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Hard Drive: IBM: DFHC-31080 (C1C/B) 1126MB 3.5"/SL SERIAL SSA




D F H C - 3 1 0 8 0   ( C 1 C / B )    IBM
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        |     |     |
Capacity form/unform  1126/      MB        Heads            |     |     |
Seek time   / track   7.5/     ms          Sector/track     |     |     |
Controller           SERIAL SSA FIBRE OPT  Precompensation
Cache/Buffer           512 KB SEGMENTED    Landing Zone
Data transfer rate    7.100 MB/S int       Bytes/Sector      512
                     80.000 MB/S ext SSA
Recording method                                    operating  | non-operating
                                                  -------------+--------------
Supply voltage     -            Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle               W     Shock        g                 |
       seek               W     Rotation   RPM      7200
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h    1000000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

Layout

IBM DFHC-CXC/B ULTRASTAR XP SSA INSTALLATION NOTES

 +-D32------------------------------------------------------------D1-+
 ++ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ++
  | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
 X| * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |X
  | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
  +A32------------------------------------------------------------A1+

       (Electrical connectors (rear and top view) - CxC models)

Jumpers

IBM DFHC-CXC/B ULTRASTAR XP SSA NOTES ON INSTALLATION

Option pins and indicators
--------------------------
Ultrastar XP SSA drives contain option pins and/or indicators used to
sense and report fault conditions and to enable certain features of
the drive. The existence and defintion of these pins are model
dependent.

 +-D32------------------------------------------------------------D1-+
 ++ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ++
  | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
 X| * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |X
  | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
  +A32------------------------------------------------------------A1+

       (Electrical connectors (rear and top view) - CxC models)

Unitized Connector
------------------

        1                       -MFG
     Programmable  GND          Test
 +--+        +5V  (long) -SYNC  Mode   +--+
 |  +---9-----7-----5-----3------1-----+  |
 |                                        |     8 = -Device Fault
 |  +--10-----8-----6-----4------2-----+  |     4 = -Write Protect
 +--+              -Device     -Auto Start+
   Programmable    Activity
        2

           (long)
  +-------+GND  +3.3V                                +------
  +----+  |15    13    11    9     7    5    3    1  |  +---
       |  +------------------------------------------+  |
       |  +------------------------------------------+  |
       +--+16    14    12   10     8    6    4    2  +--+
           GND  +3.3V
           (long)

 11 = -Power Fail
 12 = Gnd (long)
 09 = +5V
 10 = Gnd (long)
 07 = Gnd (long)
 08 = Gnd (long)
 05 = +12V
 06 = +12V
 03 = Gnd (long)
 04 = Gnd (long)
 01 = +12V Charge (long)
 02 = +5V Charge (long)

 The unitized connector is located on the left side of the top view
 (bottom drawing). The jumper connector is located on the right side
 of the top view (bottom drawing). This jumper connector is referred
 to  as front jumper because of its front location. It is reserved for
 IBM engineering use only.
 Manufacturing test mode (option port pin 1)
 -------------------------------------------
 A low active input pin, that when active (pulled below 0.8V) makes
 pin 2, 3, 4, 6, 8, 9 and 10 available to be redefined. Pins 5 and 7
 must remain ground and +5V respectively. One possible purpose for
 this pin is to allow a manufacturing tester to redefine the option
 pins to what ever function it desires, while allowing the shipped
 product to return to the standard product definitions in the customer
 environment. All models (CxC and CxB) reserve this pin but it is not
 connected to any internal logic.

Auto start pin (option port pin 2)
----------------------------------
A low active input pin, that when active (pulled below 0.8V) on CxC
model causes the drive motor to spin up and become ready for media
access operations after power is applied without the need to receive
a start/stop unit command. When inactive (pulled above 2.0V), the
drive motor shall not spin up until after the receipt of a start/stop
unit command. The signal is set to be sampled by the device at power
on, or hard reset or soft reset conditions.

This pin is not accesible on CxB models.

