requirements:
V(TERM) = 4.25 VDC to 5.25 VDC
1000 milliamps minimum source drive capability, with 1.0 amp
recommended current limiting (e.g., a fuse).
1.0-milliamp maximum bus loading (except for the purposes of
providing power to an internal terminator).
The drive provides keyed connectors to prevent accidental
grounding or misconnection of terminator power.
Signal Connector J1
-------------------
J1 is a 68-pin interface connector. The signals on J1 include the
16-bit SCSI bus and various control and handshaking lines.
Recommended Cable: AMP P/N 2-57013-1 or equivalent.
Mating connector: AMP P/N 786090-7 or equivalent.
J1A Power Connector
-------------------
J1A is a 4-pin connector used to supply +5V and +12V to the drive.
Recommended mating connector: AMP 1-480424-0 or equivalent
Pins: AMP 350078-4
Suggested wire size: 18 AWG (minimum) for all pins.
pin 1 +12 VDC
pin 2 +12 Volts Return
pin 3 + 5 Volts Return
pin 4 + 5 VDC
J1B Auxiliary Connector
-----------------------
Recommended mating connector: Dupont 69307-012 or equivalent
Pins: Dupont 77138-001
Suggested wire size: 26-30 AWG for all pins
2-pin Option Connector (Individual signals; e.g. LED, etc.)
-----------------------------------------------------------
Recommended mating connectors: Dupont 69305-002 or equivalent
Pins: Dupont 77138-001
Suggested wire size: 26-30 AWG for all pins
SCSI ID Connector (8-pin)
-------------------------
Recommended mating connector: Dupont 69307-008 or equivalent
Pins: Dupont 77138-001
Suggested wire size: 26 - 30 AWG for all pins
28-Pin Option Connector
-----------------------
Recommended mating connector: Dupont 69307-028 or equivalent
Pins: Dupont 77138-001
Suggested wire size: 26 - 30 AWG for all pins
4-Pin Option Connector (Spindle Synchronization)
------------------------------------------------
Recommended mating connector: Dupont 69307-004 or equivalent
Pins: Dupont 77138-001
Suggested wire size: 26 - 30 AWG for all pins
Multiple-Drive Systems
----------------------
Drive #1
+------HOST------+ +-----------------+
| +-----------+ +--+-SCSI-BUS-----+ J1 |
| |Terminators| | | +------+ J1A |
| +-----------+ | | | +-----------------+
| | | |
+----------------+ | | Drive #2
| | +-----------------+
+-------+------+ J1 |
| o------+ J1A |
| | +-----------------+
| |
| | Drive #3
| | +-----------------+
+-------+------+ J1 |
| o------+ J1A |
| | +-----------------+
| |
| | Drive #4
| | +-----------------+
External -----+-------+------+ J1 |
Terminators o------+ J1A |
---DC-VOLTAGES-----+ +-----------------+
Terminators are installed ONLY in the last physical drive in the
control chain.
Temperature Measurement
-----------------------
Micropolis specifies the maximum HDA casting temperature to be 60*C
(140*F). Not exceeding this temperature will ensure that the head-to-
media interface never exceeds its temperature limit.
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F E A T U R E S
**********************************************************************
MICROPL. 4221WD PRODUCT DESCRIPTION 110885 REV. A 3/95
Description
-----------
This Product Description describes the Micropolis model 4221WD Rigid
Disk drive. The drive is a member of the TAURUS 2 family of
high-performance, 3 1/2-inch, 1-inch high Rigid Disk Drives.
This drive provide OEMs with random-access, high-speed, data
storage and meet the needs of diverse applications environments.
The drive is compatible with the "ANSI CCS" version and the "SCSI-2"
version of the industry-standard Small Computer System Interface
(SCSI) specification.
Some Features of the Drive
--------------------------
- Positive media protection is achieved during spin down (due to a
STOP UNIT command or power off) by automatically retracting and
locking the positioner in a data-free landing zone.
- N-Segment Read-Ahead algorithm improves read performance by
allowing many accesses to be serviced from the cache buffer (512K).
- Optional, Write-Behind Caching provides dramatic improvement in
write performance by appending multiple write commands per disk
revolution.
- In-Line Defect Management (sector slipping) provides maximum
throughput.
- Data Integrity is ensured with CRC through the buffer, 126-bit
Reed-Solomon ECC on-the-fly, and automatic retries using servo and
data strobe offsets.
Media Defects
-------------
Media defects are physical characteristics of the media which result
in repetitive read errors when a functional drive is operated within
specified operating conditions.
At the time of manufacture, a media test system evaluates every
drive and identifies each media defect location. The defective
areas are identified by head address (HD), cylinder address (CYL),
and number of bytes from Index (BFI).
The list of manufacturer-found defects is stored on the drive in a
reserved, write-protected area accessible by the SCSI controller.
This list is known as the MDL (Manufacturers Defect List) or PList
(Primary Defect List). The MDL entries can be mapped out (reassigned)
automatically at format time by appropriate use of the format control
parameter bits.
Seek Time
---------
----------------------------------+--------+
Track-to-Track msec. typ. | 1.3 |
Average msec. typ. | 8.9 |
msec. max. | 21 |
Latency msec. avg. | 4.17 |
----------------------------------+--------+
Recording Media
---------------
Aluminium disks, each 95 millimeters (3 1/2 inches) in diameter, are
mounted on the spindle assembly. The recording surface on each disk
is a thin coating of magnetic material, with a carbon over-coat to
protect that surface.
Braking
-------
The heads contact an area of the disk surface which is not used for
data storage when the disk are not spinning and during start and
stop cycles. Dynamic braking is used to stop the spindle quickly.
Air Filtration System
---------------------
The drives are designed to provide contamination control within the
HDA throughout the life of the drive with zero maintenance. Air
within the HDA is continuously recirculated and filtered through a
high efficiency filter. A breather filter protects the HDA from in-
ward contamination migration during air pressure changes associated
with drive temperature or atmospheric pressure variations.
Loadable Code
-------------
The drive can electronically download SCSI Firmware via the SCSI
interface.