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Quantum Scsi & Raid Devices Driver Download Windows 10
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Layout
QUANTUM FIREBALL 640/1280S PRODUCT MANUAL 81-110036-01 8/1995
Jumpers
QUANTUM FIREBALL 640/1280S PRODUCT MANUAL 81-110036-01 8/1995
Jumper Setting
Jumper Options
--------------
The configuration of three jumpers control the drive's mode of
operation:
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- A2, A1, and A0 - SCSI Bus Device Identification
- TE - Termination Enable
- PK - Jumper Parking Position
In addition to the hardware jumpers listed above, the Quantum Fire-
ball 640/1280S hard disk drive supports software control of SCSI ID,
Parity Enable, Wait Spin as determined by Mode Page 29h. Plug-and-
play SCSI is also supported.
The factory default is for SCSI ID to be controlled by hardware
jumpers A2, A1, and A0 of JP1.
A2/A1/A0 SCSI-Bus Device Identification
----------------------------------------
Used in combination, the jumper settings across A2, A1, and A0 de-
termine the Fireball 640/1280S hard disk drive's SCSI-bus device
identification (SCSI ID). By default, Quantum configures the drive
with a SCSI ID of six; that is, with jumpers installed across the
pins labeled A2 and A1, and no jumper installed across the pins
labeled A0.
The SCSI bus supports up to eigth devices, including the host system.
A device's identification number determines its priority and must be
unique in the system.
TE SCSI Bus Termination Enable Jumper
-------------------------------------
This jumper enables SCSI bus active termination on the drive when
installed (TE=1). Only the two SCSI peripherals located at the ends
of the SCSI bus should have termination enabled. When removed (PK
position may be used to store the jumper), the termination circuit
is disabled. In the disabled mode, each individual SCSI bus line is
electrically isolated from the termination source. The method allows
easier enable and disable termination.
Install
QUANTUM FIREBALL 640/1280S PRODUCT MANUAL 81-110036-01 8/1995
Notes on Installation
Orientation
-----------
The mounting holes on the Fireball 640/1280S hard disk drive allow
the drive to be mounted in any orientation.
Mounting
--------
For mounting, #6-32 UNC screws are recommended.
CAUTION: The PCB is very close to the mounting holes. Do not exceed
the specified length (3.5 mm, side 4 mm) for the mounting screws. The
specified screw length allows full use of the mounting-hole threads,
while avoiding damaging or placing unwanted stress on the PCB. To
avoid stripping the mounting-hole threads, the maximum torque applied
to the screws must not exceed 8 inch-pounds. A maximum screw length
of 0.25 inches may be used in the side mounting locations when a
bracket of 0.040 inches minimum thickness is included.
Clearance
---------
Clearance from the drive - except mounting surfaces - to any other
surface must be 0.05 inches minimum.
Ventilation
-----------
The Fireball 640/1280S hard disk drive operates without a cooling
fan, provided the ambient air temperature does not exceed 131*F
(55*C).
Disk Caching
------------
The Fireball 640/1280S hard disk drive incorporates DisCache, a 80K
disk cache, to enhance drive performance. This integrated feature can
significantly improve system throughput. Read and write caching can
be enabled or disabled using the MODE SELECT command.
Automatic Actuator Lock
-----------------------
To ensure data integrity and prevent damage during shipment, the
drive uses a dedicated landing zone and Quantum's patented AIRLOCK.
The AIRLOCK holds the headstack in the landing zone whenever the
disks are not rotating. It consists of an air vane mounted near the
perimeter of the disk stack and a locking arm that restrains the
actuator arm assembly.
When DC power is applied to the motor and the disk stack rotates, the
rotation generates an airflow on the surface of the disk. As the flow
of air across the air vane increases with disk rotation, the locking
arm pivots away from the actuator arm, enabling the headstack to move
out of the landing. When DC power is removed from the motor, an
electric return mechanism automatically pulls the actuator into the
landing zone, where the AIRLOCK holds it in place.
Recommended header connector and strain relief:
Recommended mating connector and their part numbers:
4-pin connector (J11 section A) AMP P/N 1-480424-0 or equivalent
Loose-piece contacts AMP P/N VS 60619-4 or equivalent
Strip contacts AMP P/N VS 61117-4 or equivalent
DC Motor Assembly
-----------------
Integral with the base casting, the DC motor assembly is a fixed-
shaft, brushless DC spindle motor that drives the counter-clockwise
rotation of the disks.
Air Filtration
--------------
The Fireball hard disk drives are Winchester-type drives. The
heads fly very close to the media surface. Therefore, it is essential
that the air circulating within the drive be kept free of particles.
