Hard Drive: MAXTOR: 7345A 345MB 3.5"/SL IDE / AT
7 3 4 5 A MAXTOR
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 3.5"/SLIMLINE Cylinders 2233| 790| |
Capacity form/unform 345/ MB Heads 4| 15| |
Seek time / track 14.0/ 3.0 ms Sector/track | 57| |
Controller IDE / AT Precompensation
Cache/Buffer 64 KB LOOK-AHEAD Landing Zone
Data transfer rate 3.750 MB/S int Bytes/Sector 512
9.000 MB/S ext
Recording method RLL 1/7 operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 5 50 | -40 60
Power: sleep W Humidity % 5 95 | 5 95
standby W Altitude km -0.061 3.048|
idle 3.0 W Shock g 10 | 70
seek W Rotation RPM 3551
read/write 3.2 W Acoustic dBA 32
spin-up W ECC Bit REED SOLOMON,WITH 11BIT BU...
MTBF h 300000
Warranty Month 12
Lift/Lock/Park YES Certificates CSA,FCC,IEC380,TUV,UL1950,VDE
Layout
MAXTOR 7345A PRODUCT MANUAL PART #1230 P3
+----------------------------------------------------------+ | +-+-+-+-+ | | +++++++++ | | J25-+ |J23+--J22 XX | J24---+ +-+ XX | +-+J20XX | +-+J19XX | +-+J18XX J1 | +-+J17X* | +-+J16XX | XX | XX | XX | XX1-2 | | 1 | XX Power | XX J2 +----------------------------------------------------------+
Jumpers
MAXTOR 7345A PRODUCT MANUAL PART #1230 P3
Jumper setting
==============
Note: Jumpers J17, J18, J24, and J25 factory reserved.
Jumper J19 may be used to store shunt if used in slave mode.
Abnormal operation may occur if reserved jumpers are altered.
J16 I/O Channel Ready
----------------------
CLOSED Option Enabled
OPEN Option Disabled (default)
J20 Master/Slave
-----------------
J20 CLOSED Only drive in single drive system (Default)
J20 CLOSED Master in dual drive system
J20 OPEN Slave in dual drive system
J22/J23 SYNC Spindle Control
-----------------------------
J22 OPEN Sync Slave
J22 CLOSED Sync Master
J23 OPEN Sync Spindle Disabled (Default)
J23 CLOSED Sync Spindle Enabled
Install
MAXTOR 7345A PRODUCT MANUAL PART #1230 P3
Notes of Installation
=====================
Installation direction
----------------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
| | | | | |
+---------------------+ | +-----+ +-----+ |
+-+-----------------+-+ +--+ +--+
| |
| |
+-----------------+
The drive will operate in all axis (6 directions).
Recommended Mounting Configuration
----------------------------------
Maxtor 7000 Series drive design allows greater shock tolerance than
that afforded by larger, heavier drives. The drive may be mounted in
any attitude using four size 6-32 screws with 1/8" maximum
penetration.
Allow adequate ventilation to the drive to ensure reliable drive
operation.
Air Filtration System
---------------------
All 7000 Series drives are designed to operate in a typical
office environment with minimal environmental control. Over the life
of the drive, a 0.3 micron filter and breather filter (located within
the HDA) maintain a clean environment to the heads and disks.
Read/Write Electronics
----------------------
An integrated circuit mounted within the sealed enclosure (near the
read/write heads) provides one of four head selection (depending on
the model), read preamplification, and write drive circuitry.
Read/Write Heads and Disks
--------------------------
Four low mass, low force read/write heads record data on two 3.5"
diameter disks. Maxtor uses a sputtered thin film medium on all
disks for 7000 Series drives.
Drive Meachanism
----------------
A brushless DC direct-drive motor rotates the spindle at 3,551 RPM
( 0.1%). The dynamically balanced motor/spindle assembly ensures
minimal mechanical runout to the disks. A dynamic brake provides a
fast stop to the spindle motor upon power removal. The speed
tolerance includes motor performance and motor circuit tolerances.
