S P - 3 4 3 0 R AVASTOR
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 3.5"/HH Cylinders 3832| | |
Capacity form/unform 4300/ 4901 MB Heads 20| | |
Seek time / track 9.0/ 0.8 ms Sector/track | | |
Controller SCSI2 SI/FAST/SCA Precompensation
Cache/Buffer 2048 KB SEGMENTED Landing Zone
Data transfer rate 4.400 MB/S int Bytes/Sector 512
10.000 MB/S ext SYNC
Recording method RLL 1/7 operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 5 55 | -40 66
Power: sleep W Humidity % 10 80 | 5 95
standby W Altitude km -0.305 3.048| -0.305 12.192
idle 13.0 W Shock g 10 | 60
seek 15.0 W Rotation RPM 7200
read/write W Acoustic dBA 36
spin-up W ECC Bit 198BIT REED SOLOMON,ON THE...
MTBF h 800000
Warranty Month 60
Lift/Lock/Park YES Certificates CSA,UL1950,VDE
**********************************************************************
L A Y O U T
**********************************************************************
QUANTUM XP31070/32150/34300 SCA PRODUCT MANUAL 81-108333-01 1995
+---------------------------------------------------------+
| |+--+
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| ||XX|
| |+--+
+---------------------------------------------------------+
80-pin SCSI Connector (Raid)
----------------------------
+--------------------------------------------------+
| Back View |
| |
+--------------------------------------------------+
| +-----------------------------------------+ |
| | J1 |
| +-----------------------------------------+ |
+----------Combination-Connector-------------------+
+ +
+--------------------------------------------------+
| Front View (Bezel End) |
| |
| |
+--------------------------------------------------+
+--------------------------------------------------+
| |
+ +
**********************************************************************
J U M P E R S
**********************************************************************
QUANTUM XP31070/32150/34300 SCA PRODUCT MANUAL 81-108333-01 1995
Jumper Setting
==============
TERMPWR (SCA)
-------------
SCA drives do not provide TERMPWR, active termination, or write
protection.
Termination SCA
---------------
Atlas disk drives used in SCA (or Raid) systems cannot be configured
to provide bus termination. Therefore, be sure to properly terminate
the SCSI bus in which this drive is installed.
NOTE
Refer to your system or SCSI controller documentation regarding any
specific recommendations regarding drive placement on the SCSI bus
and SCSI bus termination.
SCSI ID (SCA)
-------------
Each SCSI device on the bus must have a unique SCSI ID number
assigned to it. The drive can be configured for SCSI ID numbers that
range from 0 through 15.
Configure the SCSI ID by providing the proper open or ground signal
input to the referenced pins of the drive's 80-pin SCA connector.
NOTE
Refer to your system or SCSI controller documentation for specific
recommendation about assigning SCSI ID numbers for you specific
system.
+----------+-------------------+
| SCSI ID | Jumper Location |
| | ID3| ID2| ID1| ID0|
| | P80| P40| P79| P39|
+----------+----+----+----+----+
| 0 | 0 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 | 1 |
| 2 | 0 | 0 | 1 | 0 |
| 3 | 0 | 0 | 1 | 1 |
| 4 | 0 | 1 | 0 | 0 |
| 5 | 0 | 1 | 0 | 1 |
| 6 | 0 | 1 | 1 | 0 |
| 7 | 0 | 1 | 1 | 1 |
| 8 | 1 | 0 | 0 | 0 |
| 9 | 1 | 0 | 0 | 1 |
| 10 | 1 | 0 | 1 | 0 |
| 11 | 1 | 0 | 1 | 1 |
| 12 | 1 | 1 | 0 | 0 |
| 13 | 1 | 1 | 0 | 1 |
| 14 | 1 | 1 | 1 | 0 |
| 15 | 1 | 1 | 1 | 1 |
+----------+----+----+----+----+
/----------------------79-\
|*************************80 RAID Connector
|*************************40
+----------------------39-+
0 = OPEN, CKT, +2.4Vto V +0.5V
1 = GND, -0.5V to +0.4V
Spindle Synchronization SCA
---------------------------
The drive supports synchronized spindle operation. Whether the drive
operates as master or slave is determined by the contents of the RPL
field in the Rigid Disk Geometry Page (04h) for the drive.
