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Native| Translation
------+-----+-----+-----
Form 3.5"/SLIMLINE Cylinders 4050| | |
Capacity form/unform 2147/ MB Heads 7| | |
Seek time / track 8.8/ 1.1 ms Sector/track | | |
Controller SCSI2 SI/FAST Precompensation
Cache/Buffer 512 KB READ-AHEAD Landing Zone
Data transfer rate MB/S int Bytes/Sector 512
10.000 MB/S ext SYNC
Recording method PRML operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 50 | -40 65
Power: sleep W Humidity % |
standby W Altitude km |
idle 7.5 W Shock g 10 | 60
seek 8.2 W Rotation RPM 5400
read/write W Acoustic dBA 36
spin-up W ECC Bit 126BIT REED SOLOMON,ON THE...
MTBF h 650000
Warranty Month 36
Lift/Lock/Park YES Certificates ISO9000
**********************************************************************
L A Y O U T
**********************************************************************
MICROPL. 4421 PRODUCT DESCRIPTION 110961 REV. A, 2/1996 TZ0030-01-7
+---------------------------------------------------------+
| |XX
+--+ ++|XX
| | |||XX
| | |||XX
| |Option W3-Termination |||XX
| |Jumper +-+Power |||XX
| |Block Not used+++ID2 RN2||XX
| | ++++ ++|XX
+--1 RN1||XX
| |||XX
| |||XX
| |||XX
++LED ID0++ID1 |||XX
++ ++++ ++|XX1 J1
| |
| |XX
|Part No. TZ0030-01-7 |XX1 J1A
+---------------------------------------------------------+
**********************************************************************
J U M P E R S
**********************************************************************
MICROPL. 4421 PRODUCT DESCRIPTION 110961 REV. A, 2/1996 TZ0030-01-7
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|
++-++-++-++-++-++-++-++-++-++-++-++-++-++-+
NC --+ | | | | | | | | | | | | +-- Remote LED
NC -----+ | | | | | | | | | | +----- ID0
NC --------+ | | | | | | | | +-------- ID1
NC -----------+ | | | | | | +----------- ID2
NC --------------+ | | | | +-------------- RESERVED
PTY -----------------+ | | +----------------- SP0
WP --------------------+ +-------------------- SP1
Single-Ended Configuration Options
----------------------------------
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 eight devices (the host
| SCSI ID | Jumpers | and seven targets) can be
| | ID2 | ID1 | ID0 | attached to the SCSI Bus.
+----------+-------+-------+-------+
| 0 | OPEN | OPEN | OPEN | ID jumpers ID0, ID1 and ID2
| 1 | OPEN | OPEN | CLOSED| are used to assign one of
| 2 | OPEN | CLOSED| OPEN | eight SCSI ID bits (0-7) to
| 3 | OPEN | CLOSED| CLOSED| the drive.
| 4 | CLOSED| OPEN | OPEN |
| 5 | CLOSED| OPEN | CLOSED| In multiple-device systems,
| 6 | CLOSED| CLOSED| OPEN | each drive must have its own
| x 7 | CLOSED| CLOSED| CLOSED| unique ID.
+----------+-------+-------+-------+
Interface Termination
---------------------
Terminators installed at RN1 and RN2 (default)
Drive provides termination for the interface lines.
Terminators at RN1 and RN2 omitted
Drive does not provide termination for the interface lines.
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)
W1/W2/W3 Bus Termination Power Option
--------------------------------------
+-----+ +-----+ +-----+
W3 xxx | | o X W2 | o o |
| o o | | o X | | xxx W1
+-----+ +-----+ +-----+
W1 CLOSED (default)
Drive provides local terminator power.
W2 CLOSED
Host system provides local terminator power (via J1) from the
bus.
W3 CLOSED
Drive provides terminator power (via J1) to the bus.
Remote LED Option
-----------------
LED (user supplied) connected to Remote LED
Both LEDs (on Device Electronics board and remote location) are
enabled.
Remote LED not connected (default)
LED on Device Electronics board enabled.
**********************************************************************
I N S T A L L
**********************************************************************
MICROPL. 4421 PRODUCT DESCRIPTION 110961 REV. A, 2/1996 TZ0030-01-7
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
-------------------------------------
Interface control and status signals are digital (open collector TTL)
using industry-standard transmitters and receivers which provide
a terminated, single-ended system.
For active termination, the assigned signals are terminated with 110
ohms to +2.85V (nominal). For passive termination, the assigned
signals are terminated with 220 ohms to +5V (nominal) and 330 ohms to
ground. All signals use open-collector or tri-state drivers.
Single-ended drivers and receivers allow a maximum cable length of
six meters (primarily for connection within a cabinet). Signal
transmission requires a single 50-conductor (flat or twisted-pair)
cable. A characteristic impedance of 100 ( 10%) ohms is recommended.
a. Input Characteristics
Each of the drive's signal receivers has the following
characteristics when measured at the interface connector.
1) Low-level input voltage = (Signal true) 0.0 VDC to 0.8 VDC
2) High-level input voltage = (Signal false) 2.0 VDC to 5.25 VDC
3) Low-level input current = -0.4 milliamps at 0.5 VDC
4) High-level input current = 0.1 milliamps at 2.7 VDC
5) Minimum input hysteresis = 0.2 VDC
6) Maximum input capacitance = 25 pF
b. Output Characteristics
Each driven signal has the following characteristics when
measured at the interface connector.
1) Low-level input voltage = 0.0 VDC to 0.5 VDC (signal assertion)
2) High-level input voltage = 2.5 VDC to 5.25 VDC (signal negation)
3) Minimum driver output capability = 48 milliamps (sink) at 0.5VDC
c. Terminator Power (TERMPWR at Pin 26)
Terminator Power has the following requirements:
V(TERM) = 4.25 VDC to 5.25 VDC
800 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 50-pin interface connector. The signals on J1 include the
8-bit SCSI bus and various control and handshaking lines.
Recommended Cable: 3M Scotchflex 3365/50 or equivalent.
Mating connector: 3M P/N 3425-3000 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
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 (6-pin)
-------------------------
Recommended mating connector: Dupont 90311-006 or equivalent
Pins: Dupont 77138-001
Suggested wire size: 26 - 30 AWG for all pins
28-Pin Option Connector
-----------------------
Recommended mating connector: Dupont 90311-028 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
| | +--------------+--+
+-------+------+ J1 |T |
o------+ J1A +--+
---DC-VOLTAGES-----+ +-----------------+
T = TERMINATORS
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.
**********************************************************************
F E A T U R E S
**********************************************************************
MICROPL. 4421 PRODUCT DESCRIPTION 110961 REV. A, 2/1996 TZ0030-01-7
Description
-----------
This Product Description describes the Micropolis model 4421
high-performance, 3,5-inch Rigid Disk Drive.
This drive provides OEMs with random-access, high-speed, data
storage and meet the needs of diverse applications environments. The
drives are compatible with the "ANSI CCS" version and the "SCSI-2"
version of the industry-standard Small Computer System Interface
(SCSI) specification.
Media Protection
----------------
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.
Some Features of the Drive
--------------------------
- 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). MDL entries are mapped out (reassigned)
automatically by the manufacturing process to shipment.
Seek Time
---------
----------------------------------+--------+
Track-to-Track msec. typ. | 1.1 |
Average msec. typ. | 9.75 |
msec. max. | 22.5 |
Latency msec. avg. | 5.56 |
----------------------------------+--------+
Recording Media
---------------
The four aluminium disks, each 95 millimeters (3,5 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 it.
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.
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.