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Article #254

FS: IBM 2.25 GB 7200 rpm SCSI drive - $250

#254
From: Dan Blumenfeld
Date: Sat, 29 Nov 1997 00:00
59 lines
2597 bytes

FOR SALE:  IBM 2.25 GB SCSI drive

This is a high-performance 2.25 GB, 7200 rpm, 3.5" half-height internal
SCSI-2 hard drive manufactured by IBM, model DFHS-S2F.  Recently pulled
from a server for an upgrade, in excellent condition, formatted, and
checked with Windows 95 Disk Scan.

$250 + ship.

- Dan


DFHS-S2F Features:
       Magneto resistive heads.
       PRML data channel.
       Spindle Synchronization.
       User configurable block sizes.
       512KB multi-segmented dual port data buffer.
       Drive supported SCSI bus terminator power.
       Industry standard mounting.
       Low command overhead.
       Read ahead caching.
       Write cache support.
       ECC on the fly.
       Predictive failure analysis.

Configuration:
  Interface                          SCSI-2 Narrow 50 pin
  Formated device capacity           2.25 GB
  Data heads                         8
  Disks                              4

Performance:
  Rotational speed                   7200  RPM
  Media transfer rate (avg)          12.07 MB/sec (instantaneous)
  Interface transfer rate (max)      20.0  MB/sec
  Latency average                    4.17  ms
  Seek time (typical)
    Single cylinder (read)           0.6  ms
    Average weighted (read)          7.8  ms
    Full stroke (read)               16.5 ms
  Spin up                            13.2 sec

Power:
  Idle                               10.8 Watts
  Seeking                            13.5 Watts
  +12V VDC start up                  1.5  Amps

Physical size:
  Height                             25.4  mm
  Width                              101.6 mm
  Depth                              146.0 mm
  Weight                             460   g


Further specifications can be found on IBM's storage products webpage at:
     http://www.storage.ibm.com/techsup/hddtech/dfhs/dfhstek.htm
Technical Details
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From: djb@coos.dartmouth.edu (Dan Blumenfeld)
Subject: FS: IBM 2.25 GB 7200 rpm SCSI drive - $250
Date: 1997/11/29
Message-ID: <65nvfi$pqc$1@dartvax.dartmouth.edu>
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Distribution: usa
Organization: Dartmouth Medical School, Dartmouth College, Hanover NH
Newsgroups: comp.sys.mac.hardware.storage,misc.forsale.computers.mac-specific.misc,biz.marketplace.computers.mac