The time interval between spindle synchronization checks is set using
the Spindle Sync Check Interval bit of the SCSI MODE SELECT command
Special Function Control page (25h).
The drive always maintains local speed regulation when no reference
signal is applied.
When the drive operates as a master, it generates a spindle
synchronization reference signal (SPINDL_SYNC_REF L). This reference
signal is available as an output to other drives at pin 37 of the
SCA connector.
When the drive operates as a slave, it looks for a spindle
synchronization reference signal (SPINDL_SYNC_REF L) as an input from
the master drive. The slave looks for this spindle synchronization
input at pin 37 of the SCA connector.
CAUTION
Atlas series drives can be connected for synchronized spindle
operation. Models XP31070, XP32150 and XP34300 drives must not be
used for synchronized spindle operation in conjunction with drives
from different model series or unpredictable results might occur.
For example, XP31070R, XP32150R and XP34300R drives can be connected
for spindle synchronization in the same system, but they must not
include a synchronization connection to a DSP3210R drive.
NOTE
When connecting multiple drives together for spindle synchronization,
be sure to use proper cabling techniques to avoid ground loop
problems.
Spin Up Power On SCA
--------------------
Atlas drives have three Spin-Up on Power On modes:
- Option 1
Spin up occurs immediately when power is applied.
- Option 2
Drive spin up occurs after a predetermined delay following power
on. The delay is equal to a user-specified multiplier, multiplied
by one plus the numerical SCSI ID of the drive. This will give a
staggered spin-up in multiple-drive installations.
- Option 3
Drive spin up is controlled by the START STOP UNIT command.
Configure the desired spin up option by setting the state of the
RMT_START (pin 38) and DLYD_START (pin 78) inputs to the 80-pin
SCA connector. The states of these signal are set by using either
hardwired connections at the backplane or backplane logic.
+--------+------------+----------+
|Option | DLYS_START | RMT_START|
| | PIN 78 | PIN 38 |
+--------+------------+----------+
| 1 | OPEN | OPEN |
+--------+------------+----------+
| 2 | GROUND | OPEN |
+--------+------------+----------+
| 3 | OPEN | GROUND |
+--------+------------+----------+
|RESERVED| GROUND | GROUND |
+--------+------------+----------+
Activity LED SCA
----------------
The drive provides the output ACTIVITY LED OUT to drive a user-
supplied activity LED (Pin 77).
The output indicates the drive is performing a SCSI operation. To use
this output, connect the user-supplied LED cathode to the ACTIVITY
LED OUT (Pin 77) connection. The LED anode must be attached to the
proper +5 VDC supply through an appropriate current-limiting
resistor.
**********************************************************************
I N S T A L L
**********************************************************************
QUANTUM XP31070/32150/34300 PRODUCT MANUAL 81-108333-01 4/1995
Notes on installation
=====================
Drive mounting
--------------
horizontally vertically
+-----------------+ +--+ +--+ +------------------+
| | | +-----+ +-----+ | | |
| | | | | | | | |+----------------+|
+-+-----------------+-+ | | | | | | || ||
+---------------------+ | | | | | | || ||
| | | | | | || ||
| | | | | | || ||
+---------------------+ | +-----+ +-----+ | || ||
+-+-----------------+-+ +--+ +--+ || ||
| | || ||
| | || ||
+-----------------+ || ||
++----------------++
You can mount the disk drive in any position. R models mount in RAID
storage subsystems. The drive (with bezel) attaches to the system bay
and accept #6-32 screws. Screws should not exceed 0.25 inch
(6.25 millimeters) in length, otherwise damage to the PCB may result.
