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Hard Drive: QUANTUM: DAYTONA 341 AT 341MB 2.5"/SSL IDE / AT

D A Y T O N A   3 4 1   A T    QUANTUM
                                                      Native|  Translation
Form                 2.5"/SUPERSLIMLINE    Cylinders    1704|     |     |
Capacity form/unform   341/      MB        Heads           6|     |     |
Seek time   / track  17.0/ 5.0 ms          Sector/track     |     |     |
Controller           IDE / AT              Precompensation
Cache/Buffer           128 KB SEGMENTED    Landing Zone
Data transfer rate    3.000 MB/S int       Bytes/Sector      512
                     13.000 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
Supply voltage     5 V          Temperature *C         5 55    |    -40 65
Power: sleep              W     Humidity     %        10 90    |     10 90
       standby        0.2 W     Altitude    km            3.048|        12.192
       idle           1.2 W     Shock        g        10       |    300
       seek           2.3 W     Rotation   RPM      4500
       read/write     2.3 W     Acoustic   dBA        33
       spin-up            W     ECC        Bit   112,REED SOLOMON
                                MTBF         h     350000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates



  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |*X
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |      SP                  CS DS                          |  1
  |    +-+-+                +-+-+-+                         |XX



Jumper Setting

The jumper pins are located on the underside of the printed circuit
board (PCB).

         SP                  CS DS                          |  1
  |    +-+-+ +              +-+-+-+ +                       |XX
             |                      |
     +-------+---+         +--------+-------+
     | +-++-+    |         |+-++-++-+       |
     | ++++++Pins|         |+++++++++ Pins  |
     |   SP      |         |  CS DS         |
     | +*--*+    |         |+*--*+          |
     | +----+    |         |+----+Jumper    |
     | Jumper    |         | OR +*--*+      |
     +-----------+         |    +----+Jumper|

There are two sets of jumper pins. The SP is labeld "SP" for slave
present. The other set (three jumper pins) has two labels "CS" and
"DS" for Cable Select and Drive Select. The center pin is common to
both the CS and the DS positions.

When a jumper block is on the center pin and the pin nearest the
interface connector, DS is enabled. When a jumper block is on the
center pin and the pin furthest from the interface connector, CS is

Jumper blocks can be placed in a storage position by locating them on
one jumper pin as shown in the following Figure.

       +-++-+               +-++-++-+
       ++++++Pins           +++++++++ Pins
         SP                   CS DS
          +*--*+                  +*--*+
          +----+Jumper            +----+Jumper

 Master Drive Configuration
       +-++-+               +-++-++-+
       ++++++Pins           +++++++++ Pins
         SP                   CS DS
          +*--*+               +*--*+
          +----+Jumper         +----+Jumper

 Master Drive with Slave Present
          +-++-+               +-++-++-+
          ++++++Pins           +++++++++ Pins
            SP                   CS DS
          +*--*+                  +*--*+
          +----+Jumper            +----+Jumper

 Slave Drive Configuration
       +-++-+               +-++-++-+
       ++++++Pins           +++++++++ Pins
         SP                   CS DS
          +*--*+                  +*--*+
          +----+Jumper            +----+Jumper

Cable Selection
The drive can be configured such that its status as a master or slave
drive can be determined by the cabling from the host system.

       +-++-+               +-++-++-+
       ++++++Pins           +++++++++ Pins
         SP                   CS DS
          +*--*+            +*--*+
          +----+Jumper      +----+Jumper



The Quantum Daytona products are high-capacity 2.5-inch hard disk
drives that provide unmatched mass storage solutions for slim sub-
notebook and full-featured notebook computers.

The Daytona 256 is the first device to offer subnotebook users 256 MB
of formatted storage capacity in a 12.5-mm-high drive for subnote-
books and a 341 MB, 19-mm-high drive for notebooks.

All four Daytona drives bring desktop PC performance to notebook
computing with a fast internal data transfer rate of 36 Mbits/second.
Daytona performance benefits from a common architecture shared with
two Quantum families of high-performance 3.5-inch drives. Matching
features include a multi-segmented adaptive cache, local bus support
with fast multiword DMA and AutoRead and AutoWrite technology.

