TOSHIBA AMERICA INFORMATION SYSTEMS
STORAGE DEVICE DIVISION
IRVINE, CALIFORNIA
MK2023GAS (HDD2187)
2.5-INCH HARD DISK DRIVE
USER MANUAL
Rev 02
11/2006
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INTRODUCTION – MK2023GAS (HDD2187)
General Features
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2.5" sized drive
Fluid Dynamic Bearing (FDB) Motor
1 Platter
20 Gigabytes*
9.5mm High
12ms Average Seek Time
ATA-2,3,4,5 Interface
Supports high transfer rates of 100 MB/sec
2MB Buffer
Rotational speed of 4,200rpm
MTTF 300,000 Hours
*Toshiba defines a megabyte (MB) as 1,000,000 bytes and a gigabyte (GB) as 1,000,000,000 bytes.
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SETUP – MK2023GAS (HDD2187)
Caution: Your Hard Disk Drive is a precision device and even a small drop onto any surface can
cause damage. Electronstatic discharge can also damage the drive. You should ground yourself
prior to handling the drive.
Master/Slave Settings
Your Toshiba Hard Disk Drive can be configured as either a "Master" or "Slave" unit. Master
configuration is used for all single drive applications, and master or slave configuration (only one of each
per port) is used for two drive applications. Use the information in the following table before setting drive
as Master or Slave.
Master configuration is obtained by setting jumpers A, B, C & D open (no jumper present). Slave
configuration is obtained by setting jumpers C-D. When B-D jumper is installed, the drive is configured
as cable select. If pin 28 = Low, the drive is "Master", if pin 28 - High, the drive is "Slave".
Figure 1.HDD Jumper Locations
JUMPER
No Jumper
C-D Jumper
B-D Jumper
B-D Jumper
A-B Jumper
A-C Jumper
P28
DRIVE
-
Master Drive
Slave Drive
Master Drive
Slave Drive
Slave Drive
Prohibit
-
LOW
HIGH
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-
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Installation Notes
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The drive should be mounted carefully on the surface of 0.1mm or less flatness to avoid excessive
distortion.
In order to prevent short-circuit under any circumstances, a space of 0.5mm or more should be
kept under the PCB.
Space should be kept around the drive to avoid any contact with other parts, which may occur
due to shock or vibration.
The temperature of the top cover and the base must always be kept under 60C to maintain the
required reliability.
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Be sure not to cover the breathing hole to keep the pressure inside the drive at a certain level
Do not apply any force to the top cover, except the screw areas on top cover. Maximum force to
the specified area is 2N.
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The drive contains several parts which may be easily damaged by ESD (Electric Static
Discharge). Avoid touching the interface connector pins and the surface of PCB. Be sure to use
ESD proof wrist strap when handling drive.
The four mounting screws should be tightened equally with 0.3N-m (3kgf-cm) torque. The depth
should be 3.0mm minimum and 3.5mm maximum.
Placing Hard Drive inside your Computer
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Determine mounting configuration (the drive can be mounted in either a horizontal or vertical
orientation)
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Configure drive for system application.
Configure the adapter board for the specific system application (if required).
Install adapter board into an unused PC/AT 16 bit slot (if required).
Install the I/F cable to the system's 44 pin connector port or adapter board. Ensure pin 1 is
oriented correctly, (pin 1 on the cable is usually identified by a red or blue strip.)
Set correct drive type in system CMOS
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Refer to applicable manuals for software installation instructions.
Important Note: Disconnect power from your computer system before beginning installation.
Figure 2.HDD Mounting Holes
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USING THE HARD DISK DRIVE – MK2023GAS (HDD2187)
Backing up Data Files
To avoid data loss, regularly back up the data files on the hard disk drive.
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TROUBLESHOOTING – MK2023GAS (HDD2187)
Problem
Solution
My system is not able to recognize all available capacity
on my Hard Disk Drive. What do I need to do to utilize
the complete hard drive?
There are some systems that are unable to recognize the
new larger Hard Drives on the market. 3rd party software
is available that breaks the "capacity barrier". Some
suggestions are EZ Drive by Micro House and Disk
Manager DiskGo by Ontrack. Check with your local
computer/software supplier for availability or contact the
software manufacturer.