CAUTION
The placement of the drive in the computer system must permit
sufficient air-flow to maintain drive environment temperature within
41*CF to 131*F (+5*C to +55*C) and maintain component surface
temperatures below the maximums.
Mounting brackets may be required when installing the drive in a
5.25-inch form factor bay. We recommended using brackets supplied
by Quantum Corporation to mount the drive. Otherwise, the drive's
isolation characteristics could be compromised. A bracket kit
including four screws is available from the Quantum Corp. The part
number is 70-30695-01.
The drive base contains threaded holes on its sides and bottom to
mount the drive assembly. The holes accept #6-32 UNC screws.
Installation in a 3.5-inch Bay
------------------------------
The drive base contains threaded holes on its sides and bottom to
mount the drive. The holes accept #6-32 screws.
Installation in a 5.25-inch Bay
-------------------------------
A Bracket kit including four screws is available from the Quantum
Corp. The part number is 70-30695-01. Attach the brackets to the
drive using four #6-32 screws.
CAUTION
Screw-length must not exceed 0.25-inch (6.25 millimeters); or the
drive may be damaged.
Cables
------
Atlas drives use single-ended or differential drivers and receivers.
The user furnishes the appropriate cables and connectors to match the
drive connectors listed in the following table.
+----------------------------------------+
| |
| |
| +-----J1-SCSI----------------Power---+ |
| |+-------------------------++4-3-2-1+| |
| ||oooooooooooooooooooooooo1||O O O O|| |
| ||ooooooooooooooooooooooooo|| || |
| |+-Interface-Connector-----++--J3---+| |
+-+------------------------------------+-+
68-Pin Wide SCSI Connector and 12-Pin Auxiliary Connector
---------------------------------------------------------
+------------------------------------------------+
| |
| |
| +-----J1-SCSI----------------12-Pin---Power--+ |
| |+------------------------1++------++4-3-2-1+| |
| |||||||||||||||||||||||||2|||.....1||O O O O|| |
| |||||||||||||||||||||||||||||......|| || |
| |68-Interface-Connector----+12-----++--J3---+| |
+-+--------------------------------------------+-+
80-pin Single Connector Attachment (SCA) SCSI Connector J1
----------------------------------------------------------
+----------------------------------------------+
| |
| |
| +------------------------------------------+ |
| | +--------------------------1-+ | |
| | | oooooooooooooooooooooooo2o | | |
| | | oooooooooooooooooooooooooo | | |
| | +80-----J1-SCSI--------------+ | |
+-+------------------------------------------+-+
Combination Connector - 8-bit
------------------------------
+-----------------+-----------------------------------------------+
| Part Number | Vendor |
+-----------------+-----------------------------------------------+
| 12-41254-01 | Quantum |
+-----------------+-----------------------------------------------+
| 87711-502 | Berg Electronics (formerly Dupont Electronics)|
+-----------------+-----------------------------------------------+
Includes 0.1-in pitch, 50-pin SCSI connector and 4-pin power
connector.
Combination Connector - 16-bit
-------------------------------
+-----------------+-----------------------------------------------+
| Part Number | Vendor |
+-----------------+-----------------------------------------------+
| 12-43123-01 | Quantum |
+-----------------+-----------------------------------------------+
| 87360-0003 | Molex |
+-----------------+-----------------------------------------------+
Includes 68-pin SCSI connector, 4-pin power connector, and a
2-mm pitch, 12-pin (2x6) Option connector.