The Daytona drives leverage most strongly off the design of Quantum's
earlier GoDrive GLS line of 2.5-inch devices. They share GLS' highly
integrated electronics, which consists of only five chips, as well as
its firmware base. This leveraged approach to design eases
qualifications and improves product availability.

The Daytona drives feature exceptional ruggendness with a very high
level of protection against non-operating shock. For energy
efficiency, the drives comply with industry standards on power
consimption, drawing only 0.2 watts of power in standby mode.

Reliability Features

ShockLock Pivoting Magnetic Latch
An innovative pivoting magnetic latch protects the drives from short-
duration, non-operating shocks as high as 300 Gs, which is the high-
est level of protection offered by 2.5-inch disk drives. The magnetic
latch swings away from the drive's actuator to eliminate disturbances
when inner tracks are read.

Error Correction Code (ECC) On-the-Fly
The Daytona product use a custom ASIC to implement a state-of-the-art
error correction code that maintains data integrity at high through-
put rates.

Performance Features

Adaptive Segmentation
The Daytona products feature Adaptive segmentation for more efficient
cache use. With this feature, the buffer space needed for read and
write operations is dynamically allocated, which yields higher
throughput from a given buffer side.

DisCache and WriteCache Firmware
DisCache firmware optimizes disk drive performance by speeding data
access times and data retrieval, and increasing throughput. Quantum's
proprietary WriteCache firmware allows the host-to-buffer transfer of
data to occur while the buffer-to-disk transfer of a prior command is
still executing.

Upper 32 KB Buffer used for firmware.

Power Conservation Features

StackWrite Firmware
StackWrite firmware can save up to 13 percent of battery power while
providing faster system response. The unique firmware accumulates
write requests in buffer memory instead of directly onto the disk
when the Daytona drives are in standby mode under battery power.

AutoIdle and AutoPark
To conserve battery power, the actuator motor on the Daytona products
can be shut down after five seconds of inactivity - without host
intervention. With the new AutoPark mode, Daytona's heads are auto-
matically parked over the dedicated landing zone when AutoIdle is

ATA Compliance
Daytona drives with an AT interface incorporate all the energy-
efficient modes defined by ATA/CAM (AT Attachment/Common Access

Versatility Features

MCC Compatibility
The Daytona disk drives conform to the latest standards of the
Manufactures Compatibility Committee (MCC). As a result, the drives
can easily slide into position and connect directly to a hard-mounted
connector on a notebook's motherboard.

AT Bus Cable Select Hardware
Automatic cable-select hardware simplifies disk drive installation by
eliminating the need for a physical master/slave jumper. This is
ideal for removable drive applications, when the same Daytona drive
is a master in a notebook computer and a slave when used with a
desktop computer.



Comparing the Fast ATA and Enhanced IDE Disk Drive Interfaces
Why are Fast ATA and Fast ATA-2 Important?
Faster data transfer rates are important because a computer is
only as fast as its slowest component. Today's 486, Pentium, and
PowerPC-based computers offer processor speeds many times faster
than only two years ago. Bus speeds have also increased with the
inclusion of 32-bit VL and PCI local buses, which have a maximum
data transfer rate of 132 MB/second.

Faster buses mean that data can be transferred from the storage
device to the host at greater speeds. Fast ATA and Fast ATA-2 allow
disk drives to store and access this data faster, thus enhancing the
other high-speed components in the system and removing the
bottleneck associated with older ATA/IDE drives. In short, Fast
ATA helps bring very high performance to desktop PC systems.

In addition, when compared to SCSI, Fast ATA is the least expensive
way to achieve faster disk drive data transfer rates and higher
system performance. The implementation of Fast ATA through system
BIOS provides performance without incremental hardware co sts.
Older systems can support Fast ATA using an inexpensive host

Fast ATA and Fast ATA-2 are easy to implement in either VL or PCI
local bus systems. The hardware connection can be made using a
standard 40-pin ATA ribbon cable from the drive to the host
adapter. Direct connection to the motherboard further eases
integration when provided by the motherboard supplier.

