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Hard Drive: FUJITSU: M2614ET 172MB 3.5"/HH IDE / AT

M 2 6 1 4 E T    FUJITSU
NO MORE PRODUCED                                      Native|  Translation
Form                 3.5"/HH               Cylinders    1334|  667|     |
Capacity form/unform   172/      MB        Heads           8|   16|     |
Seek time   / track  20.0/ 8.0 ms          Sector/track   33|   33|     |
Controller           IDE / AT              Precompensation
Cache/Buffer            64 KB              Landing Zone
Data transfer rate    1.250 MB/S int       Bytes/Sector      512
                      7.400 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
Supply voltage     5/12 V       Temperature *C         5 45    |    -40 60
Power: sleep              W     Humidity     %        20 80    |      5 95
       standby            W     Altitude    km    -0.060  3.000|        12.000
       idle               W     Shock        g         5       |     50
       seek           6.4 W     Rotation   RPM      3490
       read/write         W     Acoustic   dBA        43
       spin-up            W     ECC        Bit   32,56
                                MTBF         h      50000
                                Warranty Month
Lift/Lock/Park     YES          Certificates



  |                                                         |
  |                                                         |
  |                                                         |
  |                                                         |XX
  |                                                         |XX
  |   +-+                            SW2                    |XX 40 pin
  |   +-+                  6+-----------------------+1      |XX
  |  LED                    |                       |       |XX
  |                         +-----------------------+       |XX
  |                                                         |XX
  |                         +--------------+                |XX
  |                         |              |                |XX
  |                        4+--------------+1               |XX
  |                               SW1                       |
  |                                                         |XX
  |                                                         |XX Power
  |                                                         |XX CN2



Switches locations

x = Switches are set from factory

 SW1  IRQ14/RSVD switch
         1     OFF    After exchange Pin 29 = IRQ14
         2     ON                    Pin 31 = Reserved

         1     ON     Normal status  Pin 29 = Reserved
 x       2     OFF                   Pin 31 = IRQ14

This operation is to exchange settings of pin 29 and 31 to eliminate
cross talk influence in the host interface cable.

 SW1  Slave present mode / Active mode
 x       3     OFF    Active mode
         4     ON

         3     ON     Slave present mode
         4     OFF

This plug should be set in Active mode on daisy-chained connection
of both M261xET.

The logical information of setting plugs is subject to change without
prior notice.

 SW2  MASTER/SLAVE drive system
         1     OFF    SLAVE side of 2-drive system
         2     ON

         1     ON     MASTER drive
 x       2     OFF

 SW2  1-drive/2-drive system
         3     ON     2-drive system
 x       3     OFF    1-drive system

 SW2  Write protect (provided as an option)
         4     ON     Write protected
 x       4     OFF    Write enabled

 SW2  I/O channel ready (IOCHRDY)
         5     ON     Pin 27 = IOCHRDY
 x       5     OFF    Pin 27 = Reserved

When the data transfer rate of the host becomes very high (near
7.4MB/s or more), the M261xET must provide wait state to synchronize
data transfer. This setting is used to output IOCHRDY to pin 27 of
the host interface.

 SW2  ECC bytes
         6     ON     4 bytes
 x       6     OFF    7 bytes

In 4Byte ECC mode, the READ LONG/WRITE LONG command can be executed
successfully only under the following conditions:

   -> READ LONG -> WRITE LONG sequence is only acceptable
   -> The sector number of READ LONG and WRITE LONG must be the same
   -> The number of sector on WRTIE LONG must be the same one that
      host issued to the drive on READ LONG.



Notes on installation

 Installation direction
     horizontally                          vertically
    +---------------+                  +--+                  +--+
    |               |                  |  +-----+      +-----+  |
    |               |                  |  |     |      |     |  |
 +--+---------------+---+              |  |     |      |     |  |
 +----------------------+              |  |     |      |     |  |
                                       |  |     |      |     |  |
      X           X                    |  |     |      |     |  |
 +------X-------X-------+              |  |     |      |     |  |
 +--+-----X---X-----+---+              |  +-----+      +-----+  |
    |      X X      |                  +--+                  +--+
    |    X    X     |
     X            X

If the drive is installed in any of the above three installation
directions, the level deviation must not exceed 5*.

Never install PCA to the top!

Ambient temperature
The operating temperature range for the IDD in a cabinet is specified
at a distance of 3cm from the IDD. Design the air flow in the cabinet
to keep.
The maximum ambient temperature with in 45*C.
The air circulation in the cabinet must be designed so that the PCA
side of the IDD is particularly cooled. The cooling effect should be
confirmed in measuring the surface temperature of the specific IC
and DE.

Cable requirements
The cable of twisted pairs and neighboring line separated individu-
ally is not allowed to use for the host interface cable. It is be-
cause that the location of signal lines in these cables is not fixed
and so the problem on the crosstalk among signal lines may occur.

