Hitachi DPES-30540, DPES-30810, DPES-31080 Reference Guide
IBM OEM Storage Products
DPES-30540, DPES-30810, DPES-31080
IBM OEM has introduced a new range of disk drives for the desktop personal computer
marketplace. Available in three popular capacity points with SCSI-2 FAST interface, the
drives provide excellent performance and improved reliability.
APPLICATIONS
Desktop personal computers
Low end file servers
Low end workstations
FEATURES
540, 810 and 1080 MB formatted capacities
(512 byte/sector)
10 MB/s data transfer speed
55.1 Mb/s (OD) media data rate
39.8 Mb/s (ID) media data rate
No sector ID format
Average seek time 10.5 ms (Read)
5400 RPM
448 KB sector buffer with adaptive segment length
Read ahead caching with LRU segment update
Industry standard mounting
The drive can be counted with any of its six surfaces facing down
Enhanced ECC implementation
Power saving modes
Robust design for EMC/FRI
MR (Magneto Resistive) head technology
BENEFITS--
Generic range of popular storage capacity
Fast interface data rate
Excellent performance on long records
Fast access to data
Fast data retrieval in single and multi-tasking applications
Ease of installation
Improved data throughput
Reduced power consumption
Easy integration across multiple platforms
High area density, low component count
Assured reliability
CONNECTORS
The DC power connector is designed to mate with AMP part 1-480424 (using AMP pins P/N
350078-4). Equivalent connectors may be used. Pin assignments are shown below, as
viewed from the end of the drive.
SCSI SIGNAL CONNECTOR
Pin 1
Pin 2
SCSI I/F
Connector
Power
Connector
JP7
JP1
Option Block
Back Side of Drive
Logic Card
Power
Connector
SCSI I/F
Connector
Pin# 1 2 3 4
+5V GND GND +12V
The SCSI Signal Connector is a 50 pin connector meeting the ANSI SCSI specification
Note: It is intended that the hard disk drive should only be in electrical contact with the
chassis of the PC at a designated set of mounting holes. Other electrical contact may degrade
error rate performance. As a result of this it is recommended that there should be no metal
contact to the hard disk drive except at the mounting holes or the side rails into which the
mounting holes are tapped.
OPTION BLOCK
Jumper Setting
Jumper position and function are as shown below. Pin pitch is 2 mm.
The jumpers control SCSI Device ID, Auto Spin Up, Unit Attention, SCSI Terminator
Connection, and Target Initiated Synchronous Negotiation.
Notes:
1. The jumper position of JP1, 2, and 3 define SCSI ID of the drive If JP1,JP2,JP3 are
Off,Off,Off the SCSI ID is 0 (shipping default) If JP1,JP2,JP3 are On,Off,Off the SCSI
ID is 1 If JP1,JP2,JP3 are Off,On,Off the SCSI ID is 2 If JP1,JP2,JP3 are On,On,Off the
SCSI ID is 3 If JP1,JP2,JP3 are Off,Off,On the SCSI ID is 4 If JP1,JP2,JP3 are
On,Off,On the SCSI ID is 5 If JP1,JP2,JP3 are Off,On,On the SCSI ID is 6 (set at
shipping) If JP1,JP2,JP3 are On,On,On the SCSI ID is 7
1
2
JP1
3
4
JP2
5
6
JP3
7
8
JP4
9
10
JP5
11
JP6
13
14
JP7
12
Device ID
Disable
Unit
Attention
Disable
TI
Negotiation
Disable
Auto
Spin-up
Enable
Terminator
2. If JP4 is Off, the drive will spin up automatically after power on reset. If JP4 is On, the
drive will not spin up unless the host system issues a start command to the drive with the
start bit set to one.
3. If JP5 is On, Unit Attention after power on reset or SCSI bus reset is disabled.
4. If JP6 is On, the internal SCSI active terminator works.
5. If JP7 is On, Target Initiated Synchronous Negotiation is disabled, and then the Initiator is
required to start a negotiation handshake if Synchronous SCSI transfers are desired.
DEFAULT SETTING
The default jumper setting at shipment is as follows.
OPERATING ENVIRONMENT
Operating Conditions
Temperature 5 to 55 degrees C*
Relative Humidity 8 to 90% non-condensing
Maximum Wet Bulb
Temperature 29.4 degrees C non-condensing
Maximum Temperature
Gradient 15 C/Hour
Altitude -300 to 3048m
Non-Operating Conditions
Temperature -40 to 65 degrees C
Relative Humidity 5 to 95% non-condensing
Maximum Wet Bulb
Temperature 35 degrees C non-condensing
Maximum Temperature
Gradient 15 C/Hour
Altitude -300 to 12,000m
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