🚀 go-pugleaf

This drive is a 1+ Gigabyte Wide Differential SCSI Drive.  It requires a 
differential type host adapter.  This means that It needs to be on a 
Single ended Termination chain.  The Adaptec 2944W will work, however the 
2940W will not.

    Yours for only $250 plus s/h or best offer


-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Here are the specs:

Table 1-2. HP C2247 Operating Specifications

        Interface       Industry Standard SCSI-2

        Controller:

        Overhead time   < 500 microseconds
        Buffer size     256 kbytes
        Buffer type     Dual-ported
        Sector size     180 - 744 Data Field Bytes
      Interleave        1:1
        
Seek Times (includes settling time)


        Track to Track Seek     2.5 milliseconds
        Head Switch Time        < 1 millisecond
        Average Random Seek
        Reads   10.2 milliseconds
        Writes  11.2 milliseconds
        Maximum Seek    22 milliseconds
        
Notes:

     Seek time is defined as the time from when the actuator begins to 
move until the head has settled over the target track. It does not 
include any controller overhead time or any initiator overhead time. The 
values above are derived from a representative sample of disk drives
measured under normal temperature and voltage conditions.


Track to track seek time is the mean value of all seek times measured 
when performing all possible single track seeks.

Average random seek time is the time to do all possible seeks divided by 
the number of seeks possible

Maximum seek time is the time it takes to seek 2051 physical cylinders.

Spin-up Time

>From Power-On to Ready for Access
Typical: 14 seconds

>From Power-On to SCSI Bus Selection
Typical: 3 seconds
Maximum: 5 seconds

Disk Rotating Speed 5400rpm +/- 0.5%
Rotational Latency (Average time) 5.56 milliseconds +/-0.5%

Internal Data Transfer Rates (Controller/Disk)

Burst. Rates (for single sector transfers):
Inner Zone to Outer Zone:3.1 to 5.3 Mbytes (24.8 to 42.4 Mbits) per second
Sustained Rates: (for continuous transfers: excludes controller overhead)
Inner Zone to Outer Zone 2.1 to 3.7 17.1 to 29.5 Mbits) per second


External Data Transfer Rate (Host/Controller)

        Wide Differential
        Asynchronous    5.0 Mbytes per second
        Svnclironous    up to 20.0 Mbytes per second

Recoverable Data Error Rate

Less than ten (10) errors in 10^13 bits transferred when the disk drive 
is operated within the specified environmental limits.

Note:     A recoverable data error occurs when a read or write operation 
successfully completes with the execution of a recovery algorithm. The 
recovery action is reported to the host with a Sense Key of 1. (Refer to 
the Request Sense command in Appendix A.) Mode pages must be in the 
factory default states.


          Unrecoverable Data Error Rate

Less than ten (10) errors in 10^15 bits transferred when the disk drive 
is operated within the specified environmental limits.

Note:     An unrecoverable data error occurs when a read or write 
operation does not sucessfully complete with the execution of a recovery 
algorithm. The unsuccessful operation is reported to the host with a 
Sense Key of 3. (Refer to the Request Sense command in Appendix A.) Mode
pages must be in the factory default states.


          Seek Error Rate

Less than ten (10) seek errors in 107 seeks when the drive is operated 
within the specified environmental limits.

Note:A seek error occurs when the drive does not successfully locate the 
desired cylinder and head.

Recording Density

  Bit Density:1968 bits per mm (49,987 bits per inch)
  Track Density:91 tracks per mm(2304 tracks per inch)

Coding System: 1,7 Run Length Limited (RLL) Code


Electromagnetic Emissions
        

Current Electromagnetic Compatibility (EMC) regulations do not speclfy 
or require testing at the component (standalone) level since EMC is 
highly dependent upon tile characteristics of the system in which the 
product is installed.


Although regulatory testing is not. required, these products have been 
characterized as individual components using Hewlett-Packard 
standardized tests.


Acoustical Noise: Typical values measured as average sound pressure at 
one meter per ISO 7779; converted to average sound power (in bels) per 
ISO 7779.



        Idling:
        A-Weighted Sound Pressure:      35 db(A)
        Sound Power:    4.6 bels
        Seeking:
        A-Weighted Sound Pressure:      37 db(A)
        Sound Power:    4.8 bels

Safety

This product will be evaluated as a component (incomplete in nature) to 
the following specifications. A complete test and evaluation program 
should be performed on the end use application.