Quantum assembles the drive in a Class-100, purified air environment,
then seals the drive with a metal cover. When the drive is in use,
the rotation of the disks forces the air inside of the drive through
an internal filter.
Features
QUANTUM FIREBALL 640/1280S PRODUCT MANUAL 81-110036-01 8/1995
Product Overview
----------------
Quantum's Fireball 640/1280S hard disk drives are a part of a family
of high-performance, 1-inch-high, hard disk drives manufactured to
meet the highest product quality standards. Fireball hard disk drives
use nonremovable, 3 -inch hard disks and are available with a Small
Computer System Interface (SCSI-2, 3).
The Fireball 640/1280S hard disk drives feature an embedded SCSI
drive controller and use SCSI commands to optimize system
performance. Because the drive manages media defects and error
recovery internally, these operations are fully transparent to the
user.
The innovative design of Fireball 640/1280S hard disk drives
enables Quantum to produce a family of low-cost, high-reliability
drives.
Performance:
Average rotational latency of 5.56 ms
128K buffer with 80K dynamic segmentation cache. Look-ahead DisCache
feature with continues prefetch and WriteCache write-buffering
capabilities.
Read-on-arrival firmware
ECC-on-the-fly
1:1 interleave on read/write operations
SCSI-bus active termination
SCSI-bus active negation drivers
Formatted Capacity
------------------
At the factory, the Fireball 640/1280S receives a low-level
format that creates the actual tracks and sectors on the drive.
Reliability
-----------
Mean Time Between Failures (MTBF):
500,000 Power On Hours (POH), typical usage
The Quantum MTBF numbers represent Bell-Core MTBF TR-TSY-000332
predictions and represent the minimum MTBF that Quantum or a customer
would expect from the drive.
Preventive Maintenance (PM): Not required
Start/Stop: 40,000 cycles (minimum)
Component Life: 5 Years
Error Detection and Correction
------------------------------
As disk drive areal densities increase, obtaining extremely low error
rates requires a new generation of sophisticated error-correction
codes. Quantum Fireball 640/1280S series hard disk drives implement
160-bit trible burst Reed-Solomon error-correction techniques to
reduce the uncorrectable read error rate to less than one bit in 1 x
10(14) bits read.
When errors occurs, an automatic retry and a more rigorous double-
burst correction algorithm enable the correction of any sector with
two bursts of three incorrect bytes each or up to six multiple
random one-byte burst errors. In addition to these advanced error
correction capabilities, the drive's additional cross-checking code
and algorithm double checks the main ECC correction to greatly re-
duce the probability of miscorrection.
Defect Management
-----------------
The Fireball 680 and 1280S allocates one sector per cylinder as a
spare.
In the factory, the media is scanned for defects. If a sector on a
cylinder is found to be defective, the address of the sector is added
to the drive's defect list. Sectors located physically subsequent to
the defective sector are assigned logical block addresses such that a
sequential ordering of logical blocks is maintained. This inline
sparing technique is employed in an attempt to eliminate slow data
transfer that would result from a single defective sector on a
cylinder.
If more than one sector is found defective on a cylinder, the inline
sparing technique is applied only to the first sector. The remaining
defective sectors are replaced with the nearest available spare
sectors on nearby cylinders. Such an assignment of additional
replacement sectors from nearby sectors rather than having a central
pool of spare sectors is an attempt to minimize the motion of the
actuator and head that otherwise would be needed to find a replace-
ment sector. The result is minimal reduction of data throughput.
Data Transfer Rates
-------------------
Data is transferred from the disk to the read buffer at a rate up to
10.4 MB/s in bursts. Data is transferred from the read buffer to the
SCSI bus at a rate of up to 5.0 MB/sec in the asynchronous mode, or
at up to 10.0 MB/s in the synchronous mode.
Track and Cylinder Skewing
--------------------------
Track and cylinder skewing in the Fireball 640/1280S minimizes
latency time and thus increases data throughput.
Track Skewing
-------------
Track skewing reduces the latency time that results when the drive
must switch read/write heads to access sequential data. A track skew
is employed such that the next logical sector of data to be accessed
will be under the read/write head once the head switch is made and
the data is ready to be accessed. Thus, when sequential data is on
the same cylinder but on a different disk surface, a head switch is
needed but not a seek. Since the sequential head-switch time is well
defined on the Fireball 640/1280S, the sector addresses can be
optimally positioned across track boundaries to minimize the latency
time during a head switch.
