Category : HD Utilities
Archive   : MAX_IDE.ZIP
Filename : 25252A.TXT

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MAXTOR 25252A 2.5-Inch IDE DRIVE
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KEY FEATURES:
* 12ms average seek * 128K on-board cache
* Low power consumption * >350,000 hour MTBF
* 1:1 interleave * Automatic actuator lock
* Dual drive Master/slave support * Zone density recording
* Rotary voice coil

SPECIFICATIONS:
Formatted (MegaBytes) ...................... 251.7 *5
Number of Disks: ........................... 3
Data Surfaces: ............................. 6
Data Heads: ................................ 6
Servo: ..................................... Embedded
Tracks per surface (user) .................. 1,418
Track Density (average) .................... 2,560 tpi
Bytes per Block: ........................... 512
Sectors per track (8 Zones) ................ 43-67
Seek times* (ms)
Track-to-track ........................... 2.5
Average .................................. 12**
Maximum .................................. 22
Average Latency (ms) ....................... 7.064
Rotational speed ........................... 4,247 rpm
Controller overhead (ms) ................... 1
Data transfer rate (Mbytes/sec)
To/from media ............................ 2.01-3.13
To/from buffer (AT) ...................... 9.0
To/from buffer (synchronous SCSI) ........ 7.5
To/from buffer (asynchronous SCSI) ....... 3.0
Start time - Power up (0-4,247 RPM)
Typical .................................. ó3.5 sec
Start time - Sleep mode .................... <1.5 sec
Start time - Power down .................... ó3 sec
Start/Stop cycles (Typical) ................ 50,000 min
Interleave ................................. 1:1
Buffer size ................................ 128K
Interface .................................. AT or SCSI
Recording method ........................... 1,7 RLL
Recording density (Kbpi) ................... 55.0 (Zone 1)
Flux density (Kfci) ........................ 41.3 (Zone 1)

POWER REQUIREMENTS
MODE +5VDCñ10% POWER
-------------------------------------
Spin-up ........ 1000mA (peak). 2.8W
Read/Write ..... 400mA ........ 2.0W
Idle ........... 320mA ........ 1.6W
Park ........... 180mA ........ 0.9W
Standby/Sleep .. 20mA ......... 0.1W

PHYSICAL
Height ................................. 0.67 in. (17.0 mm)
Width .................................. 4.00 in. (101.6 mm)
Depth .................................. 2.75 in. (69.84 mm)
Weight ................................. 0.419 lbs. (190 gm)

ENVIRONMENTAL
Temperature
Operating .............................. 5øC to 50øC
Thermal gradient ....................... 20øC/hour max
Non-operating, Storage
Low Temp ....................... -40øC Per MIL-STD-810E, Method 502.3
High Temp ............................ Per MIL-STD-810E, Method 501.3
Hot induced conditions
Humidity
Operating .............................. Per MIL-STD-810E, Method 507.3
Natural hig humidity, Cycle 3
Non-operating & storage ................ Per MIL-STD-810E, Method 507.3
Induced conditions, Cycle 5
Altitude (relative to sea level)
Operating .............................. -200 to 10,000 feet
Non-operating .......................... Per MIL-STD-810E, Method 500.3
low pressure procedure I-storage
test condition 2, transport air-
craft cargo compartment conditions
Shock & Vibration (typical)
Non-operating shock .................... 150 Gs, 3 ms & 11 ms half-sine pulse
Per MIL-STD-810E, Method 516.4
Procedure VI - Bench Handling
Operating shock ........................ 15 Gs, 3 ms & 11 ms half-sine pulse
(Without non-recoverable errors)
Non-operating vibration
Per MIL-STD-810E, Method 514.4, Basic transportation vertical axis
PSD profile (60 Min/Axis)(10-500 Hz)
Operating vibration
Swept sine (1 octave/minute)
5 - 20 Hz ........ 0.05" (double amplitude)
20 - 300 Hz ....... 1 G Peak amplitude
Random Vibration .. Per MIL-STD-810E, Method 514.4
Basic transportation vertical axis
PSD profile (10-500 Hz)
Acoustic Noise (typical)
30 dbA (1 meter in idle on-track mode) sound pressure average
3.40 bel A sound power (per ISO 7779)

RELIABILITY AND QUALITY
MTBF ....................................... >350,000 POH (Power On Hours) *1
AFR ........................................ ó0.7% (Annualized Failure Rate)*2
Component design life ...................... 5 years (minimum) *3
AOQL/DPM ................................... 1,500 DPM *4
Preventive Maintenance ..................... None
Data reliability ........................... <10 per 10 to the 13th bits read
(non-recoverable read data errors)

* Averages at nominal DC input voltages. Includes mechanical motion
and servo overhead. Excludes system, adapter, and interface firm-
ware overhead.
** The average of 10,000 random seek times (measured on independent.
test equipment) constitutes the average seek time specification.
*1 Annualized average applicable only to the time period after
installation to the end of the specified Component Design Life.
The assumed POH/Year is ó2,500 hours.
*2 Annualized average applicable only to the time period after final
installation to the end of the specified Component Design Life.
*3 The period of the before identified wear-out mechanisms will impact
the annual failure rate.
*4 Average defects per million rate is measured by our customers
through their final installation. Based on failures that are
verified as chargeable to Maxtor.
*5 Maxtor defines a megabyte as 1,000,000.

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Master/Slave ³ ³ ³ ³ ³
Only Drive in single drive system* ³ J ³ ³ ³ ³
Master in dual drive system ³ J ³ ³ ³ ³
Slave in dual drive system ³ O ³ ³ ³ ³
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Reserved for factory ³ ³ ³ ³ ³
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Factory operation ³ ³ ³ J ³ J ³
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Idle Mode Latch ³ ³ ³ ³ ³
Option Disabled ³ ³ O ³ ³ ³
Option Enabled* ³ ³ J ³ ³ ³
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*=Default J=Jumped O=Open

CMOS Configuration: Cyls Hds Write Landing Sec/Trk
PreComp Zone
240MB Capacity ---------------------------------
(251.7 Million Bytes) 569 16 0 0 54


25252A and 25252S are trademarks of Maxtor Corporation.
AT is a registered trademark of IBM Corporation.
Specifications subject to change without notice.
Copyright 1993 Maxtor Corporation.
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