Voice Coil Actuator
-------------------
All 7000 Series drives employ a rotary voice coil actuator which
consists of a moving coil, an E-block or actuator arm assembly, and
stationary magnets. The actuator moves on a low-mass, low-friction
center shaft. The low friction generated contributes to fast average
access time and low power consumption.
Automatic Headpark and Lock Operation
-------------------------------------
Immediately following power-down, dynamic braking of the spinning
disks delays momentarily and lets the heads move to an inner
mechanical stop. A small fixed magnet holds the heads in place as the
disk spin down. The heads are released only when power is again
applied.
64K Look-Ahead Cache
--------------------
Caching with look-ahead read decreases access time to sequential data
in the drive by temporarily placing small amounts of data in high
speed memory. Cache may contain from 0 to 128 sectors.
How Look-ahead Cache Functions
------------------------------
In the absence of an error, corrected data, or an interrupt command,
the drive caches not only requested sectors, but "look-ahead" and
caches all remaining physical sectors until cache is full. The
"look-ahead" feature prepares the drive to transfer cached data when
the host request it (preventing access time delays). Commands are
interrupt driven, so if the drive is performing a look-ahead cache
when a command is received, it will stop caching and process the
command.
Resets and Write or Write Long commands to any of the cached sectors
invalidate the whole cache. Sectors on a track are cached until an
error occurs, until corrected data is read, or until a host command
interrupts the drive.
Dual Drive Support
------------------
Two drives may be accessed via a common interface cable, using the
same range of I/O addresses. The drives are jumpered as drive 0 or 1
(Master/Slave), and are selected by the drive select bit in the
Drive/Head register of the task file.
All Task File registers are written in parallel to both drives. The
interface processor on each drive decides whether a command written
to it should be executed; this depends on the type of command and
which drive is selected. Only the drive selected executes the command
and activates the data bus in response to host I/O reads; the drive
not selected remains inactive.
A master/slave relationship exists between the two drives: drive 0 is
the master, and drive 1, the slave.
Sector Address Translation
--------------------------
All 7000 Series drives feature a Universal Translate Mode. In an
AT-class system, the drive may be configured to any specified
combination of cylinders, heads, and sectors (within the range of the
drive's formatted capacity).
The 7345A powers-up in the Translate Mode:
Cylinders Heads Sectors 790 15 57
Interface Connector
-------------------
All 7000 Series AT drives have a 40-pin interface connector mounted
on the PCBA. The drive may connect directly to the host; or it can
also accommodate a cable connection (maximum cable length: 18
inches).
(Striped Edge = Pin 1)
Features
MAXTOR 7345A PRODUCT MANUAL PART #1230 P3
Introduction
------------
Maxtor 7000 Series AT disk drives are 1" high, 3.5" random access
storage devices which incorporate an on-board AT controller. Maxtor
engineers have applied recent advances in hard drive technology to
the design and manufacture of these drives. High data transfer rates
and fast access times make the 7345A especially well-suited to high-
end desktop and entry level workstation applications.
Defect Management
-----------------
The 7345A has three (3) spare sectors per cylinder, located at the
end of each cylinder. Upon detection of a bad sector that has been
reassigned, the next sequential sector is used.
The first spare sector makes up for the loss of sector 3, and so
maintains the sequential order of data, with 2 spare sectors still
allocated for that cylinder. This push down method assures maximum
performance.
In the rare occurrence that the number of reassigned bad sectors
exceedS the number of spare sectors allocated for that cylinder, an
alternate track at the inner diameter of the disk is used. The 7345A
has four (4) alternate tracks.
Error Correction Code
---------------------
The 7345A uses a Reed-Solomon code for error detection and
correction. The error correction polynomial can correct one error
burst with a maximum of 11 bits. Individual bursts ( 11 bits) are
corrected without any resulting performance degradation.