Cylinder Skewing
----------------
Cylinder Skewing also is used to minimize the latency tome associated
with a single-cylinder seek. The next logical sector of data that
crosses a cylinder boundary is positioned on the drive such that
after a single-cylinder seek is performed, and when the drive is
ready to continue accessing data, the sector to be accessed is
positioned directly under the read/write head. Therefore, the
cylinder skew takes place between the last sector of data on the last
head of a cylinder and the first sector of data on the first head of
the next cylinder. Since single-cylinder seeks are well defined on
the Fireball 640/1280S, the sector addresses can be optimally
positioned across cylinder boundaries to minimize the latency time
associate with a single-cylinder seek.
Plug-and-Play SCSI
------------------
Plug-and-Play SCSI firmware simplifies disk drive installation by
allowing automatic SCSI ID configuration without the use of manual
jumper settings. This feature supports the plug-and-play SCSI
initiative developed by major computer, operating system, and
peripheral manufacturers.
Plug-and-Play SCSI incorporates a new protocol that can automatically
assign a SCSI device ID to participating devices. There are no
jumpers or switches to set; no user involvement is necessary. Of
course, Fireball drives are fully compatible with pre-plug-and-play
hosts and targets.
Plug-and-Play SCSI Masters and Slaves
-------------------------------------
A plug-and-play SCSI Master is a device that is capable of assigning
a SCSI ID. Most systems have only one Master. A plug-and-play SCSI
Slave is a device that is capable of having a SCSI ID assigned to it
by a plug-and-play Master.
Most plug-and-play SCSI devices have a default SCSI ID that they use
in non-plug-and-play systems; however, they do not use the default ID
until they have detected selection by a non-plug-and-play initiator.
Once this default ID has been used, the device is said to have
'confirmed' its default ID. Before confirmation, the plug-and-play
SCSI device delays its response to a selection for 4 ms. (This delay
permits a plug-and-play SCSI Master to scan the SCSI bus for plug-
and-play SCSI tolerant devices. Once confirmed, plug-and-play SCSI
devices act like 'normal' SCSI devices.
Plug-and-Play SCSI Tolerant Devices
-----------------------------------
A device is plug-and-play SCSI tolerant if it is compatible with the
plug-and-play protocol (most SCSI devices fall within this category).
A plug-and-play SCSI tolerant device can be detected if it:
- Enables responding to selections within 5 seconds after power on
- Enables responding to selections within 250 ms after reset
- Actually responds to a selection (by asserting BSY) within 1 ms
- Implements the hard reset alternative
Layout
QUANTUM PRODRIVE ELS 42/85/127/170S PRODUCT MANUAL 81-102826-02
Jumpers
QUANTUM PRODRIVE ELS 42/85/127/170S PRODUCT MANUAL 81-102826-02
Jumper Setting
x = Jumper set at factory
On the drive printed circuit board assembly (PCBA), there are three
pairs of jumper pins that allow you set the drive's SCSI address.
When you change a jumper setting, the new setting is in effect when
the drive is next powered on.
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Used in combination, the jumper setting accross pins A2, A1, and A0
determine the ProDrive ELS 42/85/127/170S hard disk drive's SCSI-bus
device identification (SCSI ID). By default, Quantum configures the
drive with a SCSI ID of six - that is, with jumpers installed across
the pins labeld A2 and A1 and no jumper installed across the pins
labeld A0.
SCSI ID Jumper Settings
-----------------------
The SCSI bus supports up to eight devices, including the host system.
A device's identification number determines its priority and must
unique in the system.
Note: Labels indicate the pin numbers on the connector. Pins 2 and 3
are connected together on the drive.
Install
QUANTUM PRODRIVE ELS 42/85/127/170S PRODUCT MANUAL 81-102826-02
Notes on Installation
Orientation
-----------
The mounting holes on the ProDrive ELS 42/85/127/170S hard disk drive
allow the drive to be mounted in any orientation.
Mounting
--------
For mounting, #6-32 UNC screws are recommended. To avoid stripping
the mounting-hole threads, the maximum torque applied to the screws
must not exceed 8 inch-pounds.
Terminating Resistors
---------------------
At the factory, Quantum installs two resistor networks in sockets on
the drive PCBA to terminate the SCSI bus. Only the first device -
usually the host - and the last device on a SCSI bus should contain
terminating resistors. When installing the ProDrive ELS 42/85/127/
170S hard disk drive in any other position on the SCSI bus, remove
the terminating resistors.
Clearance
---------
The printed-circuit board assembly (PCBA) is very close to the
mounting holes. Clearance from the drive to any other surface -
except mounting surfaces - must be 3.5 millimeters (0.14 inches)
minimum. The specified screw length allows full use of the mounting-
hole threads, while avoiding damaging or placing unwanted stress on
the PCBA.