Sync pin (option port pin 3)
----------------------------
Th esync input/output pin on CxC model can be used for synchronizing
among devices. The synchronization is achieved by having one device
use this pin as an output to transmit one sync character one per
its spindle revolution. The other node may use this pin as an input
and synchronize their spindle revolution position to match the sync
signal. The SSA network provide sync character over SSA link, but
this option pin allows synchronization across multiple SSA networks,
or allow tighter latency of the sync pulse.

The width, period, and tolerance of the negative active sync pulse is
manufacturer dependent, and thus synchronization across different
manufacturers or even different product lines of the same
manufacturer is not guaranteed. The sync pin usage is controlled by
mode pages within the mode select command.

This pin is not accessible on CxB model.

Write protect pin
-----------------
The write protect pin is a low active pin, thatz when active (pulled
below 0.8V) the drive will prohibit commands that alter the customer
data area portion of the media from being performed. The state of
this pin is monitored on a per command basis.

This pin is not accessible on CxB model.

Ground long (option port pin 5)
-------------------------------
The ground long output pin on CxC models can be used to drive an
external light emitting diode. CxB models have an integrated green
LED.

 CxC models provide up to 24 mA of TTL level LED sink current
 capability. Current limiting for the LED is provided on the
 electronics card. The anode may be tied to the +5V power source
 (provided on the unitized connector). The LED cathode is then
 connected to the device activity pin to complete the circuit.

 +5V (option port pin 7)
 -----------------------
 The +5V output pin on CxC and CxB models shall supply up to 1.0Amp
 of current limited +5V ( 10%), as long as power is supplied to the
 device.

Device fault pin/indicator (option port pin 8)
----------------------------------------------
The device fault pin on CxC models can be used to drive an external
light emitting diode. CxB models have an integrated amber LED.

CxC models provide up to 24 mA of TTL level LED sink current
capability.

 Current limiting for the LED is provided on the electronics card. The
 anode may be tied to the +5V power source (provided on the unitized
 connector). The LED cathode is then connected to the device fault pin
 to complete the circuit.

Programmable pin 1 (option port pin 9)
--------------------------------------
This pin can be used by a manufacturer for whatever purposes it
desires within the specified definition, electrical characteristic
and the availability of microcode. This pin is completely controlled
by microcode.

This pin is not accessible externally on CxB models.

Programmable pin 2 (option port pin 10)
---------------------------------------
This pin is reserved and is not connected to any internal logic.

This pin is not accessible externally on CxB models.

Early power off warning or power fail (power port pin 11)
---------------------------------------------------------
The early power off warning input pin on CxC models can be used to
indicate to the drive that a power loss will occur by pulling this
signal above a 2.0 volt threshold. The input must provide a minimum
of 6 milliseconds warning before power falls below operating
specifications in order for the drive to stop its activities and
handle the fault.

This pin is not accessible on CxB models.

12V charge and 5V charge (power port pin 1 and 2)
-------------------------------------------------
These pins are longer than the others. They help to reduce current
spikes during hot plug. Each pin requires a resistor (not in the
drive) in series between the power source and the drive connector.
This allows for more controlled current draw as prior to other
voltage pins. It is up to the subsystem to determine the proper
resistance to add to these pins to meet the 10% voltage drop
limitations and the current draw limitation of the connector.

These pins are not accessible on CxB models.

Front jumper connector
----------------------
All models contain a jumper block that is reserved for IBM
engineering use only.

SSA unitized connector
----------------------
Electrical connections for CxC models are provided by a single
connector mounted on the rear of the drive. Connections are provided
for two SSA port, fault sensors and indicators, option customization
and power.

Install

IBM DFHC ULTRASTAR XP SS NOTES ON INSTALLATION

Notes on installation
=====================

Installation direction
----------------------

     horizontally                           vertically
   +-----------------+             +--+                       +--+
   |                 |             |  +-----+           +-----+  |
   |                 |             |  |     |           |     |  |
 +-+-----------------+-+           |  |     |           |     |  |
 +---------------------+           |  |     |           |     |  |
                                   |  |     |           |     |  |
                                   |  |     |           |     |  |
 +---------------------+           |  +-----+           +-----+  |
 +-+-----------------+-+           +--+                       +--+
   |                 |
   |                 |
   +-----------------+

The drive will operate in all axis (6 directions).