      IEC     950, Ist Edition, Amendments 1 and 2
        UL      1950, Ist Edition
        CSA     C22.2 No. 950-M89
        EN      60950, 1988
        TUV     EN 60950, 1988; DIN VDE 0805/05.90
        DEMKO   EMKO-TUE (74-SEC) 203/91
  
  
  
  Physical Characteristics
  
        Unit Weight     1.0 kg (2.2 lbs)
        Shipping Weight (Single-Unit Package)   1.6 kg (3.5 lbs)
        Shipping Weight (Ten-Unit Package)      11.5 kg (25 lbs)
  
        Dimensions:
        Length  146.1 mm (5.75 in.)
        Width   101.6 mm (4.00 in.)
        Height  41.3 mm (1.63 in.)
  (Dimensions exclude front bezel. Additional information is provided in 
  Chapter 2.)
  
           Environmental Requirements
  
  
  The environmental requirements for proper operation of the HP 
  
  Table 1-4. HP C2247 Environmental Requirements
  
  
  Input Power
  
        Voltages        +5 V, +12 V
        Regulation      +/-5%
  
        (+/-10% tolerance allowed for +12V during start-up.)
  
        Ripple and Noise:
  
        +5 V    < 100 MVP-P
        +12 V   < 200 mvp-p
  
  Ambient Air Temperature
  
        Operating       5'C to 50'C (41'F to 122'F)
        Nonoperating    40'C to 650C (-40OF to 1490F)
  
  
  (Maximum rate of change shall not exceed 20'C (36'F) per hour.)
  
  Airflow Requirements
  
        Wide, Differential Drives       4 to 6 cfm
  
       
  Relative Humidity
  
  Operating: 8% to 80% with wet bulb limit of 28'C
  
  Nonoperating (storage and shipping:5%, to 90%, with wet bulb limit of 
  28'C
  (Excludes all conditions which can cause condensation in or on the disk 
  drive.)
  
  Altitude
  Operating   - 305 m (- 1,000 ft) to 3,048 m (10,000 ft) above sea level.
  Nonoperating  - 305 in (- 1,000 ft) to 15,240 m (50,000 ft) above sea 
  level.
  
  
  Tilt
  The disk drive will meet all performance specifications on any of the 
  major mounting axes.
  
  
  Shock
  
   Operating:
  
    Applied Acceleration (half sine)  3.0 g (peak), 11 milliseconds
       The drive meets recoverable and unrecoverable data error rate
       specifications (refer to Table 1-2) with no recoverable or 
       unrecoverable hardware faults. Mode pages must be in factory
       default state.
  
  
                                                                   I
  Applied Acceleration (half sine) 10.0g (peak), 11 milliseconds
  
  The drive meets unrecoverable data error rate specifications (refer to 
  Table 1-2) with no unrecoverable hardware faults. Mode pages must be in 
  factory default state.
  
  
  Nonoperating:
  
    Applied Acceleration (half sine)  50 g (peak), 11 milliseconds
   
   The drive meets recoverable and unrecoverable data error rate 
  specifications (refer to Table 1-2) with no recoverable or unrecoverable 
  hardware faults and no damage to the mechanism. Mode pages must be in 
  factory default state.
  
  
  Notes:
  
  A recoverable hardware fault occurs when the drive detects a hardware 
  error, such as a seek or track following error, and successfully 
  completes the operation with the execution of a recovery algorithm. The 
  recovery action is reported to the host with a Sense Key of 1. (Refer
  to the Request, Sense command in Appendix A.) Mode pages must be in tile 
  factory default states.
  
  An unrecoverable hardware fault occurs when the drive detects a hardware 
  error, such as a seek or track following error, and does not 
  successfully complete the operation with tile execution of a recovery
  algorithm. The unsuccessful operation is reported to the host with 
  a Sense Key of 4. (Refer to the Request, Sense command in Appendix A.) 
  Mode pages must be in the factory default, states.
  
  
  Swept Sine Vibration
  
  Operating:
  
  Applied Acceleration  0.25 g (peak), 5 to 500 Hz
  The drive meets recoverable and unrecoverable data error rate specifications 
  (refer to Table 1-2) with no recoverable or unrecoverable hardware faults. 
  Mode pages must be in factory default state.
  
  
  Applied Acceleration 0.5 g (peak), 5 to 500 Hz
  The drive meets unrecoverable data error rate specifications (refer to
  Table 1-2) with no unrecoverable hardware faults. Mode pages must be in 
  factory default state.
  
  
  Nonoperating:
  
  Applied Acceleration  2.0 g (peak), 5 to 500 Hz
  
  The drive meets recoverable and unrecoverable data error rate 
  specifications (refer to Table 1-2) with no recoverable or unrecoverable 
  hardware faults and no damage to the mechanism. Mode pages must be in 
  factory default state.