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IBM OEM Storage Products
Deskstar DALS-3540
IBM introduced a disk drive for the desktop personal computer marketplace. It was available
at the 540 MB capacity point with SCSI-2 FAST interface, the drive provided excellent
performance and improved reliability.
APPLICATIONS
Desktop personal computers
Low end workstations
Storage expansion applications
FEATURES
541 MB Formatted capacity (512 byte/sector)
10 MB/s data transfer speed
48.7 Mb/s (OD) media data rate
32.2 Mb/s (ID) media data rate
Average seek time 12 ms (read)
4500 RPM
64 KB segmented buffer
Read ahead caching with LFU (Least frequently used) segment update
Industry standard mounting
The drive can be mounted with any of its six surfaces facing down
Advanced ECC on the fly
Power saving modes
Robust design for EMC/RFI
MR (Magneto Resistive) head technology
No-ID sector format
MTBF 350,000 hours
BENEFITS
Generic popular storage capacity
Fast interface data rate
Excellent performance on long records
Fast access to data
Ease of installation
Improved data throughput
Reduced power consumption
Ideal for energy-efficient systems
Easy integration across multiple platforms
High area density, low component count
More data stored per track, increased sustained data transfer rate
Assured reliability
Pin 1
SCSI I/F Power
Connector Connector
Pin 2
CONNECTORS
Power
Connector
Back Side of Drive
SCSI I/F Logic
Connector Card
JP 12
Option Block
JP 1
Bottom of drive
Pin# 1 2 3 4
+5V GND GND +12V
The DC power connector is designed to mate with AMP part 1-480424-0 (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
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 2mm.
Disable Disable
Unit TI
Device ID Attention Negotiation
JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 JP9 JP10 JP11 JP12
1 3 5 7 9 11 13 15 17 19 21 23
2 4 6 8 10 12 14 16 18 20 22 24
Disable Terminator LED
Auto Connect Driver
The jumpers control SCSI Device ID, Auto Spin Up, Unit Attention, SCSI Terminator
Connection, Target Initiated Synchronous Negotiation and the LED Driver Output.
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
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
(shipping default)
If JP1,JP2,JP3 are On,On,On the SCSI ID is 7
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.
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.
6. Jumpers JP8, JP9, JP10 and JP11 are not used.
7. Jumper JP12 can be used to drive a LED for SCSI Busy. Pin 24 is +5V, and Pin 23 will drive
a load up to 8mA.
JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 JP9 JP10 JP11 JP12 Position:
1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 17-18 19-20 21-22 23-24 Pin:
OFF ON ON OFF OFF ON OFF OFF OFF OFF OFF
LED
} N/A
TI Sync Nego Enabled
SCSI Terminator ON
Unit Attention Enabled
Auto Spin Up Enabled
} SCSI Device ID = 6
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
Note*
The system is responsible to provide sufficient air movement to maintain surface temperature
below 60 C at the center of top cover of the drive.
Operating Shock
The hard disk drive meets the following criteria while operating in respective conditions described
below. The shock test consists of five shocks inputs in each axis and direction for total of 30.
There must be a delay between shock pulses, long enough to allow the drive to complete all
necessary error recovery procedure.
No errors:
5G, 11 ms half-sine shock pulse
No data loss, seek error or permanent damage:
10G 11 ms half-sine shock pulse
No data loss, or permanent damage:
15 G, 5 ms half-sine shock pulse
30 G, 4 ms half-sine shock pulse
Operating Vibration
Due to the complexity of this subject we recommend that users contact the IBM technical
Support Group representative to discuss how to perform the necessary measurements if they
believe this to be an area which requires evaluation.
DATA ORGANIZATION
Logical Layout DALS-3540
Number of Heads 2
Number of LBAs 1056768
Sector Size 512
Total Customer
Usable Data Bytes 541,065,216
DC POWER REQUIREMENTS
The following voltage specifications apply at the drive power connector. Damage to the drive
electronics may result if the power supply cable is connected or disconnected while power is being
applied to the drive (No hot plug/unplug is allowed). There are inductive loads in the drive which
could cause destructively high voltage spikes on the drive if the power connection is opened.
There is no special power on/off sequencing required.
Nominal Supply
Voltages +5 volts +12 volts
Power Supply Ripple
{mV}(0-10{Mhz}P-P) 100 max 150 max
Voltage Supply
Tolerance (incl. ripple) +/-5% +10%/-8%
Power Supply
Current
Start up (Peak) 0.51A 1.16A
Idle (average) 0.23A 0.12A
R/W (average) 0.57A 0.14A
Seek (average) 0.41A 0.27A
Standby 0.20 0.01A
During the drive start up and seeking, 12 volt ripple is generated by the drive (referred to as
dynamic loading). If several drives have their power daisy chained together then the power
supply ripple plus other drive's dynamic loading must remain within the regulation tolerance of
+10/-8%. A common supply with separate power leads to each drive is a more desirable method
of power distribution.
To prevent external electrical noise from interfering with the drive's performance, the drive must
be held by four screws in a user system frame which has no electrical level deference at the four
screws position, and has less than +/-300 millivolts peak to peak level deference to the drive
power connector ground.