Carrier connector
-----------------
Electrical connections for CxB models are provided by a single 128
pin connector on the rear of the drive. Connections are provided for
two SSA ports, fault sensors and indicators, and power. The
receptacle used is a 4 x 32 female contact, BERG HPC connector, IBM
part number 99F9429.

Clearances
----------
A minimum of 2 mm should be given to the bottom surface except for a
10 mm diameter area around the bottom mounting holes. For proper
cooling it is suggested that a clearance of 6 mm be provided under
the drive and on top of the drive.

There should be 7 mm of clearance between drives that are mounted
with their top sides facing each other.

Mounting CxB
------------
The carrier is designed to be plugged into an auto-docking assembly.
The auto-docking assembly contains an electrical receptacle that
provides connections for DC power, SSA interface signals, and fault
sensing and reporting signals. The carrier design allows for
positive retention of the carrier in all axes when plugged into the
auto-docing assembly. In addition, the carrier retention provides a
force to bottom out the carrier auto-docking connector into the
auto-docking assembly and maintain a force of 5 pounds minimum, 40
pounds maximum.

The mating connector should contain two guide pins to align the
carrier receptacle during seating. These guide pins are BERG part
number 77693-014 (IBM part number 72G0343) or AMP equivalent part
number 1-532808-1 (IBM part number 19G6789). The guide pin length
should be 26.04mm while the thread depth depends upon the thickness
of the circuit board the connector is mounted to. The guide pins
should be tied to the docking assembly frame ground.

NOTE
The connector pins must be lubricated to insure seating of the
carrier into the auto-docking assembly. The type of lubricant
recommended is Stauffer CL-920 or equivalent.

The maximum allowable penetration of the mounting screws is 3.8 mm.

 The torque applied to the mounting screws must be 0.8 newton meters
   0.1 Newton meters.

Grounding requirements of the disk enclosure
---------------------------------------------
The disk enclosure is at power supply ground potential. It is
allowable for the user mounting scheme to common the disk enclosure
to frame ground potential or leave it isolated from frame ground.

The drive's mounting frame must be within 150 millivolts of the
drive's power supply ground. At no time should more than 35 milliamps
of current (0 to 100 MHz) be injected into the disk enclosure.

Features

IBM SSA

SSA
---
Serial Storage Architecture (SSA) is a powerful high-speed serial
interface designed to connect high-capacity data storage devices,
subsystems, servers and workstations. Designed with the future in
mind, SSA facilitates migration from current SCSI equipment and will
accommodate implementation of future configurations, including the
use of fiber-optic connections. IBM offers SSA interfaces on its
3.5-inch line of Ultrastar XP and Ultrastar 2XP high-performance
drives.

SSA reduces interface costs. No external drivers or receivers
required; these functions are embedded within a CMOS protocol chip.
Only four signal wires are required, compared to 68 for the closest
SCSI equivalent. SSA interface require no address switches and no
discrete terminators.

SSA architecture operates at two protocol levels. The lower level,
SSA-PH, defines the electrical characteristics, coding scheme and
method of information transmission. The upper level maps SCSI
commands into a form suitable for serial transmission. As a result,
devices now using SCSI-2 can be upgraded to SSA with minimal code
changes.

SSA offers superior performance over the interfaces commonly used
today. Each SSA link is full-duplex and frame multiplexed
simultaneously, resulting in data rates in the 20MB/sec range in each
direction, with total throughput of 80MB/sec at each node. As many
as 127 devices can be connected per loop, with "hot plugging"
supported.

The combination of low power, fewer components and fault isolation
makes SSA highly reliable. Each node performs extensive error
checkig, and if errors occur, SSA provides transparent frame
recovery. When SSA devices are configured in a loop, alternate paths
to each device ensure that there is no single point of failure.















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