Quantum FIREBALL PLUS AS 10.2 User Manual

Basic Principles of Operation
5-3 Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT
5.1.1
5.1.15.1.1
5.1.1 Base Casting Assembly
Base Casting AssemblyBase Casting Assembly
Base Casting Assembly
A single-piece, e-coated, aluminum-alloy base casting provides a mounting surface
for the drive mechanism and PCB. The base casting also acts as the flange for the
DC motor assembly. To provide a contamination-free environment for the HDA, a
gasket provides a seal between the base casting, and the metal cover that encloses
the drive mechanism.
5.1.2
5.1.25.1.2
5.1.2 DC Motor Assembly
DC Motor AssemblyDC Motor Assembly
DC Motor Assembly
Integral with the base casting, the DC motor assembly is a fixed-shaft, brushless DC
spindle motor that drives the counter-clockwise rotation of the disks.
5.1.3
5.1.35.1.3
5.1.3 Disk Stack Assemblies
Disk Stack AssembliesDisk Stack Assemblies
Disk Stack Assemblies
The disk stack assembly in the Quantum Fireball Plus AS hard disk drives consist
of disks secured by a disk clamp. The aluminum-alloy disks have a sputtered thin-
film magnetic coating.
A carbon overcoat lubricates the disk surface. This prevents head and media wear
due to head contact with the disk surface during head takeoff and landing. Head
contact with the disk surface occurs only in the landing zone outside of the data
area, when the disk is not rotating at full speed. The landing zone is located at the
inner diameter of the disk, beyond the last cylinder of the data area.
1. For user data, zone 15 is the innermost zone and zone 1 is the outermost zone.
Table 5-1
Table 5-1 Table 5-1
Table 5-1 Cylinder Contents
CYLINDER
CYLINDERCYLINDER
CYLINDER
CONTENTS
CONTENTSCONTENTS
CONTENTS
ZONE
ZONEZONE
ZONE
1
NUMBER
NUMBER NUMBER
NUMBER
OF TRACKS
OF TRACKSOF TRACKS
OF TRACKS
SECTORS
SECTORS SECTORS
SECTORS
PER TRACK
PER TRACKPER TRACK
PER TRACK
DATA RATE
DATA RATEDATA RATE
DATA RATE
System Data 0 65 345 302.0
1 2348 694 490.0
2 2342 690 486.7
3 2342 676 476.9
4 2342 666 466.7
5 2342 651 456.7
6 2342 636 446.7
7 2342 616 433.3
8 2342 598 420
9 2342 592 406.2
10 2342 551 387.7
11 2342 522 365.7
12 2342 493 344.0
13 2342 453 317.7
14 2342 419 292.5
15 2342 375 262.5

Quantum FIREBALL PLUS AS 10.2 Specifications

General

Brand	Quantum
Model	FIREBALL PLUS AS 10.2
Category	Storage
Language	English