How do I install my 2.5" Toshiba Hard Drive into my
desktop or tower system?
You will need a HDD mounting kit in order to install a
Toshiba 2.5" drive into your desktop or tower system.
Contact your local computer supplier for kit availability.
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SPECIFICATIONS –MK2023GAS (HDD2187)
General
Model
Interface
MK2023GAS (HDD2187)
ATA-2/3/4/5
Motor
Fluid Dynamic Bearing (FDB)
Functionality
Formatted Capacity
Rotational Speed
Avg. Rotational Latency
Spin-up Time
20.003GB*
4200rpm
7.14/ms
4sec (typical)
2MB
Buffer
Seek Time (Average)
Internal Transfer Rate
Host Transfer Rate
12
164.6 ~ 257.1 Mbits/sec (max)
100Mbytes/sec
*Toshiba defines a megabyte (MB) as 1,000,000 bytes and a gigabyte (GB) as 1,000,000,000 bytes.
Internal Drive Characteristics
Number of Disks
1
Number of Read/Write Heads
Track Density (TPI)
User Data Cylinders
Logical Cylinders
2
72k
34,040
16,383
16
Logical Heads
Logical Sectors/track
Bytes per Sector
63
512
Logical Blocks (LBA)
39,070,080
Reliability
Preventative maintenance
Non-recoverable read errors
None
1 error per 1013 bits read
Electrical
Voltage
5V 5%
Power Consumption
Start
Seek
4.7W typ
2.6W typ
Read/Write
Sleep
2.3W typ
0.1W typ
Energy Consumption Efficiency
0.035W/GB avg
Shock
Operating
Non-Operating
1,960m/s2 (200G)(2msec)
7,840m/s2 (800G)(1msec)
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Physical
Height
Width
Depth
Weight
0.37" (9.5mm)
2.75" (69.85mm)
3.94" (100mm)
3.31oz (94g) typ
Regulatory
The drive satisfies the following standards:
Underwriters Laboratories (UL)
1950
Canadian Standard Association (CSA) C22.2 No.220 No. 950
TUV Rheinland
EN 60 950
EMC - EN50081-1
EN55022: 1988 Class B
EN60555-2: 1987+ A1
EN60555-3: 77A (Co) 38
IEC 801-2: 1991
EMC - EN50082-1
EIC 801-3: 1994
IEC 801-4: 1988
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DRIVE CONNECTORS –MK2023GAS (HDD2187)
Figure 1.MK2023GAS HDD Rear View - Connectors
Interface Connector
Drive Side Connector
Yamaichi GAP050K11617 or equivalent
Recommended Host Side Connector
Board
Cable
Straight type: Berg 86455-044 86456-044 or equivalent
Berg 89361-044 or equivalent
Recommended Cable Characteristics
Standard diameter
Characteristics impedance
Max Length
0.32mm (28AWG)
100 - 132ohm
0.46mm (max)
35pF (max)
Capacitance
* cable is not included with drive
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Interface Pin Assignment
DRIVE INTERFACE SIGNALS
PIN
1
SIGNAL
RESET
DD 7
PIN
2
SIGNAL
GROUND
DD 8
3
4
5
DD 6
6
DD 9
7
DD 5
8
DD 10
9
DD 4
10
12
14
16
18
20
22
24
26
DD 11
11
13
15
17
19
21
23
25
DD 3
DD 12
DD 2
DD 13
DD 1
DD 14
DD 0
DD 15
GROUND
DMARQ
DIOW/STOP
KEY
GROUND
GROUND
GROUND
DIOR/
-DMARDY
HSTROBE
27
IORDY/
28
CSEL
-DMARDY/-
DSTROBE
29
31
33
35
37
39
41
43
DMACK
INTRQ
DA1
30
32
34
36
38
40
42
44
GROUND
IOCS16
PDIAG
DA0
DA 2
CS0
CS1
DASP
GROUND
+5V (MOTOR)
RESERVED
+5V (LOGIC)
GROUND
Note: Symbol () in front of signal indicates negative logic.
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