Option Connector - 8-bit
------------------------
+-----------------+-----------------------------------------------+
| Part Number | Vendor |
+-----------------+-----------------------------------------------+
| 12-36484-08 | Quantum |
+-----------------+-----------------------------------------------+
| 954339-01-10-15 | 3M |
+-----------------+-----------------------------------------------+
| P92-300-204-6 | AMP, Inc. |
+-----------------+-----------------------------------------------+
| 87049-2085 | Molex, Inc. |
+-----------------+-----------------------------------------------+
A 2-mm pitch, 19-pin (2x10) keyed (missing pin) connector
Secondary Option Connector - 16-bit
-----------------------------------
+-----------------+-----------------------------------------------+
| Part Number | Vendor |
+-----------------+-----------------------------------------------+
| 12-36484-09 | Quantum |
+-----------------+-----------------------------------------------+
| P93-300-204-7 | AMP |
+-----------------+-----------------------------------------------+
| 954339-01-07-15 | 3M |
+-----------------+-----------------------------------------------+
A 2-mm pitch, 13-pin (2x7) keyed (missing pin) connector
Shunt Jumper - All Models
-------------------------
+-----------------+-----------------------------------------------+
| Part Number | Vendor |
+-----------------+-----------------------------------------------+
| 12-36482-01 | Quantum |
+-----------------+-----------------------------------------------+
| 86730-001 | Berg Electronics (formerly Dupont Electronics)|
+-----------------+-----------------------------------------------+
| LPC-SPG | Honda |
+-----------------+-----------------------------------------------+
A 2-mm pitch shunt for configuring termination characteristics
RAID Connector - SCA Models
---------------------------
+-----------------+-----------------------------------------------+
| Part Number | Vendor |
+-----------------+-----------------------------------------------+
| 12-41319-01 | Quantum |
+-----------------+-----------------------------------------------+
| SSC80-D01 | Specialty Electronics |
+-----------------+-----------------------------------------------+
Chamo 0.050 inch Series I 80-position plug
DC Power and pin connector assignments
--------------------------------------
+------------+ pin 1 +12 VDC
| 4 3 2 1 | pin 2 +12 Volts Return GROUND
+------------+ pin 3 + 5 Volts Return GROUND
pin 4 + 5 VDC
**********************************************************************
F E A T U R E S
**********************************************************************
QUANTUM XP31070/32150/34300 PRODUCT MANUAL 81-108333-01 4/1995
General Description
-------------------
The Atlas disk drives are 3.5-inch, high-capacity, state-of-the-art
drives designed for applications where high-capacity, performance,
and space demands are critical, such as Macintosh (TM), and Windows
(TM)-driven desktop and multi-tasking systems, local area networks,
and file servers.
Caching
-------
The disk cache is a look-ahead buffer used for combining or
coalescing I/O commands on a track-by track basis prior to accessing
the disk media. Throughput performance is greatly improved by
gathering and combining commands on a track basis rather than on a
command basis. With this unique system, multiple commands for a
particular track are coalesced in the buffer before accessing the
media.
As a result, multiple I/O commands, that address a single track are
logically combined, avoiding multiple disk accesses on multiple
rotations. Since most reads and writes are sequential, buffering data
before it is stored on the media yields greatly increased throughput
for most applications.
The drive electronics contains a 1MB segmented buffer that maximizes
the cache hit rate for sequential read streams. The cache is
organized in RAM as separate track line segments. Each track line
segment can hold data from one complete track on the media,
temporarily assuming the identity of the track for all input/output
functions.
Embedded Servo System
---------------------
Embedded servo information is written in a spoke configuration, 54
times on every track, on every disk surface. The spokes (or headers)
consist of quadrature analog pattern and digital address data. The
digital portion of the spoke data are read and used to locate the
desired track, spoke, and head number. The quadrature analog signal
portion is detected and used by a servo feedback control loop to
precisely position the head on the track center.
Data integrity and security
---------------------------
Atlas disk drives use a combination of parity checking, error
detection coding (EDC), error correction coding (ECC), and check-
pointing to protect stored data from media errors, transfer or
addressing errors, or errors introduced during sector reallocation.
Media Error Protection
----------------------
To ensure that data is the same as data written, the drive computes
and appends an Error Correction Code (ECC) to each sector of data
stored. The drive uses a 198-bit Reed Solomon code. This allows
correction of up to 10 bytes in each sector.
