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Software Vault: The Gold Collection
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Software Vault - The Gold Collection (American Databankers) (1993).ISO
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7245A.TXT
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1993-03-11
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10KB
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196 lines
===============================================================================
MAXTOR 7245A/AT IDE DRIVE
===============================================================================
KEY FEATURES:
* 15ms average seek * 64K on-board cache
* Low power consumption * Zone density recording
* 1:1 interleave * Dual drive master/slave support
* Rotary voice coil * Automatic actuator lock
* Single-sided surface mount PCBA
SPECIFICATIONS:
Formatted: ................................. 245,583,872 Bytes
Embedded Controller: ....................... AT
Actuator type: ............................. Voice Coil
Number of Disks: ........................... 2
Data Surfaces: ............................. 4
Data Heads: ................................ 4
Servo: ..................................... Embedded
Tracks per surface: ........................ 1,944
Track Density (average): ................... 2,340 tpi
Bytes per Block: ........................... 512
Sectors per track (5 Zones): ............... 48-72
PERFORMANCE (Average):
Seek times* (ms)
Track to track: ....................... 3
Average: .............................. 15 **
Maximum: .............................. 27
Average latency (ms) ....................... 8.45
Rotation speed ............................. 3,551 RPM
Controller overhead ........................ 1 ms
Data transfer rate (Mbytes per sec)
To/from media ......................... 2.83
To/from buffer (AT) ................... 9.0
Start time / power up (0-3,551 RPM)
Typical ............................... ≤6 sec
Stop time / power down
Typical ............................... ≤3 sec
Start/stop cycles .......................... 40,000 average
Interleave: ................................ 1:1
Buffer Size: ............................... 64K
Interface: ................................. AT
Recording Method: .......................... 1,7 RLL
Recording Density (Kbpi) ................... 42.6 maximum
Flux Density (Kfci) ........................ 31.9 maximum
POWER REQUIRMENTS (Average):
Mode +12VDC ±8% +5VDC ±5% Power/Duration
Spin Up 820mA 330mA <10ms
R/W 135mA 325mA 3.25 W
Idle 135mA 315mA 3.15 W
PHYSICAL:
Height: 1.00" (2.54 cm)
Length: 5.75" (14.61 cm)
Width: 4.00" (10.16 cm)
Weight: 1.2 lbs. (.57 kg)
ENVIRONMENTAL:
Temperature
Operating .............................. 5°C to 50°C
Non-operating .......................... Low temperature (-40°C) per
MIL-STD-810E, Method 502.3
High temperature per
MIL-STD-810E, Method 501.3
Hot induced conditions.
Thermal gradient ....................... 20°C per hour max
Humidity
Operating .............................. Per MIL-STD-810E, Method 507.3
Procedure I, Natural Cycle 3
Non-operating & storage ................ Per MIL-STD-810E, Method 507.3
Procedure IIb, Induced cycle 5
Altitude (relative to sea level)
Operating .............................. -200 to 10,000 feet
Non-operating .......................... Per MIL-STD-810E, Method 500.3
Low pressure (Altitude) procedure I,
Storage, test condition 2
RELIABILITY & MAINTENANCE
MTBF ....................................... >150,000 POH (Power On Hours) *1
AFR ........................................ ≤1.7% (Annualized Failure Rate)*2
Component design life ...................... 5 years (minimum) *3
Quality Acceptance Rate .................... 99.8% (2,000DPPM) *4
Preventive Maintenance ..................... None
Data reliability ........................... <10 per 10 to the 13th bits read
(hard read errors)
Shock & Vibration (average)
Shock measured a half-sine pulse. Vibration
measured at swept sine, 1 octave per minute.
Non-operating shock .................... 70 Gs, 11 ms
Operating shock ........................ 15 Gs, 11 ms
(w/o non-recoverable errors)
Non-operating vibration
Per MIL-STD-810E, Method 514.4, Basic transportation vertical axis
PSD profile, 10-500 Hz, 60 Min/Axis.