Signal definition
The pin assignments of interface signals are listed as follows:
PIN Signal PIN Signal
01 Ground 02 -DB(0)
03 Ground 04 -DB(1)
05 Ground 06 -DB(2)
07 Ground 08 -DB(3)
09 Ground 10 -DB(4)
11 Ground 12 -DB(5)
13 Ground 14 -DB(6)
15 Ground 16 -DB(7)
17 Ground 18 -DB(P)
19 Ground 20 Ground
21 Ground 22 Ground
23 Ground 24 Ground
25 Open 26 TRM Power
27 Ground 28 Ground
29 Ground 30 Ground
31 Ground 32 -ATN
33 Ground 34 Ground
35 Ground 36 -BSY
37 Ground 38 ACK
39 Ground 40 -RST
41 Ground 42 -MSG
43 Ground 44 -SEL
45 Ground 46 -C/D
47 Ground 48 REQ
49 Ground 50 -I/O
SCSI CABLE
The disk drive uses single-ended drivers and receivers which will permit cable lengths of up to 6
meters (19.68 feet). For a single ended cable a 50 conductor flat cable or a 25 signal twisted
cable can be used with a maximum length of 6.0 meters, and a stub length not exceeding 0.1
meters.
SCSI BUS TERMINATOR
The file has an internal Active SCSI bus terminator, and can be controlled on/off with one jumper
block provided at the card edge. The user is responsible for properly terminating and powering
the SCSI bus in the system.
MODE SELECT OPTIONS
Certain parameters are alterable using the SCSI 'Mode Select' command. This allows certain drive
characteristics to be modified to optimize performance on a particular system. Refer to the
DALS-3XXXX Interface Specification for a detailed definition of Mode Select parameters. The
changeable parameters are:
Page 0
Vendor Unique Parameters
UQE- Untagged Queuing Enable (1)
DWD - Disable Write Disconnect (0)
UAI - Unit Attention Inhibit (0)
ASDPE - Additional Save Data Pointer Enable (0)
CMDAC - Command Activated (LED) (0)
RPFAE - Report Failure Analysis Error (0)
CPE - Concurrent Processing Enable (1)
TCC - Thermal Compensation (0)
DSN Disable Target Initiated Synchronous Negotiation (0)
FRDD Format Degraded (1)
DPSDP - Data Phase Save Data Pointer (0)
CAEN - Command Age Limiter Enable (1)
LITF - Idle Time Function (0)
ADC - Adaptive Cache Enable (1)
QEMC - Queue Error Management Control (0)
DRD - Disable Read Disconnect (1)
LED Not supported (0) Command Aging Limit (48)
DRRT - Disable Read Reassign Target (0)
DNR - Disable Nested Reassigns (1)
Page 1
Read-Write Error Recover Parameters
AWRE - Automatic Write Reallocation Enable (1)
ARRE - Automatic Read Reallocation Enable (1)
TB - Transfer Block (0)
PER - Post Error (0)
DTE Disable Transfer on Error (0)
DCR - Disable Correction (0)
Correction Span (0)
Read Retry Count (01h)
Write Retry Count (01h)
Page 2
Disconnect/Reconnect Parameters
Read buffer Full Ratio (00h)
Write Buffer Empty Ratio (00h)
Page 7
Verify Error Recovery Parameters
PER (0)
DCR (0)
Verify Retry Count (01h)
Page 8
Caching Parameters
WCE - Write Cache Enable (1)
RCD - Read Cache Disable (0)
MF Multiplication Factor (0)
Disable Pre-Fetch Transfer Length (0)
Minimum Pre-Fetch (0)
Maximum Pre-Fetch (0)
Maximum Pre-Fetch Ceiling (0)
Number of Cache Segments (4)
Page A
Control Mode Page Parameters
Queue Algorithm Modifier (0)
QErr- Queue Error (00h)
DQue - Disable Queing (0)
Page 0D
Power Condition
Standby (0)
Standby Timer (00h)
NOTE: (xx) default options at Shipment
Mechanical Data
Dimensions
Height 25.4 +/-0.4 mm
Width 101.6 +/-0.4 mm
Depth 146.0 +/-0.6 mm
Weight 450 g maximum
16
60
146
41.6
(6x) UNC 6-32 1 101.6
FRONT
(4X) UNC 6-322
Back Front
60.3 44.4
Mounting Orientation
The drive can be mounted in any axis (6 directions)
The maximum allowable penetration of the mounting screws is (1) 3.5 mm (2) 6 mm The
recommended mounting screw torque is 6 to 10 kgF.cm (0.6-1.0 Nm).
ELECTROMAGNETIC COMPATABILITY
The drive meets the following EMC requirements when installed in the user system and exercised
with a random accessing routine at maximum data rate: United States Federal Communication
Commission (FCC) Rules and Regulations Part 15, Subject J Computer Devices "Class B Limits".
European Economic Community (EEC) directive #76/889 related to the control of radio
frequency interference and the Verband Deutscher Elektrotechniker (VDE) requirements of
Germany (GOP).
AMP is a trademark of AMP Incorporated.
Molex is a trademark of Molex Incorporated.
DATA MATE is a trademeark of AMP Incorporated.
This data sheet is not a substitute for the full product specification, which should be used when
detailed information is required.
Product Description data represents IBM's design objectives and is provided for comparative
purposes; actual results may vary based on a variety of factors. This product data does not
constitute a warranty. Questions regarding IBM's warranty terms or methodology used to derive
this data should be referred to your IBM OEM representative. Data subject to change without
notice.
WARNING: This disk drive can be damaged by Electro-Static Discharge, please follow
recommended ESD procedures before unpacking or handling the drive. Ask your dealer for
details if you need assistance.
PACKAGING: The drive must be protected against Electro-Static Discharge especially when
being handled. The safest way to avoid damage is to put the drive in an anti static bag before
ESD wrist straps are removed.
Drives should only be shipped in approved containers, severe damage can be caused to the drive if
the packaging does not adequately protect against the shock levels induced when a box is
dropped. Consult your IBM marketing representative if you do not have an approved shipping
container.
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