Hard Drive: MICROPOLIS: 4221 (10/95) REV. B 2050MB 3.5"/SL SCSI2 FAST
4 2 2 1 ( 1 0 / 9 5 ) R E V . B MICROPOLIS
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 3.5"/SLIMLINE Cylinders 4049| | |
Capacity form/unform 2050/ MB Heads 9| | |
Seek time / track 8.9/ 1.3 ms Sector/track | | |
Controller SCSI2 SI/FAST Precompensation
Cache/Buffer 512 KB SEGMENTED Landing Zone
Data transfer rate MB/S int Bytes/Sector 512
10.000 MB/S ext SYNC
Recording method operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 50 | -40 65
Power: sleep W Humidity % 10 80 | 10 80
standby W Altitude km -0.061 3.048| -0.305 12.192
idle 10.5 W Shock g 10 | 60
seek 11.5 W Rotation RPM 7200
read/write W Acoustic dBA 37
spin-up W ECC Bit 126BIT REED SOLOMON,ON THE...
MTBF h 1000000
Warranty Month 60
Lift/Lock/Park YES Certificates
Layout
MICROPL. 4221/4210 PRODUCT MANUAL REV. B 6/95 110791
+---------------------------------------------------------+ | |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 |COMPONENT SIDE NO. 136602 SINGLE-ENDED |XX1 J1A +---------------------------------------------------------+
Jumpers
MICROPL. 4221/4210 PRODUCT MANUAL REV. B, 6/95 110791
Jumper Setting
==============
x = Factory default
Option Jumper Block
-------------------
+-- Remote LED+
+--+--+--+--+--+--+--+--+--+--+--+--+--++-+
- |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 -----+ | | | | | | | | | | +----- ID0
SSYNC --------+ | | | | | | | | +-------- ID1
MSYNC -----------+ | | | | | | +----------- ID2
Key 1 --------------+ | | | | +-------------- 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; one group is in the Option Jumper Block, and the
other in on the PCBA itself. 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 | 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 SCSI 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.
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.
Spindle Synchronization
-----------------------
MSYNC, SSYC Use i soptional.
Used as spindle synchronization reference.
The Rotational Position Locking field (MODE SELECT command, Page Code
04h) is used to specify spindle synchronization operation.
Note that SSYNC = slave sync and MSYNC = master sync
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.
Install
MICROPL. 4221/4210 PRODUCT MANUAL REV. B, 6/95 110791
Notes on installation
=====================
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.
SINGLE-ENDED 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
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
4-Pin Option Connector (Spindle Synchronization)
------------------------------------------------
Recommended mating connector: Dupont 90311-004 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 connector: Dupont 69305-002 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.
Features
MICROPL. 4221/4210 PRODUCT MANUAL REV. B, 6/95 110791
Description
-----------
This Product Description describes the Micropolis TAURUS 2 family of
high-performance, 3 1/2-inch, 1-inch high Rigid Disk Drive.
The drives 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.
DIFFERENTIAL INTERFACE IS OPTIONAL.
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 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.
Loadable Code
-------------
The drive can electronically download SCSI Firmware via the SCSI
interface.
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