Operating, ramdom vibration
5 - 20 Hz ......................... 0.049" (double amplitude)
20 - 300 Hz ........................ 1.5G Peak amplitude
Acoustic Noise (typical)
Sound power ......................... 3.9 belA (per ISO 7779)
Sound pressure ...................... 33 dBA
* At nominal DC input voltages.
** 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.
assumed POH/year is ≤2,000 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.
==============================================================================
7245A JUMPER DESIGNATION
│J23│J22│J20│J16│
┌─────────────────────────────────────┼───┼───┼───┼───┤
│ SYNC Spindle Control │ │ │ │ │
│ Sync Spindle Disabled* │ O │ │ │ │
│ Sync Spindle Enabled │ J │ │ │ │
│ Sync Slave* │ │ O │ │ │
│ Sync Master │ │ J │ │ │
├─────────────────────────────────────┼───┼───┼───┼───┤
│ Master/Slave │ │ │ │ │
│ Only drive in single drive system* │ │ │ J │ │
│ Master in dual drive system │ │ │ J │ │
│ Slave in dual drive system │ │ │ O │ │
├─────────────────────────────────────┼───┼───┼───┼───┤
│ I/O Channel Ready │ │ │ │ │
│ Enabled │ │ │ │ J │
│ Disabled* │ │ │ │ O │
└─────────────────────────────────────┴───┴───┴───┴───┘
J=Jumpered O=Open *=Default
┌─────┐ ┌──────────────────┐ ┌──┐ ┌─────────────┐ ┌──┐ ┌─────────┐
│ └──┘ └─────┘ └──┘ └─────┘ └──┘ ├┐
│ ┌────┐ ┌─┴┴┐
│ ┼ ╓──────────────────────────────────────────>│::::│ ┤ │
│ ╔═══════╩════════╗ └────┘ ┤ │
│ ║ J24 J22 ║ ┼ ┌──┐ ┤ │
│ ║ ┌───┼───┼─┐ ║ │,,│ ┤ │
│ ║ │ * * * * │ ║ ╓────────────────────────────>│::│ ┤ │
│ ║ │ * * * * │ ║ ╔═══════╩═══════╗ │::│ ┤J1 │
│ ║ └─┼───┼───┘ ║ ║ ┌─────┐ ║ └──┘ ┤ │
│ ║ J25 J23 ║ ║ J20┼ ▀▀▀ │ ║ ┤ │
│ ╚════════════════╝ ║ │ * * ┼J19 ║ ┤ │
│ ║ J18┼ * * │ ║ ┼ ┤ │
│ ║ │ * * ┼J17 ║ ┤ │
│ ║ J16┼ * * │ ║ ┤ │
│ ┼ ║ └─────┘ ║ └──┬┘
│ ╚═══════════════╝ ┌───┴┐
│ ┼ 1 ╡ │
│ 2 ╡ │
│ 3 ╡ J3 │
│ ┌──┐ ┌─────┐ ┌──┐ ┌────┐ ┌──┐ 4 ╡ │
└────┘ └─────────────────┘ └───┘ └────────────────┘ └──┘ └─────┴────┘
CMOS Configuration:
Cyls Hds Write Landing Sec/Trk
PreComp Zone
---------------------------------
967 16 0 0 31
Yields: 245.6 Million Bytes (Approx. 234 MegaBytes)
Drive is low-level formatted with a 1:1 interleave at
the factory, with any defects retired to a dedicated
non-destructive zone.
Jumpers J17, J18, J24, & J25 factory reserved. Abnormal
operation may occur if reserved jumpers are altered.
Jumper J19 may be used to store the spare shunt if
drive is configured for slave mode.
7245A and 7245S are registered trademarks of Maxtor Corporation.
AT is a registered trademark of IBM Corporation.
Specifications subject to change without notice.
Copyright 1993 Maxtor Corporation.
==============================================================================