Phoenix International VL1-250-SC-DS, Техническая информация

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Scope
This chapter describes the Seagate ST973401LC disk drive in detail.
Introduction
The ST973401LC is a high performance 2.5" one half inch high 73.4 gigabyte (formatted) disk drive with a 4.7
millisecond average seek time that is designed to operate with a SCSI host adapter or equivalent. The drive
features low power requirements and high shock resistance, enabling operation in portable environments. The
drive uses the industry standard
Small Computer System Interface (SCSI-2).
Key Features
•
Low power requirements enabling operation in portable applications
•
High performance balanced low mass rotary voice coil actuator
•
High shock resistance
•
Dynamic spindle brake
•
8 Mbyte multisegmented, read look-ahead cache buffer
•
Automatic error correction and retries
•
Integrated SCSI controller
•
Selectable sector sizes from 512 to 528 bytes/sector in multiples of 2 bytes/sector
•
Embedded servo data rather than a separate servo data surface
Physical Configuration
Actuator Type: Balanced low mass rotary voice coil
Media Type: Thin Film
Recording Method: EPR4 16/17
Number of Disks: 2
Data Surfaces: 4
Data Heads: 4
Tracks: 102,104
Cylinders: 51,052
Bytes per Block: 512-528 variable, 512 default
Sectors per Track: 703 at 512 bytes/sector
Formatted Capacity: 73.4 Gbytes
Drive Interface: SCSI Ultra320
Drive Performance
Average Latency: 3.00 ms
Average Access:
Read
4.7 ms
Write 5.1 ms
Single Track Seek:
Read
0.65 ms
Write 0.95 ms
Max Full Seek
Read
807 ms
Write 9.1 ms
Rotation Speed: 10,009
Internal Transfer Rate: 506 to 753 mbits/sec (variable with zone)
External Transfer Rate: 5 - 80 Mbyte/sec (synchronous)
Cache Buffer Size: 8 Mbyte
ST973401LC Hard Disk Drive Details 4-3