Once connected, the high data transfer capabilities of Fast ATA can
be enabled through the data transfer options found in most CMOS BIOS
setup tables. Newer versions of BIOS provide automatic configuration
for Fast ATA drives.

Fast ATA can improve efficiency by allowing more work to be
completed in less time because the computer moves data faster.
Graphic, multimedia, and audio/visual software users will benefit
most because the speed of those applications, which work with large
blocks of data, are transfer-rate dependent.

The Fast ATA and Enhanced IDE interfaces both use the local bus to
speed data transfer rates. Enhanced IDE also uses the same PIO modes
as Fast ATA, although a data transfer rate equal to the PIO mode 4
rate has not been announced for Enhanced IDE. The major differences
between Fast ATA and Enhanced IDE are that the latter includes
three distinct features in addition to fast data transfer rates.
The additional features of Enhanced IDE are as follows:

High-capacity addressing of ATA hard drives over 528 MB -
a BIOS and device driver function.

Dual ATA host adapters supporting up to four hard disk drives per
computer system - a function of BIOS, operating system, and host
adapter, not the drive.

Support for non-hard disk drive peripherals such as CD-ROMs -
a function of BIOS and the operating system, not the drive

Each of these features supports improved functionality at a system
level, a positive development for the industry and end users.
However, support for all three features requires an extremely high
degree of integration and revisions to operating systems and hard-
ware, in addition to BIOS changes. Specific support is required not
only for the storage peripherals but also for host adapters, core
logic, the system bus, BIOS, and operating systems - virtually every
major block of PC architecture.

There is no central industry-supported standard that controls the
features of Enhanced IDE. With no standard, some products sold as
"Enhanced" may provide only one of the three features of Enhanced
IDE. For example, fast data transfer rate support is be coming
standard on mid-range and high-end local bus systems. This single
feature could satisfy the users immediate requirements without the
need for the other features of Enhanced IDE.

In the future, if the same system is upgraded to add the remaining
features of Enhanced IDE, users may be forced to purchase an Enhanced
IDE package that contains a feature already installed. This could
result in unnecessary costs, integration conflicts, and in-
compatibility with original factory implementations.

Fast ATA, on the other hand, represents only the fast data transfer
rates for ATA hard drives (support for PIO mode 3 or 4 and DMA mode
1 or 2). Fast ATA and Fast ATA-2 data transfer rates can be easily
achieved when the system BIOS and hard drive suppo rt the PIO and
DMA protocols.

BIOS that supports Fast ATA does not necessarily support high-
capacity addressing, dual host adapters or non-hard drive
peripherals. But these features are being introduced independently
by system manufacturers in order to compete in the PC marketplace.

All of Quantum's disk drives designed for PCs now support Fast ATA,
and new products with Fast ATA support will be introduced in early
1995. The drives are also fully backward compatible with older ATA/
IDE (non-Fast ATA) BIOS.

The Quantum drives support both the Extended CHS (Cylinder Head
Sector) and LBA (Logical Block Address) addressing methods in
overcoming the 528 MB DOS capacity barrier. Quantum drives can also
be used with dual host adapters.

Finally, there are no incompatibilities with Quantum hard drives
that would prevent computer systems from supporting non-hard drive

Quantum drives that support Fast ATA include the following families:

Quantum ProDrive LPS 170/210/340/420
Quantum ProDrive LPS 270/540
Quantum Maverick 270/540
Quantum Lightning 365/540/730
Quantum Daytona 127/170/256/341/514

Fast ATA and Fast ATA-2 are important technologies that can take
advantage of the performance provided by the latest high-speed
microprocessors and bus architectures. The high-speed interfaces
are based on industry standard specifications and are the least
expensive way to achieve faster disk drive data transfer rates.
Fast ATA is not a group of features that requires an extremely
high level of integration, and only represents the fast data transfer
rates for ATA hard drives (PIO mode 3 or 4 and DMA mode 1 or 2).

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