The ECC can correct a single burst error up to 73 bits in length or
a double burst error up to 25 bits in length for each burst.
The drive has the capability of correcting in hardware ("on-the-fly")
a single burst error up to 25 bits long with no increase in latency
time.
Spindle Synchronization
-----------------------
Spindle Synchronization is the process of causing the disk assemblies
in several disk drives to rotate to the same address location at the
same time. Synchronization is used in RAID (redundant arrays of
independent devices) mass storage systems, allowing a set of disk
drives to function as one drive.
To accomplish this, sector 0, track 0 of each drive must be under the
read/write heads at exactly the same time. With spindle
synchronization, all the drives are locked to the same relative
position.
If all the drives are synchronized exactly, the time used to access
one drive results in the next drive passing the correct position.
This problem is resolved by using an offset that is the sum of the
transmission delays of the interconnecting bus cable, data transfer
times, and the rotational latency of the drives.
Knowing how long it takes to set up an I/O operation and transfer
data to a drive, the SCSI controller can send the data to one drive
and, while that data is being transferred, set up the I/O transfer
to the next one. When the current transfer is complete, the
controller is ready to transfer the next, and so on.
Spindle Synchronization is controlled by the Rigid Disk Geometry and
(Vendor) Special Function Control pages of the MODE SELECT command.
NOTE
The drives must be homogenous. Other drive model series such as
Capella cannot function with Atlas-series drives.
Special Functions
-----------------
Quantum has incorporated a number of unique options into the drive.
The (Vendor) Special Function Control page is used to control these
options. The options include:
- Spin Delay - delays the spin-up of the drive to reduce startup
load of system power.
- Initiate Synchronous Data Transfer Negotiation - a toggle-type
parameter that allows the initiator to move between asynchronous
and synchrounous modes of data transfer.
- Slow Cable - adds an additional delay to REQ/ACK for very long bus
cables.
- No Multiple Active I/O Process - a toggle-type command to enable/
disable multiple I/O process.
- Force Disconnect - the drive can be forced to disconnect from the
SCSI bus after a SCSI Command is received in order to reduce on-bus
time. Force Disconnect works only when a typical, error-free
command is received.
- Write Protect - Prevents writing to the disk drive.
- Spindle Sync Check Interval - specifies the time, in minutes, of
the interval between spindle synchronization status checks.
- Stagger Spin Delay - specifies the time in 100 ms increments of the
delay the drive uses in the spin-up delay formula, allowing a
series of drives to be spin up at staggered time intervals.
Banded recording
----------------
In banded recording, the disk is divided into multiple bands or
partitions (also called notches or bit-zoned areas). Starting at
inner band, each next outer band has a hihger recording frequency.
The Atlas drives have 16 bands. The use of multiple-frequency
recording greatly increases the capacity of the drive.
Diagnostics
-----------
The drive has extensive diagnostic capabilities, including those
described below:
power-up self-test, periodic self-adjustments, and host diagnostics.
Quantum uses self-diagnostic tests and sense data tracking to manage
drive errors, in addition to logical sector address (LBA)
revectoring.
Power-Up Self-Test
------------------
The disk drive performs a self-diagnostic test immediately at power
up. If the drive fails its self-diagnostic tests, it will report
sense information but will not spin up. Both the Fault LED and a
Busy LED briefly illuminate during spin-up as a lamp test.
If the drive passes its self-tests and the spin-up jumper is
installed, it spins up and perform further diagnostics on the HDA.
The drive indicates "not ready" until the HDA tests are completed
successfully.
The drive diagnostics test the following:
- Drive master microprocessor
- RAM and ROM chips
- Buffer memory
- Gate array chips
- Read/write encoding circuits
- Basic servo functions
- SCSI interface control circuits
Following a selection time after power-on, the disk drive is able to
respond with appropriate status and sense data to the TEST UNIT
READY, INQUIRY, and REQUEST SENSE commands.