Caution: Using mounting screws that are no longer than the maximum
lengths, voids the warranty on the ProDrive ELS 42/85/127/170S.
Ventilation
-----------
The ProDrive ELS 42/85/127/170S hard disk drive operates without a
cooling fan, provided the ambient air temperature does not exceed
122*F (50*C).
Cable Connector
---------------
The ProDrive ELS 42/85/127/170S has a combination DC/SCSI cable
connector. A key slot on the header prevents the incorrect installa-
tion of the header connector on the SCSI cable. To prevent the header
connector on the SCSI cable from beeing plugged in backwards, use
only a keyed header connector.
The drive's combination DC/SCSI connector part number is Dupont
90910-001,2 in 1 SMT.
DC Power Connector
4-pin connector AMP P/N 1-480424-0 or equivalent
Loose-piece contacts AMP P/N 61173-4 or equivalent
Strip contacts AMP P/N 350078-4 or equivalent
Head/Disk Assembly
------------------
The head/disk assembly (HDA) contains the mechanical subassemblies of
the drive, which are sealed under a metal cover. The HDA consists of
the disk stack assembly, rotary positioner assembly, headstack
assembly, actuator latch assembly, and base casting which includes
the DC motor assembly. Assembly of the HDA takes place in a Class-
100 clean room. These subassemblies are not adjustable or field-
repairable.
Caution: To ensure that the air in the HDA remains free of contamina-
tion, never remove or adjust its cover and seals. Tampering with the
HDA voids your warranty.
DC Motor Assembly
-----------------
Integral with the base casting, the DC motor assembly is a rotating-
shaft, brushless DC spindle motor that drives the counter-clockwise
rotation of the disks.
Disk Caching
------------
The ProDrive ELS 42/85/127/170S hard disk drive incorporates DisCache
a 32K (8K for the 42S) disk cache, to enhance drive performance. This
integrated feature can significantly improve system throughput. Read
and write cahcing can be enabled or disabled using the MODE SELECT
command.
Features
QUANTUM PRODRIVE ELS 42/85/127/170S PRODUCT MANUAL 81-102826-02
Formatted Capacity
------------------
At the factory, the ProDrive ELS 42/85/127/170S receives a low-level
format that creates the actual tracks and sectors on the drive.
Reliability
-----------
Mean Time Between Failures (MTBF):
The Quantum MTBF numbers represent Bell-Core MTBF predictions at
ambient operating conditions and represent the minimum MTBF that
Quantum or a customer would expect from the drive. Quantum's ongoing
reliability testing and field return data has historically confirmed
an actual MTBF of twice the Bell-Core prediction.
Preventive Maintenance (PM): Not required
Mean Time To Repair (MTTR): 30 minutes
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Start/Stop: 40,000 cycles (minimum)
Motor Clock
-----------
The Motor Clock provides speed control for the hall-less Spindle
Motor Driver.
Error Detection and Correction
------------------------------
As disk drive areal densities increase, obtaining extremely low error
rates requires a new generation of sophisticated error-correction
codes. Quantum ProDrive ELS 42/85/127/170S series hard disk drives
implement 112-bit single- and double-burst Reed-Solomon error-
correction techniques to reduce the uncorrectable read error rate to
less than one bit in 1 x 10(14) bits read.
When errors occurs, an automatic retry and a more rigorous double-
burst correction algorithm enable the correction of any sector with
two bursts of three incorrect bytes each or up to six multiple
random one-byte burst errors. In addition to these advanced error
correction capabilities, the drive's additional cross-checking code
and algorithm double checks the main ECC correction to greatly re-
duce the probability of miscorrection.
The drive's ECC can correct up to 48 bits of multiple random-burst
errors, provided that the incorrect bytes follow the guidelines for
correctablle double-errors. If more than two bytes in any one inter-
leave are in error, the sector cannot be corrected.
Defect Management
-----------------
The ProDrive ELS 42/85/127/170S allocates one sector per cylinder as
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sector on a cylinder is found to be defective, the address of the
sector is added to the drive's defect list. Sectors located
physically subsequent to the defective sector are assigned logical
block addresses such that a sequential ordering of logical blocks
results. This inline sparing technique is employed in an attempt to
eliminate slow data transfer that would result from a single defect-
ive sector on a cylinder.
If more than one sector is found defective on a cylinder, the inline
sparing technique is applied only to the first sector. The remaining
defective sectors are replaced with the nearest available spare
sectors on nearby cylinders. Such an assignment of additional
replacement sectors from nearby sectors rather than having a central
pool of spare sectors is an attempt to minimize the motion of the
actuator and head that otherwise would be needed to find a replace-
ment sector. The result is minimal reduction of data throughput.
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