Cable length: 0.5m Max.



The M261xET supports a look-ahead cache to increase system throughput
The M261xET uses 56KB of the cache to read and 6KB to write and a 2KB
area to download sequencer programs.

Data transfer rate
A maximum transfer rate of 7.4MB/s is accomplished with a 30MHz clock
signal and high-speed buffer management. When the data transfer rate
becomes near 7.4MB/s or more, the host must recieve IOCHRDY signal
and maintain the transfer synchronisation by setting a wait state.

Power save mode
When the M261xET will not be operated for a long time, power consump-
tion can be reduced by using the power save mode.

The M261xET supports 2 power modes which are selectable by the POWER
command: idle mode and power save mode. In the power save mode, power
is supplied only to the controller circuit, the spindle motor circuit
and the drive control IC. Power to the other components is shut off
by the power FET. Thus low power consumption is accomplished. In this
mode, the spindle keeps rotation for hot restart.

Start and stop time
Typical start time (time from when power is turned on until the IDD
is ready) is 8 seconds or less, and typical stop time (time to com-
pletely stop when power is turned off) is 17 seconds or less.

 Power on/off sequence
 The +5V and +12V power supplies are monitored by the voltage check
 circuit. The circuit allows a write current to flow only when the
 both voltages are normal. Accordingly, no power sequence is required.
 This is for protection of the content of the medium.

Power consumption

            Steady state         6.4W
            Power save state     3.5W

Steady state includes SEEK, WRITE and READ operation

Mean Time Between Failures (MTBF)
The MTBF is defined as follows:

                            Operating time
          MTBF = -----------------------------------------
                 Number of equipment failures in the field

Operating time is the total time duration during which the power is
on, excluding preventive maintenance.
Failure of the equipment means a failure that requires repair, ad-
justment, or replacement, excluding preventive maintenance. Errors
by the operator, failures due to power failures, controller faults,
cable faults, bad environmental conditions, or other failures not
caused by the equipment itself are not included.

The IDD is designed for an MTBF of 50.000 hours.

Mean Time To Repair (MTTR)
MTTR is the average time taken by a well-trained service engineer to
diagnose and repair a unit malfunction. The IDD is designed for a
MTTR of 30 minutes or less.

Service life
Overhaul of the drive is not required for the first five years.

Data protection against power failure
Integrity of the data on the disk is guaranteed against all forms of
abnormal DC power except a power failure during writing.

Media Defect
When a physical track contains two ore more bad sectors, all sectors
in the track are given BAD flags in formatting before the M261xT is
As regards media defect, it defines with number of bad tracks as
follows. (provided that CYL0, HD0 is defect free)

 Number of bad tracks per drive:  max. 24 M2612ET
                                  max. 36 M2613ET
                                  max. 48 M2614ET

System configuration
Up to two IDDs are connectable.
In principle, perfect operation cannot be guaranteed in case of
daisy-chained combination (2-drvie system) of M261xET drive and other
manufacturer's drive.

Drive BIOS specification
As BIOS has limitation of number of cylinders ( 1024), a host cannot
be operated by physical parameters. Therefore, logical/physical
translation (emulation) is needed, a host has to use M261xET by logi-
cal parameters. BIOS specifications are defined by SET PARAMETERS
command which a host issues. A customer who can modify FIXED DISK
PARAMETER TABLE in the BIOS selects parameter freely and can set BIOS
specification. However, the parameter must be selected within the
storage capacity which M261xET has. And it is possible that customer
uses M261xET by selecting appropriate DRIVE TYPE in the BIOS. In this
case, M261xET works in the storage capacity which customer selected.
Logical parameter which can use without loss of physical capacity of
M261xET is shown below:

                           M2612ET M2613ET M2614ET
      Number of Cylinders |  667  |  667  |  667
      Number of heads     |    8  |   12  |   16
      Sectors per track   |   33  |   33  |   33

Since LOW LEVEL FORMAT is performed with these parameters, whole data
area of M261xET can be formatted. M261xET is formatted with physical
parameters at factory shipment.

When M261xET is operated by TEST PROGRAM (Bench Mark Test etc.) which
is for measurement of the performance of HDD, according to BIOS spe-
cifications, actual performance may not be measured. However, the
result of Bench Mark Test etc. and the performance of the actual use
are not always equal. BIOS specification needs to decide that result
of file access depending on systems is evaluated synthetic.



Tips & Hints about ICP controllers and other peripherals

Tagged queues and Fujitsu M 26xx harddisks
Fujitsu Harddisks of the M26XX series do not support the SCSI-II
feature tagged queues. You should disable this feature in the
initialize disks menue of the GDTSetup program. An inquiry command
shows, that the harddisk supports tagged queues (this is why you can
enable it in the GDTSetup) but this is not true as stated by Fujitsu

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