Zone Density Recording
----------------------
The disk capacity is increased with bit density management - common
with Zone Density Recording. Each disk surface is divided into 7
circumferential zones. All tracks within a given zone contain a
constant number of data sectors. The number of data sectors per track
varies in different zones; the outermost zone contains the largest
number of data sectors, and the innermost contains the fewest.
Seek Time
---------
+----------------------------------+--------+
|Track-to-Track msec. typ. | 3 |
+----------------------------------+--------+
|Average msec. typ. | 14 |
| msec. max. | 27 |
+----------------------------------+--------+
|Controller overhead msec. | 1 |
+----------------------------------+--------+
|Latency msec. avg. | 8.45 |
+----------------------------------+--------+
Execute Drive Diagnostics
-------------------------
Commands the drive to implements the internal diagnostics tests.
(These tests are executed only upon command receipt; they do not run
automatically at power up or after a reset.)
The drive sets BSY immediately upon receiving this command.
This table presents the codes and their descriptions:
Note that the value in the Error register should be viewed as a
unique 8 bit Code.
Error Code Description
01 no error detected
02 formatter device error
03 sector buffer error
04 ECC circuitry error
05 controller microprocessor error
8x slave drive failed
Note: If a slave drive fails diagnostics, the master
drive OR's 80 hex with its own status, and loads that
code into the Error register.
If a slave drive passes diagnostics (or a slave is
absent), the master drive OR's 00 with its own status
and loads that code into the Error register.
General
MAXTOR IDE INSTALLATION
INSTALLATION PROCEDURE FOR AN IDE DRIVE
---------------------------------------
1. Install a 40 pin Data Cable ensuring that pin 1, which can be
identified by the striped edge of the cable, is closest to the
power connector on the drive.
2. Install a DC power cable to the back of the drive.
3. Verify the jumper configurations for Master/Slave operation
(Note: Master will be the bootable drive. The slave will not
be bootable.) Also make sure the existing C: drive is jumped
to be the Master in a two drive system, not the only drive in
the system.
4. Apply power to the computer.
4a. When memory test is complete go into your system's Standard
CMOS set-up.
(Note: There are various ways to get into CMOS set-up, please
refer to system's manual for instructions.)
4b. If your system's BIOS supports a user programmable drive
type, program the BIOS with the default parameters of your
drive. If your system does not support a user programmable
drive type choose parameters that closely match but do not
exceed the drives MegaByte capacity. Escape from set-up
then choose write to CMOS and exit.
5. Boot from a DOS diskette that has FDISK.EXE and FORMAT.COM on
it. At the A> prompt type in FDISK. At the menu options select
option 1 to create a DOS partition. Another menu will appear
and from those options choose 1 to create a Primary DOS
partition. Select yes to make 1 large partition and it will
automatically become active. Then escape from FDISK.
6. At the A> prompt type in FORMAT C:/S This does a high-level
format on the drive and transfers the system files in order for
the drive to be bootable. (Note: IDE drives are low-level
formatted from the manufacturer and only need a high-level
format).
To configure the drive as a slave drive repeat steps 1-4 and
proceed with steps 5a. and 6a. as follows:
5a. At the C> prompt type in FDISK. When the menu options appear
select option 5 to switch to the second drive. Enter fixed
disk drive number 2. Then choose option 1 to create a DOS
partition, then select option 1 again to create a Primary DOS
partition or option 2 to create an Extended DOS partition.
(Note: C and D drives will always be the Primary partitions
but only the Primary partition on C: will have a status of
active).
6a. Proceed with a high-level format on the drive by typing FORMAT
D: (Note: Make sure the correct drive letter has been selected
for format).
7. The drive is now bootable. As a test remove the DOS diskette
from A and press reset to reboot the computer, a C> should be
displayed, the drive is now ready for operation.
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